Live · updated daily from USGS
Swimmable water near you
2,136 USGS sensors are reporting a live water temperature right now, the newest reading from August 22, 2026 (7 hrs ago).
- Cold · below 60°F · 384
- Cool · 60–69°F · 607
- Comfortable · 70–86°F · 930
- 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.
- FLATLICK BRANCH ABOVE FROG BRANCH AT CHANTILLY, VAUSGS gauge · Virginia · 1 ft³/s72°F13 mi8 hrs ago
- DIFFICULT RUN ABOVE FOX LAKE NEAR FAIRFAX, VAUSGS gauge · Virginia · 2 ft³/s71°F18 mi8 hrs ago
- S F LITTLE DIFFICULT RUN ABOVE MOUTH NR VIENNA, VAUSGS gauge · Virginia · 0 ft³/s71°F18 mi8 hrs ago
- SNAKEDEN BRANCH ABOVE LAKE AUDUBON AT RESTON, VAUSGS gauge · Virginia · 0 ft³/s70°F19 mi8 hrs ago
- THE GLADE NEAR HOWLAND DRIVE AT RESTON, VAUSGS gauge · Virginia · 0 ft³/s68°F19 mi7 hrs ago
- LONG BRANCH AT OLLEY LANE NR FAIRFAX, VAUSGS gauge · Virginia · 0 ft³/s73°F22 mi7 hrs ago
- LONG BRANCH NEAR ANNANDALE, VAUSGS gauge · Virginia · 1 ft³/s72°F23 mi7 hrs ago
- ACCOTINK CREEK NEAR ANNANDALE, VAUSGS gauge · Virginia · 5 ft³/s75°F24 mi7 hrs ago
Nearest swimmable spots
Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.
4.5(120)Lake Anne
This tree-lined reservoir in a residential area offers boating, a promenade & waterfront eateries.
20 mi from your location
4.7(4,612)Burke Lake Park
County recreational park featuring a fishing lake, picnic areas, a miniature train & playgrounds.
20 mi from your location
Burke Lake
Wooded park around a dam with boat rentals & fishing spots, plus hiking on a lakeside loop trail.
21 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.
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.

