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 (9 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.
- ACCOTINK CREEK AT KEENE MILL RD AT SPRINGFIELD, VAUSGS gauge · Virginia · 11 ft³/s77°F8.8 mi9 hrs ago
- ACCOTINK CREEK NEAR ANNANDALE, VAUSGS gauge · Virginia · 5 ft³/s75°F11 mi9 hrs ago
- LONG BRANCH NEAR ANNANDALE, VAUSGS gauge · Virginia · 1 ft³/s72°F11 mi9 hrs ago
- LONG BRANCH AT OLLEY LANE NR FAIRFAX, VAUSGS gauge · Virginia · 0 ft³/s73°F12 mi9 hrs ago
- DIFFICULT RUN ABOVE FOX LAKE NEAR FAIRFAX, VAUSGS gauge · Virginia · 2 ft³/s71°F17 mi9 hrs ago
- S F LITTLE DIFFICULT RUN ABOVE MOUTH NR VIENNA, VAUSGS gauge · Virginia · 0 ft³/s71°F19 mi10 hrs ago
- Anacostia River nr Buzzard Point at Washington, DCUSGS gauge · 2,000 ft³/s83°F19 mi1 day ago
- FLATLICK BRANCH ABOVE FROG BRANCH AT CHANTILLY, VAUSGS gauge · Virginia · 1 ft³/s72°F19 mi10 hrs ago
Nearest swimmable spots
Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.
Burke Lake
Wooded park around a dam with boat rentals & fishing spots, plus hiking on a lakeside loop trail.
8.6 mi from your location
4.7(4,612)Burke Lake Park
County recreational park featuring a fishing lake, picnic areas, a miniature train & playgrounds.
8.7 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.
11 mi from your location
4.4(635)Smith Lake Park
Full-service campsite with pavilions, a swimming pool, fishing piers & a boat launch on the lake.
14 mi from your location
4.7(2,458)National Harbor
Development along the Potomac River featuring a large Ferris wheel, restaurants, shopping & events.
15 mi from your location
4.5(120)Lake Anne
This tree-lined reservoir in a residential area offers boating, a promenade & waterfront eateries.
23 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.

