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 (21 hrs 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.
- NORTH BRANCH PARK RIVER AT HARTFORD, CTUSGS gauge · Connecticut · 33 ft³/s69°F14 mi22 hrs ago
- CONNECTICUT RIVER AT THOMPSONVILLE, CTUSGS gauge · Connecticut · 5,990 ft³/s77°F15 mi21 hrs ago
- CONNECTICUT RIVER AT MIDDLE HADDAM, CTUSGS gauge · Connecticut · 2,100 ft³/s78°F19 mi21 hrs ago
- EAST BRANCH EIGHTMILE RIVER NEAR NORTH LYME, CTUSGS gauge · Connecticut · 93 ft³/s67°F27 mi21 hrs ago
- WEST BRANCH FARMINGTON RIVER AT RIVERTON, CTUSGS gauge · Connecticut · 177 ft³/s50°F32 mi21 hrs ago
- CONNECTICUT RIVER AT ESSEX, CTUSGS gauge · Connecticut78°F32 mi21 hrs ago
- CONNECTICUT RIVER AT OLD LYME, CTUSGS gauge · Connecticut77°F35 mi22 hrs ago
- PONAGANSET RIVER AT RSVR OUTLET AT GLOCESTER, RIUSGS gauge · Rhode Island · 0 ft³/s72°F36 mi21 hrs ago
Nearest swimmable spots
Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.
Wethersfield Cove
Tranquil inlet bay featuring a marina with a boat launch & slip rentals, fishing spots & park areas.
13 mi from your location
4.5(193)River Highlands State Park
Forested park on the Connecticut River featuring trails, campsites & bluffs with scenic views.
16 mi from your location
4.8(374)West Hartford Reservoir
Recreation area offering forested walking trails around a working water reservoir.
18 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.

