Live · updated daily from USGS
Swimmable water near you
1,325 USGS sensors are reporting a live water temperature right now, the newest reading from August 23, 2026 (1 hr ago).
- Cold · below 60°F · 218
- Cool · 60–69°F · 484
- Comfortable · 70–86°F · 545
- Warm · above 86°F · 78
- 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.
- Cohansey River at Greenwich NJUSGS gauge · New Jersey80°F11 mi1 hr ago
- Maurice River at Bivalve NJUSGS gauge · New Jersey79°F21 mi1 hr ago
- Maurice R at Mauricetown NJUSGS gauge · New Jersey79°F24 mi1 hr ago
- CHOPTANK RIVER NEAR GREENSBORO, MDUSGS gauge · Maryland · 81 ft³/s74°F25 mi2 hrs ago
- Manumuskin River at Cumberland NJUSGS gauge · New Jersey · 47 ft³/s69°F28 mi1 hr ago
- 090089-- Oyster Lab 4 ObsUSGS gauge · New Jersey58°F30 mi2 hrs ago
- Raccoon Creek at Wrights Mill NJUSGS gauge · New Jersey · 3 ft³/s76°F33 mi2 hrs ago
- Cape May Harbor at Cape May NJUSGS gauge · New Jersey75°F35 mi1 hr 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.