Live · updated daily from USGS
Swimmable water near you
2,136 USGS sensors are reporting a live water temperature right now, the newest reading from August 22, 2026 (6 hrs ago).
- Cold · below 60°F · 384
- Cool · 60–69°F · 607
- Comfortable · 70–86°F · 930
- 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.
- Mahoning River at Alliance OHUSGS gauge · Ohio70°F16 mi7 hrs ago
- West Branch Mahoning River near Ravenna OHUSGS gauge · Ohio · 4 ft³/s68°F22 mi7 hrs ago
- Unnamed Tributary near Dellroy OHUSGS gauge · Ohio62°F23 mi6 hrs ago
- Willow Run near Dellroy OHUSGS gauge · Ohio64°F24 mi6 hrs ago
- Mahoning River bl Berlin Dam nr Berlin Center OHUSGS gauge · Ohio · 360 ft³/s74°F24 mi7 hrs ago
- Indian Fork at Dellroy OHUSGS gauge · Ohio68°F25 mi6 hrs ago
- West Branch Mahoning River at Wayland OHUSGS gauge · Ohio · 32 ft³/s66°F26 mi7 hrs ago
- Bear Hole Run near Carrollton OHUSGS gauge · Ohio62°F28 mi8 hrs ago
Nearest swimmable spots
Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.
4.5(4,186)Portage Lakes State Park
A magnet for boaters, this park features 8 lakes as well as camping spots & picnic shelters.
10 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.