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The Water Around Us
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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).

Clear location
  • 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.

  1. Patuxent R at Gov Bridge Natural Area nr Bowie MDUSGS gauge · Maryland
    75°F41 mi9 hrs ago
  2. WATTS BRANCH AT WASHINGTON, DCUSGS gauge · 1 ft³/s
    73°F44 mi9 hrs ago
  3. Anacostia River nr Buzzard Point at Washington, DCUSGS gauge · 2,000 ft³/s
    83°F45 mi9 hrs ago
  4. ANACOSTIA RIVER AT KENILWORTH AT WASHINGTON, DCUSGS gauge · 768 ft³/s
    80°F45 mi9 hrs ago
  5. HICKEY RUN AT NATIONAL ARBORETUM AT WASHINGTON, DCUSGS gauge · 1 ft³/s
    77°F46 mi9 hrs ago
  6. NORTHEAST BRANCH ANACOSTIA RIVER AT RIVERDALE, MDUSGS gauge · Maryland · 69 ft³/s
    74°F47 mi9 hrs ago
  7. NORTHWEST BRANCH ANACOSTIA RIVER AT BRENTWOOD, MDUSGS gauge · Maryland · 77 ft³/s
    74°F48 mi9 hrs ago
  8. ACCOTINK CREEK AT KEENE MILL RD AT SPRINGFIELD, VAUSGS gauge · Virginia · 72 ft³/s
    77°F49 mi9 hrs ago

Nearest swimmable spots

Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.

St. Mary's River State Park4.6(509)

St. Mary's River State Park

State park · Leonardtown, Maryland

Popular destination for lake fishing, hiking, biking, horseback riding & hunting (by permit).

10.0 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.