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 (12 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.
- Huron River at Milan OHUSGS gauge · Ohio · 48 ft³/s71°F28 mi12 hrs ago
- Sandusky River near Fremont OHUSGS gauge · Ohio · 525 ft³/s73°F31 mi12 hrs ago
- Maumee River at Waterville OHUSGS gauge · Ohio · 5,310 ft³/s75°F48 mi13 hrs ago
- LOWER RIVER ROUGE AT DEARBORN, MIUSGS gauge · Michigan · 32 ft³/s69°F50 mi13 hrs ago
- Rocky River near Berea OHUSGS gauge · Ohio · 71 ft³/s69°F51 mi12 hrs ago
- LOWER RIVER ROUGE AT WAYNE, MIUSGS gauge · Michigan · 32 ft³/s69°F53 mi12 hrs ago
- RIVER ROUGE AT DETROIT, MIUSGS gauge · Michigan · 25 ft³/s69°F54 mi12 hrs ago
- Cuyahoga River at Rivergate Park at Cleveland OHUSGS gauge · Ohio79°F59 mi12 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(11)Put-in-Bay
Intimate waterside village with historic homes, a marina, shops & other tourist attractions.
0.9 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.

