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 (22 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.
- SACO RIVER AT RIVER STREET, AT BARTLETT, NHUSGS gauge · New Hampshire · 61 ft³/s60°F20 mi22 hrs ago
- Wild River at Gilead, MaineUSGS gauge · Maine · 26 ft³/s65°F33 mi22 hrs ago
- ISINGLASS R AT ROCHESTER NECK RD, NR DOVER, NHUSGS gauge · New Hampshire · 4 ft³/s64°F47 mi23 hrs ago
- LAMPREY RIVER AT LANGFORD ROAD, AT RAYMOND, NHUSGS gauge · New Hampshire · 7 ft³/s71°F61 mi22 hrs ago
- CONNECTICUT RIVER AT NORTH STRATFORD, NHUSGS gauge · New Hampshire · 501 ft³/s63°F67 mi23 hrs ago
- SOUTH BRANCH PISCATAQUOG RIVER NEAR GOFFSTOWN, NHUSGS gauge · New Hampshire · 15 ft³/s68°F70 mi22 hrs ago
- POPE BROOK TRIBUTARY (W-9), NR NORTH DANVILLE, VTUSGS gauge · Vermont · 0 ft³/s57°F71 mi22 hrs ago
- 63°F76 mi23 hrs ago
Nearest swimmable spots
Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.
4.7(41)Conway Lake
A popular fishing hole, this 1,316-acre lake features a boat launch, swimming beach & campground.
5.7 mi from your location
4.7(60)Ossipee Lake
Vacation homes surround this tranquil destination, with beaches for swimming, fishing & boating.
12 mi from your location
4.8(110)Long Lake
This 11-mile-long glacial lake features fishing, boating, loons & other wildlife.
18 mi from your location
4.8(191)Sebago Lake
Large lake & recreation area offering fishing, boating, campgrounds, trails & beaches.
21 mi from your location
4.8(33)Great East Lake
This lake bordering Maine & New Hampshire offers activities such as boating, fishing & water skiing.
22 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.


