Live · updated daily from USGS
Swimmable water near you
2,137 USGS sensors are reporting a live water temperature right now, the newest reading from August 21, 2026 (9 hrs ago).
- Cold · below 60°F · 375
- Cool · 60–69°F · 595
- Comfortable · 70–86°F · 938
- Warm · above 86°F · 229
- 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.
- Spring Creek at Trexlertown, PAUSGS gauge · Pennsylvania · 7 ft³/s62°F1.7 mi9 hrs ago
- Little Lehigh Creek near Trexlertown, PAUSGS gauge · Pennsylvania · 11 ft³/s66°F1.7 mi9 hrs ago
- LE SP15 Schantz Spring near Wescosville, PAUSGS gauge · Pennsylvania · 1 ft³/s55°F2.9 mi9 hrs ago
- Cedar Creek at Mouth near Allentown, PAUSGS gauge · Pennsylvania · 19 ft³/s64°F5.1 mi9 hrs ago
- Little Lehigh Creek near Allentown, PAUSGS gauge · Pennsylvania · 79 ft³/s64°F5.4 mi9 hrs ago
- Little Lehigh Creek at Tenth St. Br. at AllentownUSGS gauge · Pennsylvania · 95 ft³/s63°F6.4 mi9 hrs ago
- Jordan Creek near Schnecksville, PAUSGS gauge · Pennsylvania · 47 ft³/s65°F8.9 mi10 hrs ago
- 66°F11 mi9 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.
12 mi from your location
4.2(97)Dutch Springs
Lively lake with big inflatables, watercraft rentals & scuba attractions, plus an aerial park.
15 mi from your location
4.5(201)Lake Towhee Park
Tranquil natural area offering picnicking, boating, fishing, hiking, a playground & a ball field.
16 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.
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.
