Live · updated daily from USGS
Swimmable water near you
2,137 USGS sensors are reporting a live water temperature right now, the newest reading from August 21, 2026 (8 hrs ago).
- Cold · below 60°F · 375
- Cool · 60–69°F · 595
- Comfortable · 70–86°F · 938
- Warm · above 86°F · 229
- 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.
- Mosquito Creek near Greene Center OHUSGS gauge · Ohio · 0 ft³/s66°F19 mi8 hrs ago
- Grand River near Painesville OHUSGS gauge · Ohio · 71 ft³/s71°F22 mi9 hrs ago
- Conneaut Creek at Dickonsburg, PAUSGS gauge · Pennsylvania · 3 ft³/s65°F23 mi8 hrs ago
- Pymatuning Creek at Kinsman OHUSGS gauge · Ohio69°F24 mi8 hrs ago
- Mosquito Creek bl Mosquito Ck Dam nr Cortland OHUSGS gauge · Ohio · 21 ft³/s78°F31 mi8 hrs ago
- Shenango River near Transfer, PAUSGS gauge · Pennsylvania · 179 ft³/s70°F34 mi8 hrs ago
- Mahoning River at Leavittsburg OHUSGS gauge · Ohio · 304 ft³/s73°F36 mi9 hrs ago
- Mahoning River near U.S. Route 422 at Warren OHUSGS gauge · Ohio73°F36 mi8 hrs 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.