Wyoming hot springs
335 springs, hottest at the source is Black Warrior Group, Shelf Spring at 205°F. 294 are on public land.
Wyoming looks like a hot springs superpower on paper: 342 records in this directory, more than Idaho. The catch is that the large majority are inside Yellowstone National Park, where soaking in hot springs is prohibited outright, and where the famous names in this list (Grand Prismatic Spring, Morning Glory Pool, Steamboat Springs at Norris, Mammoth Hot Springs) are for walking past on a boardwalk. Strip those out and Wyoming has a short, excellent list of places to soak, anchored by a free state bathhouse in Thermopolis.
Yellowstone: look, do not soak
The park’s rule is simple and enforced: hot springs are off limits for bathing, because they are often at boiling point and because the thermal environments are fragile. The two historical exceptions are both closed as of this writing. Boiling River, where hot water met the Gardner River near Mammoth, was wrecked by the June 2022 floods and the park says swimming there is not possible. The Firehole Swim Area south of Madison Junction is listed as closed and in normal years only opens in mid-summer during posted hours. All thermal water in the park can carry organisms that cause illness. If you want to soak near Yellowstone, do it outside the gates: Montana’s Paradise Valley to the north, or Wyoming’s own sites below.
Where you can soak
Thermopolis and Hot Springs State Park. The Big Spring at Thermopolis pours more than 1.8 million gallons a day over the terraces above the Bighorn River at a constant 128°F. When the Eastern Shoshone and Northern Arapaho sold the springs to the federal government in 1896, Chief Washakie’s condition was that the water would always be free to the public, and the State Bath House still delivers on that: it is a free public facility with water held at 104°F for soaking. Two commercial plunges stand next door with slides and larger pools, and the park has a suspension footbridge over the river, a bison herd that staff feed on winter mornings, and the Thermopolis Hot Springs source that this directory records at 133°F. It is open year-round and is the best family soak in the state.
Jackson Hole and the Hoback. Granite Hot Springs sits at the end of Granite Creek Road about 34 miles south of Jackson on the Bridger-Teton National Forest. It is a developed concrete pool run under Forest Service oversight with a cash day-use fee, open roughly late May through October by car and then from early December into March by snowmobile, dogsled, ski or fat bike only. Granite Falls Hot Springs is the primitive seep below the falls just down the creek. Inside Grand Teton National Park, Kelly Warm Springs is a shallow, lukewarm pond that tested positive for Naegleria fowleri in 2016; the park’s advice is to keep water out of your nose, and most locals no longer get in.
Saratoga and the North Platte. Hobo Hot Pool in the town of Saratoga is free, open 24 hours a day and maintained for the public, with the main pool at roughly 101°F to 110°F and the “Lobster Pot” end around 120°F. Rock-lined seeps behind it trap hot runoff along the North Platte River so you can alternate between the pool and the river. The Saratoga Hot Springs entry in this directory, at 129°F, is the source. The town also has a resort with its own pools.
Elsewhere. The directory also records Alcova Hot Springs near Casper (129°F), Auburn Hot Springs in Star Valley near the Idaho line (144°F) and Kendall Warm Spring in the upper Green River country, but none of these is a developed public soak, and the two hotter ones are not safe to enter at the source. Check ownership and current conditions before visiting any of them.
When to go
Thermopolis and Saratoga are year-round, and winter is their best season: dry cold air, steam off the water, and no crowds. Granite is a two-season site with a spring shutdown while the road thaws; the winter snowmobile approach from the Granite Creek parking area is a day out in itself. Check the park’s road status before a winter trip to Yellowstone’s thermal basins; most interior roads are closed to cars for the winter.
Etiquette and safety
- In Yellowstone, stay on the boardwalks and never touch hydrothermal water. The park’s own warning is blunt: it can scald you.
- At free public pools, the courtesy is short soaks when others are waiting, no glass, no soap and no alcohol. Hobo Pool has no attendant and depends on users keeping it clean.
- Keep your head above water in warm, still ponds such as Kelly. Wyoming is not immune to amoeba.
- Granite is cash only and remote. Carry your own water, and in winter plan for the trip to take much longer than the mileage suggests.
- Watch for wildlife. Hot Springs State Park has bison on the loose; view them from your vehicle.
Practical logistics
Thermopolis has motels and campgrounds and sits between Cody and Casper, so it fits a loop through the Bighorn Basin. Jackson has everything but is expensive; Pinedale is the cheaper base for the Hoback side. Saratoga, south of Interstate 80 in Carbon County, makes a good overnight between the Front Range and the parks. For Yellowstone, book lodging months ahead and soak on the Montana side at Gardiner or Chico.
