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 22, 2026 (17 hrs ago).
- Cold · below 60°F · 384
- Cool · 60–69°F · 607
- Comfortable · 70–86°F · 929
- Warm · above 86°F · 215
- 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.
- N F SHENANDOAH RIVER NEAR STRASBURG, VAUSGS gauge · Virginia · 181 ft³/s77°F17 mi18 hrs ago
- WAITES RUN NEAR WARDENSVILLE, WVUSGS gauge · West Virginia · 1 ft³/s65°F17 mi18 hrs ago
- SOUTH BRANCH POTOMAC RIVER NEAR SPRINGFIELD, WVUSGS gauge · West Virginia · 478 ft³/s75°F22 mi18 hrs ago
- CACAPON RIVER NEAR GREAT CACAPON, WVUSGS gauge · West Virginia · 117 ft³/s75°F25 mi18 hrs ago
- N F SHENANDOAH RIVER AT MOUNT JACKSON, VAUSGS gauge · Virginia · 90 ft³/s75°F36 mi18 hrs ago
- SMITH CREEK NEAR NEW MARKET, VAUSGS gauge · Virginia · 18 ft³/s73°F39 mi18 hrs ago
- NORTH BRANCH POTOMAC RIVER AT BARNUM, WVUSGS gauge · West Virginia · 272 ft³/s57°F43 mi18 hrs ago
- POTOMAC RIVER AT POINT OF ROCKS, MDUSGS gauge · Maryland · 3,890 ft³/s78°F44 mi1 day ago
Nearest swimmable spots
Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.
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.
