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 (18 hrs ago).
- 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.
- SF KOYUKUK R NR COLDFOOT AKUSGS gauge · Alaska49°F57 mi18 hrs ago
- LIVENGOOD C AT LIVENGOOD AKUSGS gauge · Alaska · 23 ft³/s42°F57 mi19 hrs ago
- TOLOVANA R BL ROSEBUD C NR LIVENGOOD AKUSGS gauge · Alaska · 242 ft³/s49°F60 mi19 hrs ago
- SLATE C AT COLDFOOT AKUSGS gauge · Alaska · 191 ft³/s44°F71 mi19 hrs ago
- TANANA R AT NENANA AKUSGS gauge · Alaska · 56,700 ft³/s56°F119 mi19 hrs ago
- CHENA R NR TWO RIVERS AKUSGS gauge · Alaska · 959 ft³/s49°F129 mi19 hrs ago
- SALCHA R NR SALCHAKET AKUSGS gauge · Alaska · 1,830 ft³/s55°F144 mi19 hrs ago
- BIRCH C NR CIRCLE AKUSGS gauge · Alaska · 1,650 ft³/s55°F147 mi19 hrs ago
Nearest swimmable spots
Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.
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.