Map
Springs by nearest town
Alcova
- Alcova Hot Springs
near Alcova / 129°F (54°C) / Unknown
Alcova Hot Springs is a geothermal spring in Wyoming (near Alcova, Natrona County) with a recorded surface temperature of 129°F (54°C).
Jackson
- Granite Falls Hot Springs
near Jackson / 112°F (45°C) / Public land
Granite Falls Hot Springs is a natural hot spring on Granite Creek near Granite Creek Falls in the Bridger-Teton National Forest, close to the fee-operated Granite Hot Springs Pool at the end of Granite Creek Road.
- Granite Hot Springs
near Jackson / 106°F (41°C) / Public land
Granite Hot Springs is a hot spring located in Sublette County, Wyoming, 30 miles (48 km) southeast of Jackson. It is maintained by the United States Forest Service.
Saratoga
- Saratoga Hot Springs
near Saratoga / 129°F (54°C) / Public land
Saratoga's Hobo Hot Pool, in the town's City Park on Walnut Street, is a free public hot pool open 24 hours a day with water from 101 to 110 degrees F and a 120 degree section called the Lobster Pot; restrooms and changing facilities are on site.
Thermopolis
- State Bath House
near Thermopolis / Unknown
State Bath House is a geothermal spring in Wyoming (near Thermopolis).
- Thermopolis Hot Springs
near Thermopolis / 133°F (56°C) / Public land
The Thermopolis hot springs flow over colorful terraces along the Big Horn River in Hot Springs State Park, where more than 1.8 million gallons a day emerge at a constant 128 degrees F. The park's State Bath House is a free public facility with the water held at 104 degrees, open as part of an 1896 treaty with the Shoshone and Arapaho tribes.
Other locations
- 5 Sisters
Public land
5 Sisters is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Abercrombie Warm Springs
Teton County / 81°F (27°C) / Unknown
Abercrombie Warm Springs is a geothermal spring in Wyoming (Teton County) with a recorded surface temperature of 81°F (27°C).
- Abyss Pool
Teton County / Public land
Abyss Pool is a hot spring in the West Thumb Geyser Basin of Yellowstone National Park in the United States.
- After Shock
Public land
After Shock is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Amphitheater Springs
196°F (91°C) / Public land
Amphitheater Springs is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Apollinaris Spring
Public land
Listed by NCEI as a thermal spring with a hot maximum surface temperature (no measured value recorded).
- Artemisia
Public land
Artemisia is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Artists' Paintpots
199°F (93°C) / Public land
Artists' Paintpots is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Astoria Mineral Hot Springs
99°F (37°C) / Unknown
Astoria Mineral Hot Springs is a geothermal spring in Wyoming with a recorded surface temperature of 99°F (37°C).
- Astoria Minerial Hot Springs
Teton County / Unknown
Astoria Minerial Hot Springs is a geothermal spring in Wyoming (Teton County).
- Auburn Hot Springs
144°F (62°C) / Unknown
Auburn Hot Springs is a geothermal spring in Wyoming with a recorded surface temperature of 144°F (62°C).
- Avoca
Public land
Avoca is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Avoca Spring
Teton County / Public land
Avoca Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Azure Spring
Public land
Azure Spring is a hot spring in the Lower Geyser Basin of Yellowstone National Park in the United States. The water temperature in the spring is 79 °C (174 °F).
- Basin Spring
Public land
Basin Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Beach Springs
Public land
Listed by NCEI as a thermal spring with a hot maximum surface temperature (no measured value recorded).
- Beauty Pool
Teton County / Public land
Beauty Pool is a hot spring in the Upper Geyser Basin of Yellowstone National Park in the United States. It is connected to the nearby Chromatic Spring.
- Bechler River Hot Springs
Teton County / Public land
Bechler River Hot Springs is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Belgian Pool
Public land
Belgian Pool is a hot spring in the Upper Geyser Basin of Yellowstone National Park, Wyoming. Originally named Oyster Spring, it was renamed after a visitor from Belgium fell into it in 1929 with fatal results.
- Beryl Spring
198°F (92°C) / Public land
Beryl Spring is a hot spring in the Gibbon Geyser Basin of Yellowstone National Park in the United States. It is a large superheated pool, and boils up to a height of 4 feet.
- Big Alcove Spring
Public land
Big Alcove Spring is a hot spring in Norris Geyser Basin, Yellowstone National Park in the United States. In 1996 the water temperature was 92.4 °C (198.3 °F).
- Bijah Springs
198°F (92°C) / Public land
Bijah Springs is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Black Diamond Pool
Public land
Black Diamond Pool is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Black Opal Pool
Public land
Black Opal Pool is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Black Opal Spring
Teton County / Public land
Black Opal Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Black Pool
Teton County / Public land
Black Pool is a hot spring in the West Thumb Geyser Basin of Yellowstone National Park in the United States. The pool was cool enough up until 1991 for dark orange-brown cyanobacteria to grow throughout the pool.
