Live · updated daily from USGS
Swimmable water near you
2,141 USGS sensors are reporting a live water temperature right now, the newest reading from August 22, 2026 (14 mins ago).
- Cold · below 60°F · 385
- Cool · 60–69°F · 607
- Comfortable · 70–86°F · 934
- Warm · above 86°F · 215
- 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.
- DELAWARE RIVER AT CHESTER PAUSGS gauge · Pennsylvania80°F3.9 mi1 hr ago
- Delaware River at Marcus Hook, PAUSGS gauge · Pennsylvania80°F5.5 mi1 hr ago
- DE 723 Delaware County Observation WellUSGS gauge · Pennsylvania55°F5.8 mi44 mins ago
- Darby Creek near Darby, PAUSGS gauge · Pennsylvania · 25 ft³/s72°F6.8 mi29 mins ago
- Cobbs Cr at U.S. Hghwy No. 1 at Philadelphia, PAUSGS gauge · Pennsylvania · 2 ft³/s70°F8.3 mi39 mins ago
- 81°F10.0 mi39 mins ago
- Brandywine Creek at Chadds Ford, PAUSGS gauge · Pennsylvania · 246 ft³/s72°F11 mi39 mins ago
- Schuylkill River at Philadelphia, PAUSGS gauge · Pennsylvania · 1,600 ft³/s77°F12 mi1 hr ago
Nearest swimmable spots
Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.
4.7(3,310)Ridley Creek State Park
Green oasis of woodlands & meadows offering hiking, fishing & picnicking from sunrise to sunset.
5.1 mi from your location
4.7(1,493)Brandywine Creek State Park
933-acre preserve divided by 19th-century stone walls, with tulip poplar forest & nature center.
11 mi from your location
4.8(1,846)Schuylkill River Park
This park runs along the river & offers a playground, paved paths, sports areas, a pool & a dog run.
12 mi from your location
4.6(28)Brandywine Creek
A Revolutionary War battle area, this landmark creek features historic sites & outdoor recreation.
13 mi from your location
4.7(1,283)Race Street Pier
Waterfront promenade with a lawn & soaring bridge views drawing joggers, sunbathers & picnickers.
14 mi from your location
4.5(625)Newton Lake Park
Pet-friendly neighborhood park with open fields & running/walking trails around a lake.
17 mi from your location
4.6(1,160)Cooper River Park
Boat launch, picnic areas, mini-golf, bike paths & athletic fields in a scenic, riverside setting.
18 mi from your location
4.7(1,985)Washington Lake Park
Green space with an outdoor amphitheater, skate park, dog park & golf course, plus sports fields.
19 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.



