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The Water Around Us
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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 (17 hrs ago).

Clear location
  • 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.

  1. Big Walnut Creek at Sunbury OHUSGS gauge · Ohio · 286 ft³/s
    71°F22 mi18 hrs ago
  2. Scioto River near Prospect OHUSGS gauge · Ohio · 2,370 ft³/s
    73°F22 mi18 hrs ago
  3. Alum Creek at Africa OHUSGS gauge · Ohio · 8 ft³/s
    77°F27 mi18 hrs ago
  4. Hoover Reservoir at Central College OHUSGS gauge · Ohio
    79°F31 mi18 hrs ago
  5. Scioto R. at O'Shaughnessy Dam near Dublin OHUSGS gauge · Ohio
    72°F32 mi18 hrs ago
  6. Raccoon Creek near Granville OHUSGS gauge · Ohio · 580 ft³/s
    70°F36 mi18 hrs ago
  7. Griggs Reservoir at Columbus OHUSGS gauge · Ohio
    73°F40 mi18 hrs ago
  8. Clover Groff Ditch below Alton OHUSGS gauge · Ohio · 134 ft³/s
    75°F46 mi18 hrs ago

Nearest swimmable spots

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

North Lake Park4.1(571)

North Lake Park

State park · Mansfield, Ohio

Cozy park adjacent to a paved rail corridor featuring a fishing lake, playground & picnic areas.

21 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.