- Black Sand Pool
Teton County / Public land
Black Sand Pool is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Black Warrior Group, Shelf Spring
205°F (96°C) / Public land
Black Warrior Group, Shelf Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Blue Funnel Pool
Public land
Blue Funnel Pool is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Blue Funnel Spring
Teton County / Public land
Blue Funnel Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Blue Star Spring
Teton County / Public land
Blue Star Spring is a hot spring in the Upper Geyser Basin of Yellowstone National Park in the United States. It is named for its distinctive star shape.
- Bluebell Pool
Teton County / Public land
Bluebell Pool is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Bluebell Spring
Public land
Bluebell Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Boiling Hole
Public land
https://www.usgs.gov/observatories/yvo/news/oops-it-did-it-again-another-small-hydrothermal-explosion-biscuit-basin
- Bonita Pool
Public land
Bonita Pool is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Bottomless Pit
Public land
Bottomless Pit is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Boundary Creek Hot Springs
Teton County / 181°F (83°C) / Public land
Boundary Creek Hot Springs is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Boyles Hill Springs
86°F (30°C) / Unknown
Boyles Hill Springs is a geothermal spring in Wyoming with a recorded surface temperature of 86°F (30°C).
- Brick
Public land
Brick is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Brilliant Pool
Teton County / Public land
Brilliant Pool is a hot spring in the Upper Geyser Basin of Yellowstone National Park in the United States. Brilliant Pool is part of the Daisy Group and is interconnected with the Daisy and Splendid Geysers.
- Broken Egg Spring
Public land
Broken Egg Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Bronze Spring
Teton County / Public land
Bronze Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Buffalo Bill Reservoir Springs
Unknown
Listed by NCEI as a thermal spring with a warm maximum surface temperature (no measured value recorded).
- Buffalo Bill Reservoir Springs
Unknown
Listed by NCEI as a thermal spring with a warm maximum surface temperature (no measured value recorded).
- Buffalo Bill Reservoir Springs
Unknown
Listed by NCEI as a thermal spring with a warm maximum surface temperature (no measured value recorded).
- Buffalo Pool
Public land
Buffalo Pool is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Butte Springs
187°F (86°C) / Public land
Butte Springs is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Calcite Springs
Park County / 201°F (94°C) / Public land
Calcite Springs is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Calida
Public land
Calida is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Calthos Spring
Public land
Calthos Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Cascade Group
Teton County / Public land
group of hot springs in Teton County, Wyoming, United States of America
- Cauliflower
Public land
Cauliflower is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Celestine Pool
Public land
Celestine Pool is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Chimney Cone
Teton County / Public land
Chimney Cone is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Chinese Spring
Teton County / Public land
Chinese Spring (formerly called Chinaman Spring) is a hot spring in the Upper Geyser Basin in Yellowstone National Park, Teton County, Wyoming, in the United States. The spring was named Chinaman Spring until 1990 when it was changed to the current less offensive name.
- Chocolate Pots
124°F (51°C) / Public land
Chocolate Pots is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Chromatic Spring
Public land
Chromatic Spring is a hot spring in the Upper Geyser Basin of Yellowstone National Park in the United States. It is connected to the nearby Beauty Pool.
- Churning Caldron
Public land
Churning Caldron is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Cinnamon Spouter
Teton County / Public land
Cinnamon Spouter is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Circle Pool
Public land
Circle Pool is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Cistern Spring
Park County / 199°F (93°C) / Public land
Cistern Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Coffee Pot Hot Springs
Park County / 196°F (91°C) / Public land
Coffee Pot Hot Springs is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Collapsing Pool
Teton County / Public land
Collapsing Pool is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Colter's Hell
Park County / Unknown
Colter's Hell is an area of fumaroles and hot springs on the Shoshone River near Cody in the U.S. state of Wyoming. The thermal area covers about one square mile (2.6 km2) at the mouth of the Shoshone's canyon.
- Columbia Spring
Teton County / Public land
Columbia Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Copper Kettle
Teton County / Public land
Copper Kettle is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Crawfish Creek Hot Springs
Teton County / Public land
Crawfish Creek Hot Springs is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Crawfish Creek Hot Springs
Teton County / Public land
Crawfish Creek Hot Springs is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Crested Pool
Teton County / Public land
Crested Pool is a hot spring in the Upper Geyser Basin in Yellowstone National Park. The spring is 42 feet (12.8 m) deep.
