Live · updated daily from USGS
Swimmable water near you
1,325 USGS sensors are reporting a live water temperature right now, the newest reading from August 23, 2026 (4 hrs ago).
- Cold · below 60°F · 218
- Cool · 60–69°F · 484
- Comfortable · 70–86°F · 545
- Warm · above 86°F · 78
- 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.
- CEDAR RIVER AT RENTON, WAUSGS gauge · Washington · 122 ft³/s60°F12 mi4 hrs ago
- DUWAMISH RIVER AT GOLF COURSE AT TUKWILA, WAUSGS gauge · Washington · 604 ft³/s66°F12 mi4 hrs ago
- TOLT RIVER NEAR CARNATION, WAUSGS gauge · Washington · 111 ft³/s55°F17 mi4 hrs ago
- SF TOLT RIVER BL REGULATING BASIN NR CARNATION, WAUSGS gauge · Washington · 69 ft³/s54°F19 mi5 hrs ago
- NORTH FORK TOLT RIVER NEAR CARNATION, WAUSGS gauge · Washington54°F19 mi4 hrs ago
- CEDAR RIVER NEAR LANDSBURG, WAUSGS gauge · Washington · 246 ft³/s53°F21 mi4 hrs ago
- CEDAR RIVER BELOW DIVERSION NEAR LANDSBURG, WAUSGS gauge · Washington · 91 ft³/s54°F21 mi4 hrs ago
- NF TOLT RIVER ABOVE YELLOW CREEK NR CARNATION, WAUSGS gauge · Washington · 21 ft³/s53°F21 mi4 hrs ago
Nearest swimmable spots
Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.
4.7(270)Lake Washington
The 2nd largest natural lake in Washington, this lake provides sport fishing opportunities.
3.6 mi from your location
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4.7(143)Lake Sammamish
Parkland surrounds this freshwater lake with boating, waterskiing, picnic shelters & hiking trails.
5.6 mi from your location
4.8(189)Lake Union
Picturesque freshwater lake providing a popular boating spot & an annual wooden boat festival.
6.7 mi from your location
4.7(9,945)Green Lake Park
Recreation area with trails, beach & boathouse, plus tennis courts, baseball fields & indoor pool.
6.8 mi from your location
4.6(4,691)Lake Union Park
12-acre lakefront park with boat launch, model-boat pond, Center for Wooden Boats & spray features.
7.0 mi from your location
4.7(357)Lake Washington Boulevard Park
This 117-mile lakefront area is known for its bicycle trail & fishing opportunities.
7.1 mi from your location
4.7(51)Green Lake
Freshwater lake offers swimming beaches, fishing sites, boat ramps & a recreational path.
7.1 mi from your location
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4.2(2,054)Westlake Park
Centrally located shopping district sitting spot & town square with a play area & fountain.
7.4 mi from your location
4.7(5,044)Lake Sammamish State Park
512-acre park with ample waterfront access & boat launch, plus seasonal kayak rentals & picnicking.
8.8 mi from your location
4.5(153)Angle Lake
Site for year-round fishing, with a shoreline park offering a boat launch, picnic areas & swimming.
16 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.