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 (20 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.
- CONNECTICUT RIVER NEAR NORTHFIELD, MAUSGS gauge · Massachusetts · 5,880 ft³/s78°F9.1 mi21 hrs ago
- WARE RIVER AT INTAKE WORKS NEAR BARRE, MAUSGS gauge · Massachusetts · 29 ft³/s71°F32 mi21 hrs ago
- ASHUELOT RIVER NEAR GILSUM, NHUSGS gauge · New Hampshire · 12 ft³/s66°F35 mi20 hrs ago
- COLD RIVER AT HIGH STREET, AT ALSTEAD, NHUSGS gauge · New Hampshire · 8 ft³/s66°F40 mi20 hrs ago
- CONNECTICUT RIVER AT THOMPSONVILLE, CTUSGS gauge · Connecticut · 5,990 ft³/s77°F43 mi20 hrs ago
- QUINAPOXET RIVER AT CANADA MILLS NEAR HOLDEN, MAUSGS gauge · Massachusetts · 7 ft³/s70°F44 mi20 hrs ago
- STILLWATER RIVER NEAR STERLING, MAUSGS gauge · Massachusetts · 6 ft³/s67°F44 mi20 hrs ago
- GATES BROOK NEAR WEST BOYLSTON, MAUSGS gauge · Massachusetts · 3 ft³/s61°F46 mi21 hrs ago
Nearest swimmable spots
Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.
4.6(140)Lake Wyola State Park
Nature trails, picnic sites with grills & playing fields, plus lake for swimming & fishing.
12 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.