- Cucumber Spring
Public land
Cucumber Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Culvert Geyser
Public land
Culvert Geyser is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Daisy Group
Teton County / Public land
group of hot springs in Teton County, Wyoming, United States of America
- Dart
Public land
Dart is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- De Maris Springs
97°F (36°C) / Unknown
De Maris Springs is a geothermal spring in Wyoming with a recorded surface temperature of 97°F (36°C).
- Deep Blue
Public land
Deep Blue is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Demon's Cave
Public land
Demon's Cave is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Dome
Public land
Dome is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Doublet Pool
Teton County / Public land
Doublet Pool is a hot spring in the Upper Geyser Basin of Yellowstone National Park, Wyoming. Doublet Pool is 8 feet (2.4 m) deep and its temperature is approximately 194.4 °F (90.2 °C).
- Douglas Hot Springs
Converse County / 86°F (30°C) / Unknown
Douglas Hot Springs is a geothermal spring in Wyoming (Converse County) with a recorded surface temperature of 86°F (30°C).
- Dragon Spring
Public land
Dragon Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Ear Spring
Teton County / Public land
Ear Spring is a hot spring in the Upper Geyser Basin of Yellowstone National Park in the United States. Located close to Old Faithful, on rare occasions Ear Spring will erupt as a geyser, and can shoot rocks and debris as well as water more than 25 feet (7.6 m) for a few minutes.
- East Chinaman Spring
Teton County / Public land
East Chinaman Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- East Mustard Spring
Public land
East Mustard Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- East Purple
Public land
East Purple is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- East Round
Public land
East Round is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Ebro Springs
136°F (58°C) / Public land
Ebro Springs is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Echinus Geyser
185°F (85°C) / Public land
Echinus Geyser is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Egeria
Public land
Egeria is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Emerald Pool
Teton County / Public land
Emerald Pool is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Emerald Spring
Public land
Emerald Spring is a hot spring located in Norris Geyser Basin of Yellowstone National Park.
- Ephedra Pool
Public land
Ephedra Pool is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Ephedra Spring
Teton County / Public land
Ephedra Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Excelsior Geyser
Public land
Excelsior Geyser is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Excelsior Geyser Crater
199°F (93°C) / Public land
Excelsior Geyser Crater is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Fairy Springs
201°F (94°C) / Public land
Fairy Springs is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Firehole Spring
Public land
Firehole Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Fissure Spring
Public land
Fissure Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Five Sisters Springs
192°F (89°C) / Public land
Five Sisters Springs is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Flake
Public land
Flake is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Flat Cone Spring, Steep Cone
205°F (96°C) / Public land
Flat Cone Spring, Steep Cone is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Flood Group
203°F (95°C) / Public land
Flood Group is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Forest Springs
Public land
Listed by NCEI as a thermal spring with a hot maximum surface temperature (no measured value recorded).
- Fountain Group
Teton County / 201°F (94°C) / Public land
group of hot springs in Teton County, Wyoming, United States of America
- Fountain of Youth
Unknown
Fountain of Youth is a geothermal spring in Wyoming.
- Fountain Paint Pot
136°F (58°C) / Public land
Fountain Paint Pot is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Frying Pan Bowl
Public land
Frying Pan Bowl is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Frying Pan Spring
Public land
Frying Pan Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Funnel Spring
Public land
Funnel Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Gas Vent
Public land
Listed by NCEI as a thermal spring with a hot maximum surface temperature (no measured value recorded).
- Gas Vent
Public land
Listed by NCEI as a thermal spring with a hot maximum surface temperature (no measured value recorded).
- Gas Vent
Public land
Listed by NCEI as a thermal spring with a hot maximum surface temperature (no measured value recorded).
- Gas Vent East of Mary Lake
Public land
Listed by NCEI as a thermal spring with a hot maximum surface temperature (no measured value recorded).
- Gas Vents
Public land
Listed by NCEI as a thermal spring with a hot maximum surface temperature (no measured value recorded).
- Gas Vents at Horseshoe Hill
Public land
Listed by NCEI as a thermal spring with a hot maximum surface temperature (no measured value recorded).
- Gas Vents Southeast of Mary Lake
Public land
Listed by NCEI as a thermal spring with a hot maximum surface temperature (no measured value recorded).
- Gem Pool
Teton County / Public land
Gem Pool is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Gentian Pool
Public land
Gentian Pool is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Geyser
84°F (29°C) / Unknown
Geyser is a geothermal spring in Wyoming with a recorded surface temperature of 84°F (29°C).
- Geyser Springs Group
201°F (94°C) / Public land
Geyser Springs Group is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Giantess
Public land
Giantess is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Gibbon Hill Geyser
199°F (93°C) / Public land
Gibbon Hill Geyser is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Grand Group
Teton County / Public land
group of hot springs in Teton County, Wyoming, United States of America
- Grand Prismatic Spring
Public land
The Grand Prismatic Spring is the largest hot spring in the Yellowstone National Park, and the third largest in the world, after Frying Pan Lake in New Zealand and Boiling Lake in Dominica. It is located in the Midway Geyser Basin.
