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 (12 hrs ago).
- 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.
- FISHTRAP CREEK AT FRONT STREET AT LYNDEN, WAUSGS gauge · Washington · 4 ft³/s61°F4.3 mi13 hrs ago
- 63°F5.4 mi12 hrs ago
- NOOKSACK RIVER AT NORTH CEDARVILLE, WAUSGS gauge · Washington · 1,150 ft³/s61°F6.6 mi12 hrs ago
- NOOKSACK RIVER AT FERNDALE, WAUSGS gauge · Washington · 1,150 ft³/s64°F8.3 mi12 hrs ago
- SF NOOKSACK RIVER AT SAXON BRIDGE, WAUSGS gauge · Washington · 77 ft³/s67°F19 mi13 hrs ago
- SKOOKUM CREEK ABOVE DIVERSION NEAR WICKERSHAM, WAUSGS gauge · Washington · 14 ft³/s60°F20 mi12 hrs ago
- NF NOOKSACK RIVER BL CASCADE CREEK NR GLACIER, WAUSGS gauge · Washington · 388 ft³/s53°F26 mi12 hrs ago
- SKAGIT RIVER NEAR MOUNT VERNON, WAUSGS gauge · Washington · 6,640 ft³/s64°F31 mi12 hrs ago
Nearest swimmable spots
Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.
4.6(52)Lake Whatcom
Tranquil lake popular for boating & fishing, with parks offering hiking trails & swimming spots.
12 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.

