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The Water Around Us
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Live · updated daily from USGS

Swimmable water near you

2,133 USGS sensors are reporting a live water temperature right now, the newest reading from August 22, 2026 (21 hrs ago).

Clear location
  • Cold · below 60°F · 382
  • Cool · 60–69°F · 607
  • Comfortable · 70–86°F · 929
  • 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. ST JONES RIVER AT DOVER, DEUSGS gauge · Delaware · 50 ft³/s
    81°F7.4 mi1 day ago
  2. Cohansey River at Greenwich NJUSGS gauge · New Jersey
    81°F10 mi21 hrs ago
  3. APPOQUINIMINK RIVER NEAR ODESSA, DEUSGS gauge · Delaware
    80°F16 mi1 day ago
  4. MURDERKILL RIVER AT FREDERICA, DEUSGS gauge · Delaware
    81°F17 mi1 day ago
  5. Delaware River at Reedy Island Jetty, DEUSGS gauge · Delaware
    82°F18 mi1 day ago
  6. SILVER LAKE TRIBUTARY AT MIDDLETOWN, DEUSGS gauge · Delaware · 4 ft³/s
    67°F18 mi1 day ago
  7. C AND D CANAL NR DELAWARE CITY, DEUSGS gauge · Delaware · 14,400 ft³/s
    83°F22 mi1 day ago
  8. Maurice River at Bivalve NJUSGS gauge · New Jersey
    80°F23 mi21 hrs ago

Nearest swimmable spots

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

Silver Lake Park4.4(959)

Silver Lake Park

Park · Dover, Delaware

182 acres of woodsy green space with walking trails, a playground, picnic shelters & water access.

7.2 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.