- Granite Hot Springs Swimming Pool
Public land
Granite Hot Springs Swimming Pool is a geothermal spring in Wyoming.
- Great Fountain
Public land
Great Fountain is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Green Spring
Teton County / Public land
Green Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Green Star Spring
Public land
Green Star Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Grizzly Fumarole
Public land
Grizzly Fumarole is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Highland Hot Springs
Park County / Public land
Listed by NCEI as a thermal spring with a hot maximum surface temperature (no measured value recorded).
- Hillside
Public land
Hillside is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Horse Creek Springs
75°F (24°C) / Unknown
Horse Creek Springs is a geothermal spring in Wyoming with a recorded surface temperature of 75°F (24°C).
- Horseshoe Spring
187°F (86°C) / Public land
Horseshoe Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Hot Lake
Public land
Hot Lake is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Hot River
136°F (58°C) / Public land
Hot River, better known as the Boiling River, is where hot spring water from Mammoth Hot Springs enters the Gardner River near the North Entrance of Yellowstone National Park. It was once the park's best-known legal soaking spot, but the National Park Service reports that swimming there is not currently possible because of the impacts of the 2022 floods.
- Hot Spring
Public land
Listed by NCEI as a thermal spring with a hot maximum surface temperature (no measured value recorded).
- Hot Spring
Public land
Listed by NCEI as a thermal spring with a hot maximum surface temperature (no measured value recorded).
- Hot Spring
Teton County / Unknown
Hot Spring is a geothermal spring in Wyoming (Teton County).
- Hot Spring
Fremont County / Unknown
Hot Spring is a geothermal spring in Wyoming (Fremont County).
- Hot Spring Basin Group
Park County / 198°F (92°C) / Public land
Hot Spring Basin Group is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Hot Spring on Moss Creek
115°F (46°C) / Public land
Hot Spring on Moss Creek is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Hot Springs
Public land
Listed by NCEI as a thermal spring with a hot maximum surface temperature (no measured value recorded).
- Hot Springs
Public land
Listed by NCEI as a thermal spring with a hot maximum surface temperature (no measured value recorded).
- Hot Springs
Public land
Listed by NCEI as a thermal spring with a hot maximum surface temperature (no measured value recorded).
- Hot Springs
Public land
Listed by NCEI as a thermal spring with a warm maximum surface temperature (no measured value recorded).
- Hot Springs
Public land
Listed by NCEI as a thermal spring with a hot maximum surface temperature (no measured value recorded).
- Hot Springs
Public land
Listed by NCEI as a thermal spring with a warm maximum surface temperature (no measured value recorded).
- Hot Springs
Public land
Listed by NCEI as a thermal spring with a hot maximum surface temperature (no measured value recorded).
- Hot Springs
Public land
Listed by NCEI as a thermal spring with a hot maximum surface temperature (no measured value recorded).
- Hot Springs
Natrona County / Unknown
Hot Springs is a geothermal spring in Wyoming (Natrona County).
- Hot Springs at Sevenmile Hole
189°F (87°C) / Public land
Hot Springs at Sevenmile Hole is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Hot Springs at Sulphur Hills
196°F (91°C) / Public land
Hot Springs at Sulphur Hills is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Hot Springs East of Mary Lake
Public land
Listed by NCEI as a thermal spring with a hot maximum surface temperature (no measured value recorded).
- Hot Springs in Pelican Valley
156°F (69°C) / Public land
Hot Springs in Pelican Valley is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Hot Springs on Bog Creek
199°F (93°C) / Public land
Hot Springs on Bog Creek is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Hot Springs on Bog Creek
185°F (85°C) / Public land
Hot Springs on Bog Creek is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Hot Springs on Upper Sour Creek
194°F (90°C) / Public land
Hot Springs on Upper Sour Creek is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Hot Springs State Park
Unknown
Hot Springs State Park is a public recreation area in Thermopolis, Wyoming, known for its hot springs, which flow at a constant temperature of 135 °F (57.2 °C). The state park offers free bathing at the State Bath House, where temperatures are moderated to a therapeutic 104 °F (40.0 °C).
- Hot Springs, Rabbit Creek Group
198°F (92°C) / Public land
Hot Springs, Rabbit Creek Group is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Hot, on Lamar River
Public land
Listed by NCEI as a thermal spring with a warm maximum surface temperature (no measured value recorded).
- Huckelberry Hot Spring
Teton County / Unknown
Huckelberry Hot Spring is a geothermal spring in Wyoming (Teton County).
