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Live · updated daily from USGS

Swimmable water near you

2,136 USGS sensors are reporting a live water temperature right now, the newest reading from August 22, 2026 (7 hrs ago).

Clear location
  • Cold · below 60°F · 384
  • Cool · 60–69°F · 607
  • Comfortable · 70–86°F · 930
  • 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. LAKE MARION NEAR PINEVILLE, SCUSGS gauge · South Carolina
    88°F14 mi7 hrs ago
  2. SANTEE RIVER NEAR PINEVILLE, SCUSGS gauge · South Carolina · 670 ft³/s
    87°F15 mi8 hrs ago
  3. SANTEE RIVER NEAR RUSSELLVILLE, SCUSGS gauge · South Carolina · 777 ft³/s
    87°F23 mi8 hrs ago
  4. REDIV. INTAKE CANAL NR ST. STEPHEN, SCUSGS gauge · South Carolina
    90°F26 mi8 hrs ago
  5. REDIV CANAL AT SANTEE RIVER NR ST STEPHEN, SCUSGS gauge · South Carolina · 169 ft³/s
    89°F27 mi7 hrs ago
  6. LAKE MOULTRIE TAILRACE CANAL AT MONCKS CORNER, SCUSGS gauge · South Carolina · 191 ft³/s
    86°F33 mi8 hrs ago
  7. W BRANCH COOPER R AT PIMLICO NR MONCKS CORNER, SCUSGS gauge · South Carolina
    87°F41 mi8 hrs ago
  8. BACK RIVER AT DUPONT INTAKE NR KITTREDGE, SCUSGS gauge · South Carolina
    87°F43 mi8 hrs ago

Nearest swimmable spots

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

Lake Marion4.7(331)

Lake Marion

Lake · South Carolina

The state's largest, this stunning lake offers fishing, camping & boating, plus a range of wildlife.

7.6 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.