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 (19 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.
- Anacostia River nr Buzzard Point at Washington, DCUSGS gauge · 2,000 ft³/s83°F8.8 mi19 hrs ago
- ACCOTINK CREEK AT KEENE MILL RD AT SPRINGFIELD, VAUSGS gauge · Virginia · 72 ft³/s77°F9.1 mi19 hrs ago
- ACCOTINK CREEK NEAR ANNANDALE, VAUSGS gauge · Virginia · 24 ft³/s75°F11 mi19 hrs ago
- LONG BRANCH NEAR ANNANDALE, VAUSGS gauge · Virginia · 2 ft³/s73°F12 mi20 hrs ago
- WATTS BRANCH AT WASHINGTON, DCUSGS gauge · 1 ft³/s73°F12 mi19 hrs ago
- ANACOSTIA RIVER AT KENILWORTH AT WASHINGTON, DCUSGS gauge · 768 ft³/s80°F13 mi19 hrs ago
- HICKEY RUN AT NATIONAL ARBORETUM AT WASHINGTON, DCUSGS gauge · 1 ft³/s77°F13 mi19 hrs ago
- LONG BRANCH AT OLLEY LANE NR FAIRFAX, VAUSGS gauge · Virginia · 0 ft³/s73°F14 mi19 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(2,458)National Harbor
Development along the Potomac River featuring a large Ferris wheel, restaurants, shopping & events.
3.3 mi from your location
4.7(16)Lake Braddock
A 19-acre lake in a residential area featuring a paved walking trail with water views.
13 mi from your location
4.6(121)Burke Lake
Wooded park around a dam with boat rentals & fishing spots, plus hiking on a lakeside loop trail.
14 mi from your location
4.7(4,612)Burke Lake Park
County recreational park featuring a fishing lake, picnic areas, a miniature train & playgrounds.
14 mi from your location
4.4(219)Riverdale Community Park
Large park with a range of athletic fields & courts plus a trail, playground & recreation center.
17 mi from your location
4.7(324)Patuxent River Park - Jug Bay Natural Area
This 7,000-acre park offers a variety of trails & water activities, plus a rural-history museum.
18 mi from your location
4.8(261)Lake Artemesia
Reservoir covering 38 acres, with fishing piers, aquatic gardens & trails in the surrounding area.
18 mi from your location
4.7(1,760)Buddy Attick Lake Park
Named after the city's first policeman, this lake-centered park offers picnic areas & nature trails.
20 mi from your location
4.8(13,185)Great Falls Park
Boasting spectacular falls & rushing white water, this park offers picnic areas, trails & boating.
21 mi from your location
4.7(573)Great Falls
Stretch of powerful rapids & waterfalls on the Potomac River, with hiking trails nearby.
21 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.