Live · updated daily from USGS
Swimmable water near you
2,135 USGS sensors are reporting a live water temperature right now, the newest reading from August 22, 2026 (10 hrs ago).
- Cold · below 60°F · 384
- 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.
- Great Miami River at Hamilton OHUSGS gauge · Ohio · 14,500 ft³/s73°F10 mi10 hrs ago
- EAST FORK WHITEWATER RIVER AT BROOKVILLE, INUSGS gauge · Indiana65°F22 mi1 day ago
- EAST FORK WHITEWATER RIVER AT RICHMOND, INUSGS gauge · Indiana · 320 ft³/s70°F24 mi1 day ago
- Caesar Creek near Wellman OHUSGS gauge · Ohio60°F29 mi11 hrs ago
- Stillwater River at Pleasant Hill OHUSGS gauge · Ohio · 1,160 ft³/s70°F38 mi10 hrs ago
- Little Miami River near Oldtown OHUSGS gauge · Ohio · 225 ft³/s70°F39 mi10 hrs ago
- Great Miami River at Troy OHUSGS gauge · Ohio · 5,760 ft³/s73°F41 mi11 hrs ago
- 79°F43 mi11 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.