Live · updated daily from USGS
Swimmable water near you
1,325 USGS sensors are reporting a live water temperature right now, the newest reading from August 23, 2026 (1 hr ago).
- Cold · below 60°F · 218
- Cool · 60–69°F · 484
- Comfortable · 70–86°F · 545
- Warm · above 86°F · 78
- 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.
- Spruce Run Reservoir at Clinton NJUSGS gauge · New Jersey73°F2.5 mi1 hr ago
- 80°F2.6 mi1 hr ago
- Pequest River at Pequest NJUSGS gauge · New Jersey · 189 ft³/s67°F12 mi2 hrs ago
- Delaware River at Frenchtown NJUSGS gauge · New Jersey73°F14 mi1 hr ago
- Pohatcong Crk at Creek Rd nr Carpentersville NJUSGS gauge · New Jersey · 42 ft³/s67°F15 mi1 hr ago
- Delaware River at Riegelsville NJUSGS gauge · New Jersey · 7,460 ft³/s73°F17 mi1 hr ago
- Raritan River at Manville NJUSGS gauge · New Jersey · 535 ft³/s73°F18 mi2 hrs ago
- Lehigh River at Glendon, PAUSGS gauge · Pennsylvania · 2,050 ft³/s71°F18 mi1 hr ago
Nearest swimmable spots
Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.
4.4(795)Riverside Park
Public recreation space along the Delaware River with a playground & a sheltered, open-air theater.
17 mi from your location
4.5(399)Riverside Park
Riverside public green space with picnic tables, a pavilion, a boat launch & shade trees.
22 mi from your location
4.7(259)Lake Nockamixon
Set within a lush state park, this meandering lake is known for its sailing, kayaking & fishing.
23 mi from your location
4.5(565)Speedwell Lake Park
Green space with a playground & an open field, plus a waterfall & fishing lake with a walking trail.
24 mi from your location
4.6(319)Lake Hopatcong
Bustling recreational lake for boating, water skiing & swimming, with waterfront eateries & bars.
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.