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 22, 2026 (11 hrs ago).
- Cold · below 60°F · 384
- Cool · 60–69°F · 607
- Comfortable · 70–86°F · 929
- 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.
- McDonalds Branch in Byrne State Forest NJUSGS gauge · New Jersey · 1 ft³/s68°F5.1 mi12 hrs ago
- Greenwood Branch at New Lisbon NJUSGS gauge · New Jersey · 25 ft³/s71°F10 mi12 hrs ago
- North Branch Rancocas Creek at Pemberton NJUSGS gauge · New Jersey · 57 ft³/s74°F13 mi12 hrs ago
- Crosswicks Ck at Hockamik Rd near Cookstown NJUSGS gauge · New Jersey · 7 ft³/s73°F15 mi12 hrs ago
- 78°F15 mi12 hrs ago
- 74°F17 mi12 hrs ago
- Barnegat Bay near Waretown NJUSGS gauge · New Jersey78°F20 mi11 hrs ago
- Crosswicks Creek at Extonville NJUSGS gauge · New Jersey · 86 ft³/s74°F22 mi12 hrs ago
Nearest swimmable spots
Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.
4.6(270)Atsion Lake
Boating, swimming & fishing are popular at this big lake, along with hiking & cross-country skiing.
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.