- Huckleberry Hot Springs
Teton County / Unknown
Huckleberry Hot Springs is a geothermal spring in Wyoming (Teton County).
- Imperial Geyser, Spray Geyser
192°F (89°C) / Public land
Imperial Geyser, Spray Geyser is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Indigo Spring
Public land
Indigo Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Iron Spring
86°F (30°C) / Public land
Iron Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Jackson Lake Hot Springs
Teton County / 162°F (72°C) / Unknown
Jackson Lake Hot Springs is a geothermal spring in Wyoming (Teton County) with a recorded surface temperature of 162°F (72°C).
- Jakeys Fork Spring
68°F (20°C) / Unknown
Jakeys Fork Spring is a geothermal spring in Wyoming with a recorded surface temperature of 68°F (20°C).
- Jewel Geyser
Public land
Jewel Geyser is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Johnson Springs
115°F (46°C) / Unknown
Johnson Springs is a geothermal spring in Wyoming with a recorded surface temperature of 115°F (46°C).
- Josephs Coat Springs
199°F (93°C) / Public land
Josephs Coat Springs is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Kelly Warm Springs
Teton County / 81°F (27°C) / Unknown
Kelly Warm Springs is a geothermal spring in Wyoming (Teton County) with a recorded surface temperature of 81°F (27°C).
- Kendall Warm Spring
Sublette County / 86°F (30°C) / Unknown
Kendall Warm Spring is a geothermal spring in Wyoming (Sublette County) with a recorded surface temperature of 86°F (30°C).
- King Geyser
Public land
King Geyser is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Lakeshore Spring
Teton County / Public land
Lakeshore Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Lakeside Spring
Teton County / Public land
Lakeside Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Leather Pool
Teton County / Public land
Leather Pool is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Ledge Spring
Teton County / Public land
Ledge Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Lemon Spring
Public land
Lemon Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Liberty Pool
Public land
Liberty Pool is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Limekiln Springs
Teton County / Public land
Limekiln Springs is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Little Sheep Mountain Spring
68°F (20°C) / Unknown
Little Sheep Mountain Spring is a geothermal spring in Wyoming with a recorded surface temperature of 68°F (20°C).
- Little Warm Spring
Fremont County / 77°F (25°C) / Unknown
Little Warm Spring is a geothermal spring in Wyoming (Fremont County) with a recorded surface temperature of 77°F (25°C).
- Lone Star Geyser Basin
Public land
Lone Star Geyser Basin is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Maiden's Grave Spring
Teton County / Public land
Maiden's Grave Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Mammoth Hot Springs
Park County / 163°F (73°C) / Public land
Mammoth Hot Springs is a large complex of hot springs on a hill of travertine in Yellowstone National Park adjacent to Fort Yellowstone and the Mammoth Hot Springs Historic District.
- Many Springs Pond
Public land
Many Springs Pond is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Marathon Pool
Teton County / Public land
Marathon Pool is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Medusa Spring
Public land
Medusa Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Mimulus Pool
Teton County / Public land
Mimulus Pool is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Mirror Pool
Teton County / Public land
Mirror Pool is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Monument Geyser Basin
197°F (92°C) / Public land
Monument Geyser Basin is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Morning Glory Pool
Teton County / Public land
lake in Teton County, Wyoming, USA
- Morning Mist Springs
205°F (96°C) / Public land
Morning Mist Springs is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Morning's Thief
Public land
Morning's Thief is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Mr. Bubbles
Public land
Mr. Bubbles is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Mud Geysers
Public land
Listed by NCEI as a thermal spring with a hot maximum surface temperature (no measured value recorded).
- Mud Volcano
131°F (55°C) / Public land
Mud Volcano is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Mushroom Spring
Public land
Mushroom Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Mustard Spring
Teton County / Public land
Mustard Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Needle Hot Springs
Park County / 75°F (24°C) / Unknown
Needle Hot Springs is a geothermal spring in Wyoming (Park County) with a recorded surface temperature of 75°F (24°C).
- Norris Pool
Teton County / Public land
Norris Pool is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- North Buffalo Fork Springs
113°F (45°C) / Unknown
North Buffalo Fork Springs is a geothermal spring in Wyoming with a recorded surface temperature of 113°F (45°C).
- North Chain Lake
Public land
North Chain Lake is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- North Purple
Public land
North Purple is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Octopus
Public land
Octopus is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Octopus Spring
Public land
Octopus Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Oil Slick Pool
Teton County / Public land
Oil Slick Pool is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Ojo Caliente Spring
Public land
Ojo Caliente Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Olympic Pool
Public land
Olympic Pool is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Opal Pool
Teton County / Public land
Opal Pool is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Opalescent Pool
Teton County / Public land
Opalescent Pool is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Orange
Public land
Orange is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Orange Mound Spring
Park County / Public land
Orange Mound Spring is one of the several hot springs in Yellowstone National Park. The name comes from its dark orange appearance caused by orange cyanobacteria living on the travertine, the rock that it is made of.
