Live · updated daily from USGS
Swimmable water near you
2,135 USGS sensors are reporting a live water temperature right now, the newest reading from August 21, 2026 (17 hrs ago).
- Cold · below 60°F · 375
- Cool · 60–69°F · 594
- Comfortable · 70–86°F · 938
- Warm · above 86°F · 228
- 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.
- Ramapo River above dam at Pompton Lakes NJUSGS gauge · New Jersey75°F14 mi17 hrs ago
- Ramapo River at Pompton Lakes NJUSGS gauge · New Jersey · 582 ft³/s75°F14 mi17 hrs ago
- Pequannock River at Oak Ridge NJUSGS gauge · New Jersey · 6 ft³/s59°F14 mi17 hrs ago
- 75°F14 mi17 hrs ago
- 74°F20 mi17 hrs ago
- NEVERSINK RIVER AT GODEFFROY NYUSGS gauge · New York · 528 ft³/s64°F23 mi17 hrs ago
- DELAWARE RIVER AT PORT JERVIS NYUSGS gauge · Pennsylvania · 3,180 ft³/s69°F23 mi17 hrs ago
- Whippany River near Pine Brook NJUSGS gauge · New Jersey · 192 ft³/s71°F24 mi17 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(24)Wanaque Reservoir
Constructed in 1928, this manmade lake is 6.6 miles in length & is surrounded by dense forests.
9.2 mi from your location
Wallkill River National Wildlife Refuge
Wildlife habitat known for its diversity of birds with hunting, fishing, trails & learning programs.
13 mi from your location
4.5(10,673)Paterson Great Falls National Historical Park
National historical park known for a 77-ft. waterfall that sparked water-power development in 1792.
20 mi from your location
4.7(1,090)Nyack Beach State Park
Scenic 61-acre riverside park attracting hikers, bikers, kayakers & cross country skiers in winter.
22 mi from your location
4.7(4,043)Saddle River County Park
Multi-use pathways connect 5 different parks featuring ponds, playgrounds & athletic fields.
22 mi from your location
Indian Lake
This popular, 99-acre lake features 3 beaches with seasonal lifeguards, boating, fishing & swimming.
22 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.

