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 (2 hrs 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.
- French Creek near Phoenixville, PAUSGS gauge · Pennsylvania · 40 ft³/s69°F3.3 mi3 hrs ago
- Perkiomen Creek at Graterford, PAUSGS gauge · Pennsylvania · 133 ft³/s73°F6.2 mi3 hrs ago
- Valley Creek at PA Turnpike Br near Valley ForgeUSGS gauge · Pennsylvania · 16 ft³/s65°F8.4 mi3 hrs ago
- Schuylkill River at Norristown, PAUSGS gauge · Pennsylvania · 1,610 ft³/s77°F11 mi3 hrs ago
- Stony Creek at Sterigere Street at Norristown, PAUSGS gauge · Pennsylvania · 20 ft³/s70°F11 mi3 hrs ago
- Manatawny Creek near Spangsville, PAUSGS gauge · Pennsylvania · 27 ft³/s69°F15 mi3 hrs ago
- East Branch Brandywine Creek below Downingtown, PAUSGS gauge · Pennsylvania · 77 ft³/s69°F16 mi3 hrs ago
- Wissahickon Creek at Fort Washington, PAUSGS gauge · Pennsylvania · 56 ft³/s71°F18 mi3 hrs ago
Nearest swimmable spots
Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.
4.7(560)Green Lane Reservoir
Located on a reservoir, this area offers non-motorized & electric-powered boat use & hiking trails.
14 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.