- Oval Spring
Public land
Oval Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Pear
Public land
Pear is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Pendant Spring
Teton County / Public land
Pendant Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Pentagonal Spring
Public land
Pentagonal Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Percolating Spring
Teton County / Public land
Percolating Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Perforated Pool
Teton County / Public land
Perforated Pool is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Pine
Public land
Pine is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Pinto
Public land
Pinto is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Pinto Spring
Teton County / Public land
Pinto Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Ponuntpa Springs Group
180°F (82°C) / Public land
Ponuntpa Springs Group is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Punch Bowl Spring
Teton County / Public land
Punch Bowl Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Quagmire Group
203°F (95°C) / Public land
Quagmire Group is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Queens Laundry
192°F (89°C) / Public land
Queens Laundry is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Rabbit Creek Group
198°F (92°C) / Public land
Rabbit Creek Group is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Ragged Spring
Teton County / Public land
Ragged Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Rainbow Pool
Teton County / Public land
Rainbow Pool is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Rainbow Springs
190°F (88°C) / Public land
Rainbow Springs is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Ravine
Public land
Ravine is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- River Group
196°F (91°C) / Public land
River Group is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- River Group
205°F (96°C) / Public land
River Group is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- River Growler
Public land
River Growler is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Roadside Spring East (MNCNN031)
Public land
Roadside Spring East (MNCNN031) is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Roadside Spring West (MNCNN030)
Public land
Roadside Spring West (MNCNN030) is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Roadside Springs, Frying Pan Spring
158°F (70°C) / Public land
Roadside Springs, Frying Pan Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Rock Spring
Public land
Rock Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Round
Public land
Round is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Round Spring
Public land
Round Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Rubber Pool
Public land
Rubber Pool is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Sapphire Pool
Teton County / Public land
Sapphire Pool is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Scaffold Spring
Public land
Scaffold Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Scalloped Spring
Teton County / Public land
Scalloped Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Sea Weed
Public land
Sea Weed is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Secret Valley Hot Springs
Park County / 95°F (35°C) / Public land
Secret Valley Hot Springs is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Seismic
Public land
Seismic is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Seismograph Pool
Teton County / Public land
Seismograph Pool is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Semi-Centennial Geyser
198°F (92°C) / Public land
Semi-Centennial Geyser is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Serendepity Springs
Public land
Serendepity Springs is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Serpents Tongue
Public land
Serpents Tongue is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Sevenmile Hole
154°F (68°C) / Public land
Sevenmile Hole is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Sheep Mountain Springs
70°F (21°C) / Unknown
Sheep Mountain Springs is a geothermal spring in Wyoming with a recorded surface temperature of 70°F (21°C).
- Shelf
Public land
Shelf is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Shield Spring
Teton County / Public land
Shield Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Shoshone Hot Springs
Park County / 95°F (35°C) / Unknown
Shoshone Hot Springs is a geothermal spring in Wyoming (Park County) with a recorded surface temperature of 95°F (35°C).
- Silent Pool
Public land
Silent Pool is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Silex Spring
Teton County / Public land
Silex Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Silver Globe
Public land
Silver Globe is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Silverr Globe Cave
Public land
Silverr Globe Cave is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Sizzling Basin
Park County / Public land
Sizzling Basin is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Smoke Jumper Hot Springs
Teton County / Public land
Smoke Jumper Hot Springs is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Snake Hot Springs
Teton County / Public land
Snake Hot Springs is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Sour Lake
Public land
Sour Lake is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- South Entrance Hot Springs
Teton County / Public land
South Entrance Hot Springs is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- South Orange Springs
Public land
South Orange Springs is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- South Purple
Public land
South Purple is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- South Scalloped Spring
Teton County / Public land
South Scalloped Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Spa
Public land
Spa is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Spiteful Geyser
Public land
Spiteful Geyser is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Splendid
Public land
Splendid is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Springs on Fairy Creek
Public land
Listed by NCEI as a thermal spring with a hot maximum surface temperature (no measured value recorded).
- Sprite Pool
Teton County / Public land
Sprite Pool is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Square Spring
Teton County / Public land
Square Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Steam Vents at Roaring Mountain
Public land
Listed by NCEI as a thermal spring with a hot maximum surface temperature (no measured value recorded).
- Steamboat Springs
198°F (92°C) / Public land
Steamboat Springs is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Steele Hot Springs
Sublette County / 102°F (39°C) / Unknown
Steele Hot Springs is a geothermal spring in Wyoming (Sublette County) with a recorded surface temperature of 102°F (39°C).
