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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 (17 hrs ago).

Clear location
  • 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.

  1. Patuxent R at Gov Bridge Natural Area nr Bowie MDUSGS gauge · Maryland
    75°F15 mi17 hrs ago
  2. NORTHEAST BRANCH ANACOSTIA RIVER AT RIVERDALE, MDUSGS gauge · Maryland · 69 ft³/s
    74°F27 mi17 hrs ago
  3. FOSTER BRANCH NEAR JOPPATOWNE, MDUSGS gauge · Maryland · 1 ft³/s
    70°F28 mi17 hrs ago
  4. NORTHWEST BRANCH ANACOSTIA RIVER AT BRENTWOOD, MDUSGS gauge · Maryland · 77 ft³/s
    74°F29 mi17 hrs ago
  5. WATTS BRANCH AT WASHINGTON, DCUSGS gauge · 1 ft³/s
    73°F29 mi17 hrs ago
  6. PAINT BRANCH NEAR COLLEGE PARK, MDUSGS gauge · Maryland · 13 ft³/s
    72°F29 mi17 hrs ago
  7. ANACOSTIA RIVER AT KENILWORTH AT WASHINGTON, DCUSGS gauge · 768 ft³/s
    80°F29 mi17 hrs ago
  8. HICKEY RUN AT NATIONAL ARBORETUM AT WASHINGTON, DCUSGS gauge · 1 ft³/s
    77°F30 mi17 hrs ago

Nearest swimmable spots

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

Lake Waterford Park4.6(1,610)

Lake Waterford Park

Park · Severna Park, Maryland

County park with a lake, offering recreational & natural areas, plus an accessible playing field.

9.9 mi from your location

Rocky Point Park and Beach4.3(2,055)

Rocky Point Park and Beach

Park · Essex, Maryland
Camping nearby

On 375 acres on the Back & Middle Rivers, this park offers swimming, boating, fishing & picnicking.

17 mi from your location

Patuxent River Park - Jug Bay Natural Area4.7(324)

Patuxent River Park - Jug Bay Natural Area

Nature preserve · Upper Marlboro, Maryland
Camping nearby

This 7,000-acre park offers a variety of trails & water activities, plus a rural-history museum.

22 mi from your location

Buddy Attick Lake Park4.7(1,760)

Buddy Attick Lake Park

Park · Greenbelt, Maryland

Named after the city's first policeman, this lake-centered park offers picnic areas & nature trails.

25 mi from your location

Gunpowder Falls State Park Hammerman Area4.5(3,496)

Gunpowder Falls State Park Hammerman Area

State park · Middle River, Maryland

Gunpowder River hub for picnics & kayaking, with rentable picnic shelters, fishing & swimming.

25 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.