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 21, 2026 (1 day ago).
- Cold · below 60°F · 375
- Cool · 60–69°F · 594
- Comfortable · 70–86°F · 938
- Warm · above 86°F · 228
- 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.
- WEST BRANCH FARMINGTON RIVER AT RIVERTON, CTUSGS gauge · Connecticut · 177 ft³/s50°F20 mi1 day ago
- CONNECTICUT RIVER AT THOMPSONVILLE, CTUSGS gauge · Connecticut · 5,990 ft³/s77°F22 mi1 day ago
- NORTH BRANCH PARK RIVER AT HARTFORD, CTUSGS gauge · Connecticut · 33 ft³/s69°F32 mi1 day ago
- CONNECTICUT RIVER NEAR NORTHFIELD, MAUSGS gauge · Massachusetts · 5,880 ft³/s78°F37 mi1 day ago
- WARE RIVER AT INTAKE WORKS NEAR BARRE, MAUSGS gauge · Massachusetts · 29 ft³/s71°F43 mi1 day ago
- CONNECTICUT RIVER AT MIDDLE HADDAM, CTUSGS gauge · Connecticut · 2,100 ft³/s78°F50 mi1 day ago
- HUDSON RIVER AT ALBANY NYUSGS gauge · New York77°F53 mi1 day ago
- QUINAPOXET RIVER AT CANADA MILLS NEAR HOLDEN, MAUSGS gauge · Massachusetts · 7 ft³/s70°F54 mi1 day ago
Nearest swimmable spots
Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.
4.7(34)Otis Reservoir
This 1,085-acre reservoir offers recreational activities, including water-skiing & fishing.
10 mi from your location
5.0(14)Lake Buel
Vast pond & popular nature getaway for leisure, boating & wildlife watching, with amenities nearby.
21 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.

