Live · updated daily from USGS
Swimmable water near you
1,324 USGS sensors are reporting a live water temperature right now, the newest reading from August 23, 2026 (8 hrs ago).
- Cold · below 60°F · 218
- Cool · 60–69°F · 484
- Comfortable · 70–86°F · 544
- Warm · above 86°F · 78
- 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.
- EAST FORK WALLOWA RIVER NEAR JOSEPH, ORUSGS gauge · Oregon · 14 ft³/s51°F131 mi8 hrs ago
- Big Hole River bl Big Lake Cr at Wisdom MTUSGS gauge · Montana · 12 ft³/s60°F143 mi8 hrs ago
- Bitterroot River near Darby MTUSGS gauge · Montana · 495 ft³/s60°F147 mi8 hrs ago
- Big Hole River near Melrose MTUSGS gauge · Montana · 243 ft³/s63°F164 mi8 hrs ago
- MINAM RIVER AT MINAM, ORUSGS gauge · Oregon · 54 ft³/s65°F165 mi9 hrs ago
- Big Hole River near Glen MTUSGS gauge · Montana · 230 ft³/s64°F166 mi8 hrs ago
- Big Hole River near Wise River MTUSGS gauge · Montana61°F167 mi8 hrs ago
- Big Hole River at Maiden Rock nr Divide MTUSGS gauge · Montana · 268 ft³/s59°F171 mi8 hrs ago
Nearest swimmable spots
Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.
4.9(44)Sawtooth Lake
Picturesque, high-altitude lake featuring camping, trout fishing & well-maintained hiking trails.
16 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.