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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 22, 2026 (14 hrs ago).

Clear location
  • 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.

  1. DUNGENESS RIVER NEAR SEQUIM, WAUSGS gauge · Washington · 84 ft³/s
    56°F23 mi15 hrs ago
  2. DUWAMISH RIVER AT GOLF COURSE AT TUKWILA, WAUSGS gauge · Washington · 607 ft³/s
    68°F34 mi15 hrs ago
  3. CEDAR RIVER AT RENTON, WAUSGS gauge · Washington · 120 ft³/s
    62°F36 mi15 hrs ago
  4. SULTAN RIVER BELOW POWERPLANT NEAR SULTAN, WAUSGS gauge · Washington · 330 ft³/s
    57°F40 mi15 hrs ago
  5. NF SKOKOMISH R BL STAIRCASE RPDS NR HOODSPORT, WAUSGS gauge · Washington · 37 ft³/s
    53°F40 mi15 hrs ago
  6. SULTAN RIVER BELOW DIVERSION DAM NEAR SULTAN, WAUSGS gauge · Washington · 108 ft³/s
    55°F41 mi15 hrs ago
  7. SKAGIT RIVER NEAR MOUNT VERNON, WAUSGS gauge · Washington · 6,640 ft³/s
    64°F41 mi15 hrs ago
  8. TOLT RIVER NEAR CARNATION, WAUSGS gauge · Washington · 111 ft³/s
    57°F42 mi15 hrs ago

Nearest swimmable spots

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

Rocky Brook Falls4.8(1,201)

Rocky Brook Falls

Tourist attraction · Brinnon, Washington

A stunning 200-foot horsetail waterfall cascading from a hanging valley on Washington's Olympic Peninsula near Hood Canal. The walk to the falls is remarkably easy — just 0.1-0.25 miles roundtrip along a flat trail following Rocky Brook Creek, making it accessible for families with young children. A swimming hole at the base is popular on warm summer days. Free parking, no passes required. The waterfall flow is strongest during heavy rain and spring snowmelt.

17 mi from your location

Green Lake4.7(51)

Green Lake

Lake · Seattle, Washington
Dog-friendly

Freshwater lake offers swimming beaches, fishing sites, boat ramps & a recreational path.

21 mi from your location

Green Lake Park4.7(9,945)

Green Lake Park

Tourist attraction · Seattle, Washington

Recreation area with trails, beach & boathouse, plus tennis courts, baseball fields & indoor pool.

21 mi from your location

Lake Union4.8(189)

Lake Union

Lake · Seattle, Washington
Dog-friendly

Picturesque freshwater lake providing a popular boating spot & an annual wooden boat festival.

23 mi from your location

Lake Union Park4.6(4,691)

Lake Union Park

Tourist attraction · Seattle, Washington
Dog-friendly

12-acre lakefront park with boat launch, model-boat pond, Center for Wooden Boats & spray features.

24 mi from your location

Westlake Park4.2(2,054)

Westlake Park

Tourist attraction · Seattle, Washington
Dog-friendly

Centrally located shopping district sitting spot & town square with a play area & fountain.

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.