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.
- 63°F9.6 mi11 hrs ago
- 62°F18 mi11 hrs ago
- LAMPREY RIVER AT LANGFORD ROAD, AT RAYMOND, NHUSGS gauge · New Hampshire · 7 ft³/s71°F20 mi10 hrs ago
- CAMBRIDGE RES., UNNAMED TRIB 2, NR LEXINGTON, MAUSGS gauge · Massachusetts · 0 ft³/s65°F27 mi10 hrs ago
- 63°F27 mi10 hrs ago
- CAMBRIDGE RES., UNNAMED TRIB 3, NR LEXINGTON, MAUSGS gauge · Massachusetts · 0 ft³/s66°F28 mi10 hrs ago
- HOBBS BRK AT TRAPELO RD AT LINCOLN, MAUSGS gauge · Massachusetts77°F28 mi10 hrs ago
- 78°F28 mi10 hrs ago
Nearest swimmable spots
Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.
3.6(26)Country Pond
Trees encircle this large, scenic pond in a serene environment that draws boaters & fishermen.
7.7 mi from your location
4.8(14)Island Pond
A 532-acre pond with an island known for fishing, birdwatching, boating, water skiing & hiking.
12 mi from your location
4.7(121)Canobie Lake
Calm reservoir with an amusement park along its shores, also popular for kayaking & fishing.
12 mi from your location
4.8(57)Pawtuckaway Lake
Celebrated, 784-acre lake featuring swimming, boating, canoe rentals, mountain biking & picnicking.
22 mi from your location
4.7(198)Massabesic Lake
Sizable lake & public water supply in a scenic setting with walking trails, fishing & boating.
24 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.