Live · updated daily from USGS
Swimmable water near you
2,135 USGS sensors are reporting a live water temperature right now, the newest reading from August 21, 2026 (22 hrs ago).
- Cold · below 60°F · 375
- Cool · 60–69°F · 594
- Comfortable · 70–86°F · 938
- Warm · above 86°F · 228
- You
A map of the United States with one coloured dot per USGS sensor reporting a live water temperature. The readings are listed below.
Nearest live readings
The closest USGS sensors currently reporting a water temperature, nearest first.
- SNAKE RIVER AB JACKSON LAKE AT FLAGG RANCH WYUSGS gauge · Wyoming · 245 ft³/s63°F5.9 mi23 hrs ago
- SNAKE RIVER NEAR MORAN, WYUSGS gauge · Wyoming · 5,160 ft³/s63°F22 mi22 hrs ago
- Pacific Creek at Moran, WYUSGS gauge · Wyoming · 47 ft³/s58°F22 mi23 hrs ago
- Firehole River at Old Faithful, YNPUSGS gauge · Wyoming · 38 ft³/s59°F23 mi23 hrs ago
- BUFFALO FORK AB LAVA CREEK, NR MORAN, WYUSGS gauge · Wyoming · 260 ft³/s58°F24 mi23 hrs ago
- Blackrock Cr bl Split Rock Cr, nr Moran, WYUSGS gauge · Wyoming54°F33 mi23 hrs ago
- Firehole River near West Yellowstone MTUSGS gauge · Wyoming · 192 ft³/s73°F34 mi23 hrs ago
- Gibbon River at Madison Jct, YNPUSGS gauge · Wyoming · 76 ft³/s65°F35 mi23 hrs ago
Nearest swimmable spots
Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.
4.8(118)Jackson Lake
15-mi. glacial lake offering a swimming beach & other activities such as fishing & boating.
20 mi from your location
About this map
Every pin is a live reading from a USGS real-time monitoring station, captured in a daily snapshot. Colours follow the site’s cold-water-safety thresholds and describe the water at that one sensor — usually a river or stream gauge, not a swim beach — so treat them as a guide to what the water is doing nearby, not a verdict on a specific spot. Readings are provisional and can be revised by the USGS. Your location only sorts this page: the coordinates appear in the address bar (rounded to about a mile) and are not saved to an account or our database.
Conditions are for general information only and can change quickly. Always judge the water in person and follow posted advisories and local guidance before swimming or paddling.