Live · updated daily from USGS
Swimmable water near you
2,137 USGS sensors are reporting a live water temperature right now, the newest reading from August 21, 2026 (10 hrs ago).
- Cold · below 60°F · 375
- Cool · 60–69°F · 595
- Comfortable · 70–86°F · 938
- Warm · above 86°F · 229
- 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.
- Wild River at Gilead, MaineUSGS gauge · Maine · 26 ft³/s65°F29 mi10 hrs ago
- SACO RIVER AT RIVER STREET, AT BARTLETT, NHUSGS gauge · New Hampshire · 61 ft³/s60°F31 mi10 hrs ago
- ISINGLASS R AT ROCHESTER NECK RD, NR DOVER, NHUSGS gauge · New Hampshire · 4 ft³/s64°F58 mi11 hrs ago
- CONNECTICUT RIVER AT NORTH STRATFORD, NHUSGS gauge · New Hampshire · 501 ft³/s63°F69 mi11 hrs ago
- LAMPREY RIVER AT LANGFORD ROAD, AT RAYMOND, NHUSGS gauge · New Hampshire · 7 ft³/s71°F74 mi10 hrs ago
- CONNECTICUT R BELOW INDIAN STREAM NR PITTSBURG, NHUSGS gauge · New Hampshire · 328 ft³/s60°F79 mi11 hrs ago
- POPE BROOK TRIBUTARY (W-9), NR NORTH DANVILLE, VTUSGS gauge · Vermont · 0 ft³/s57°F81 mi10 hrs ago
- 63°F85 mi11 hrs ago
Nearest swimmable spots
Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.
4.8(110)Long Lake
This 11-mile-long glacial lake features fishing, boating, loons & other wildlife.
0.1 mi from your location
4.8(191)Sebago Lake
Large lake & recreation area offering fishing, boating, campgrounds, trails & beaches.
14 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.

