Live · updated daily from USGS
Swimmable water near you
2,133 USGS sensors are reporting a live water temperature right now, the newest reading from August 22, 2026 (21 hrs ago).
- Cold · below 60°F · 382
- 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.
- Scioto River above Shadeville OHUSGS gauge · Ohio74°F35 mi21 hrs ago
- Raccoon Creek near Granville OHUSGS gauge · Ohio · 229 ft³/s69°F37 mi22 hrs ago
- Hoover Reservoir at Central College OHUSGS gauge · Ohio78°F45 mi21 hrs ago
- Shade River near Chester OHUSGS gauge · Ohio · 102 ft³/s70°F46 mi21 hrs ago
- Big Darby Creek above Georgesville OHUSGS gauge · Ohio72°F46 mi22 hrs ago
- Griggs Reservoir at Columbus OHUSGS gauge · Ohio73°F46 mi21 hrs ago
- Clover Groff Ditch below Alton OHUSGS gauge · Ohio · 58 ft³/s76°F46 mi22 hrs ago
- Paint Creek near Bainbridge OHUSGS gauge · Ohio74°F50 mi21 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.