Live · updated daily from USGS
Swimmable water near you
2,079 USGS sensors are reporting a live water temperature right now, the newest reading from August 22, 2026 (22 hrs ago).
- Cold · below 60°F · 373
- Cool · 60–69°F · 596
- Comfortable · 70–86°F · 910
- Warm · above 86°F · 200
- 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.
- Maumee River near Defiance OHUSGS gauge · Ohio · 3,870 ft³/s77°F15 mi23 hrs ago
- Maumee River at Antwerp OHUSGS gauge · Ohio · 2,220 ft³/s75°F18 mi23 hrs ago
- BLACK CREEK AT BRUSH COLLEGE RD NEAR HARLAN, INUSGS gauge · Indiana · 1 ft³/s69°F26 mi1 day ago
- BLACK CREEK AT DARLING RD NEAR HARLAN, INUSGS gauge · Indiana68°F26 mi1 day ago
- Maumee River at Waterville OHUSGS gauge · Ohio · 3,330 ft³/s77°F46 mi23 hrs ago
- Indian Lake at Russells Point OHUSGS gauge · Ohio78°F53 mi23 hrs ago
- WABASH RIVER AT HUNTINGTON, INUSGS gauge · Indiana73°F59 mi1 day ago
- Sandusky River near Fremont OHUSGS gauge · Ohio · 337 ft³/s73°F67 mi23 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.