- Stirrup
Public land
Stirrup is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Sulphide Spring
Teton County / Public land
Sulphide Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Sulphur Caldron
Park County / 190°F (88°C) / Public land
Sulphur Caldron is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Sulphur Springs
194°F (89°C) / Public land
Sulphur Springs is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Summit Lake Hot Springs
Teton County / Public land
Summit Lake Hot Springs is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Sunset Lake
Teton County / Public land
Sunset Lake is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Surging Spring
Teton County / Public land
Surging Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Surprise Pool
Teton County / Public land
Surprise Pool is a hot spring pool in the Lower Geyser Basin of Yellowstone National Park in the United States. It is located near Great Fountain Geyser and A-0 Geyser.
- Sweetwater Station Warm Springs
90°F (32°C) / Unknown
Sweetwater Station Warm Springs is a geothermal spring in Wyoming with a recorded surface temperature of 90°F (32°C).
- Sylvan Springs
192°F (89°C) / Public land
Sylvan Springs is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Taurus Spring
Public land
Taurus Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Teakettle Spring
Public land
Teakettle Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Terra Cotta
Public land
Terra Cotta is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Terrace Hot Spring
Park County / Public land
Terrace Hot Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Terrace Springs
Public land
Terrace Springs is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- The Mudkettles
Public land
Listed by NCEI as a thermal spring with a hot maximum surface temperature (no measured value recorded).
- The Mushpots
Public land
Listed by NCEI as a thermal spring with a hot maximum surface temperature (no measured value recorded).
- Three Vent
Public land
Three Vent is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Tire Pool
Public land
Tire Pool is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Topaz
Public land
Topaz is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Topaz Spring
Teton County / Public land
Topaz Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Topsoil Spring
Teton County / Public land
Topsoil Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Tortoise Shell Spring
Teton County / Public land
Tortoise Shell Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Trefoil aka North Round Spring/ Cloverleaf
Public land
Trefoil aka North Round Spring/ Cloverleaf is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Turbid Springs
198°F (92°C) / Public land
Turbid Springs is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Turbulent Pool
Park County / Public land
Turbulent Pool is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Turquoise Spring
Teton County / Public land
Turquoise Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Unng-Bsb-1
Public land
Unng-Bsb-1 is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- UNNG-MGB-7 Numerous geothermal features
Public land
UNNG-MGB-7 Numerous geothermal features is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Unng-Wsg-5
Public land
Unng-Wsg-5 is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Vandalized Pool
Teton County / Public land
Vandalized Pool is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Variable Spring
Public land
hot spring located in Yellowstone National Park
- Vault Spring
Public land
Vault Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Vermilion Springs
140°F (60°C) / Public land
Vermilion Springs is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Violet Springs
Public land
Listed by NCEI as a thermal spring with a hot maximum surface temperature (no measured value recorded).
- Wall Pool
Teton County / Public land
Wall Pool is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Warm Spring
Sublette County / Unknown
Warm Spring is a geothermal spring in Wyoming (Sublette County).
- Warm Springs
Platte County / 70°F (21°C) / Unknown
Warm Springs is a geothermal spring in Wyoming (Platte County) with a recorded surface temperature of 70°F (21°C).
- Warm Springs
Fremont County / Unknown
Warm Springs is a geothermal spring in Wyoming (Fremont County).
- Warm Springs
Fremont County / Unknown
Warm Springs is a geothermal spring in Wyoming (Fremont County).
- Washakie Mineral Hot Springs
Fremont County / 111°F (44°C) / Unknown
Washakie Mineral Hot Springs is a geothermal spring in Wyoming (Fremont County) with a recorded surface temperature of 111°F (44°C).
- Washburn Hot Springs
Park County / 196°F (91°C) / Public land
Washburn Hot Springs is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Wave Spring
Teton County / Public land
Wave Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- West
Public land
West is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- West Round
Public land
West Round is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- White Creek Group
185°F (85°C) / Public land
White Creek Group is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- White Dome Geyser, Surprise Pool
203°F (95°C) / Public land
White Dome Geyser, Surprise Pool is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- White Sand Spring
Teton County / Public land
White Sand Spring is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Whiterock Springs
144°F (62°C) / Public land
Whiterock Springs is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Wind River Canyon Spring
72°F (22°C) / Unknown
Wind River Canyon Spring is a geothermal spring in Wyoming with a recorded surface temperature of 72°F (22°C).
- Wolf Lake Springs
91°F (33°C) / Public land
Wolf Lake Springs is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- YM-210 (South Pool)
Public land
YM-210 (South Pool) is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.
- Zomar
Public land
Zomar is a thermal feature inside Yellowstone National Park. Swimming or bathing in any water of entirely thermal origin is prohibited in the park, and hydrothermal areas may be viewed only from boardwalks and designated trails.