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The Water Around Us
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Live · updated daily from USGS

Swimmable water near you

1,573 USGS sensors are reporting a live water temperature right now, the newest reading from August 22, 2026 (23 hrs ago).

Clear location
  • Cold · below 60°F · 263
  • Cool · 60–69°F · 481
  • Comfortable · 70–86°F · 699
  • Warm · above 86°F · 130
  • 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. CHEYENNE RIVER AT RED SHIRT, SDUSGS gauge · South Dakota · 46 ft³/s
    74°F32 mi23 hrs ago
  2. Niobrara River at Agate, Nebr.USGS gauge · Nebraska
    70°F93 mi1 day ago
  3. Niobrara River near Sparks, Nebr.USGS gauge · Nebraska · 651 ft³/s
    72°F169 mi23 hrs ago
  4. Tongue River at Tongue R Dam nr Decker MTUSGS gauge · Montana · 211 ft³/s
    71°F187 mi1 day ago
  5. Dismal River near Thedford, Nebr.USGS gauge · Nebraska · 253 ft³/s
    66°F204 mi23 hrs ago
  6. CACHE LA POUDRE R ABV N 11TH AVE AT GREELEY, COUSGS gauge · Colorado
    74°F237 mi1 day ago
  7. CACHE LA POUDRE RIVER BELOW HWY 85 AT GREELEY, COUSGS gauge · Colorado
    72°F238 mi1 day ago
  8. FIVEMILE CREEK NEAR SHOSHONI, WYUSGS gauge · Wyoming · 272 ft³/s
    67°F238 mi1 day ago

Nearest swimmable spots

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

Sylvan Lake4.8(692)

Sylvan Lake

Lake · East Custer, South Dakota
Camping nearby

Tranquil lake area for swimming, canoeing, hiking, picnicking & rock climbing on large outcroppings.

6.4 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.