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The Water Around Us
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Live · updated daily from USGS

Swimmable water near you

2,137 USGS sensors are reporting a live water temperature right now, the newest reading from August 21, 2026 (11 hrs ago).

Clear location
  • Cold · below 60°F · 375
  • Cool · 60–69°F · 595
  • Comfortable · 70–86°F · 938
  • Warm · above 86°F · 229
  • 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. Alum Creek at Africa OHUSGS gauge · Ohio · 8 ft³/s
    77°F3.3 mi12 hrs ago
  2. Big Walnut Creek at Sunbury OHUSGS gauge · Ohio · 286 ft³/s
    71°F6.3 mi11 hrs ago
  3. Hoover Reservoir at Central College OHUSGS gauge · Ohio
    79°F9.6 mi11 hrs ago
  4. Scioto R. at O'Shaughnessy Dam near Dublin OHUSGS gauge · Ohio
    72°F9.8 mi12 hrs ago
  5. Griggs Reservoir at Columbus OHUSGS gauge · Ohio
    73°F16 mi11 hrs ago
  6. Scioto River near Prospect OHUSGS gauge · Ohio · 2,370 ft³/s
    73°F18 mi12 hrs ago
  7. Clover Groff Ditch below Alton OHUSGS gauge · Ohio · 134 ft³/s
    75°F23 mi12 hrs ago
  8. Raccoon Creek near Granville OHUSGS gauge · Ohio · 580 ft³/s
    70°F25 mi12 hrs ago

Nearest swimmable spots

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

Mirror Lake4.6(39)

Mirror Lake

Lake · Columbus, Ohio
Camping nearby

Surrounded by woods, this celebrated lake is a popular destination for outdoor recreation & picnics.

16 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.