Live · updated daily from USGS
Swimmable water near you
1,324 USGS sensors are reporting a live water temperature right now, the newest reading from August 23, 2026 (10 hrs ago).
- Cold · below 60°F · 218
- Cool · 60–69°F · 484
- Comfortable · 70–86°F · 544
- 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.
- Delaware River at Riegelsville NJUSGS gauge · New Jersey · 7,460 ft³/s73°F5.7 mi11 hrs ago
- Pohatcong Crk at Creek Rd nr Carpentersville NJUSGS gauge · New Jersey · 42 ft³/s67°F8.3 mi11 hrs ago
- Lehigh River at Glendon, PAUSGS gauge · Pennsylvania · 2,050 ft³/s71°F8.6 mi11 hrs ago
- Little Lehigh Creek at Tenth St. Br. at AllentownUSGS gauge · Pennsylvania · 169 ft³/s64°F11 mi11 hrs ago
- Little Lehigh Creek near Allentown, PAUSGS gauge · Pennsylvania · 83 ft³/s62°F11 mi11 hrs ago
- Delaware River at Frenchtown NJUSGS gauge · New Jersey73°F11 mi11 hrs ago
- Cedar Creek at Mouth near Allentown, PAUSGS gauge · Pennsylvania · 75 ft³/s66°F12 mi11 hrs ago
- LE SP15 Schantz Spring near Wescosville, PAUSGS gauge · Pennsylvania · 1 ft³/s55°F15 mi11 hrs ago
Nearest swimmable spots
Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.
4.5(201)Lake Towhee Park
Tranquil natural area offering picnicking, boating, fishing, hiking, a playground & a ball field.
5.0 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.
6.7 mi from your location
4.2(97)Dutch Springs
Lively lake with big inflatables, watercraft rentals & scuba attractions, plus an aerial park.
10 mi from your location
4.4(795)Riverside Park
Public recreation space along the Delaware River with a playground & a sheltered, open-air theater.
11 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.
