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 (14 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.
- Wissahickon Creek at Fort Washington, PAUSGS gauge · Pennsylvania · 56 ft³/s71°F8.0 mi15 hrs ago
- Pennypack Creek at Pine Road, at Philadelphia, PAUSGS gauge · Pennsylvania · 37 ft³/s72°F11 mi15 hrs ago
- Neshaminy Creek near Langhorne, PAUSGS gauge · Pennsylvania · 336 ft³/s74°F11 mi16 hrs ago
- Stony Creek at Sterigere Street at Norristown, PAUSGS gauge · Pennsylvania · 20 ft³/s70°F12 mi15 hrs ago
- Schuylkill River at Norristown, PAUSGS gauge · Pennsylvania · 1,610 ft³/s77°F13 mi15 hrs ago
- Pennypack Cr at Lower Rhawn St Bdg, Phila., PAUSGS gauge · Pennsylvania · 53 ft³/s73°F14 mi15 hrs ago
- Wissahickon Creek at Mouth, Philadelphia, PAUSGS gauge · Pennsylvania · 96 ft³/s71°F15 mi15 hrs ago
- Poquessing Creek at Grant Ave. at Philadelphia, PAUSGS gauge · Pennsylvania · 11 ft³/s72°F15 mi15 hrs ago
Nearest swimmable spots
Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.
Lake Galena
Reservoir with an 8-mi. perimeter, edged by park & hiking, biking & equestrian trails.
6.3 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.
16 mi from your location
4.5(1,090)Palmyra Cove Nature Park
250-acre riverfront park features ponds, trails & scenic viewpoints, plus an environmental center.
17 mi from your location
4.5(201)Lake Towhee Park
Tranquil natural area offering picnicking, boating, fishing, hiking, a playground & a ball field.
18 mi from your location
4.7(1,283)Race Street Pier
Waterfront promenade with a lawn & soaring bridge views drawing joggers, sunbathers & picnickers.
19 mi from your location
4.8(1,846)Schuylkill River Park
This park runs along the river & offers a playground, paved paths, sports areas, a pool & a dog run.
19 mi from your location
4.7(560)Green Lane Reservoir
Located on a reservoir, this area offers non-motorized & electric-powered boat use & hiking trails.
21 mi from your location
4.6(1,160)Cooper River Park
Boat launch, picnic areas, mini-golf, bike paths & athletic fields in a scenic, riverside setting.
22 mi from your location
4.5(405)Strawbridge Lake Park
70-acre park featuring an artificial lake with boat launches, a playground, picnic tables & more.
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.

