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Live · updated daily from USGS

Swimmable water near you

2,141 USGS sensors are reporting a live water temperature right now, the newest reading from August 22, 2026 (1 hr ago).

Clear location
  • Cold · below 60°F · 385
  • Cool · 60–69°F · 607
  • Comfortable · 70–86°F · 934
  • 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. MILLSBORO POND OUTLET AT MILLSBORO, DEUSGS gauge · Delaware · 52 ft³/s
    82°F18 mi1 day ago
  2. BUCKS BRANCH DS OF CONRAIL RD AT CANNON, DEUSGS gauge · Delaware
    71°F24 mi1 day ago
  3. MASSEY DITCH AT MASSEY LANDING, DEUSGS gauge · Delaware
    78°F26 mi1 day ago
  4. BROADKILL RIVER NEAR MILTON, DEUSGS gauge · Delaware
    82°F32 mi1 day ago
  5. BEAVERDAM BRANCH AT HOUSTON, DEUSGS gauge · Delaware · 13 ft³/s
    71°F38 mi1 day ago
  6. MURDERKILL RIVER AT FREDERICA, DEUSGS gauge · Delaware
    81°F45 mi1 day ago
  7. CHOPTANK RIVER NEAR GREENSBORO, MDUSGS gauge · Maryland · 46 ft³/s
    76°F48 mi1 day ago
  8. Cape May Harbor at Cape May NJUSGS gauge · New Jersey
    75°F51 mi1 hr ago

Nearest swimmable spots

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

Trap Pond State Park4.7(1,519)

Trap Pond State Park

State park · Laurel, Delaware
Camping nearby

Wetland forest with cypress trees features a nature center, trails & a pond for boating & fishing.

12 mi from your location

Ocean City Beach4.7(1,397)

Ocean City Beach

Beach · Ocean City, Maryland

Extensive, 10-mile-long public beach with water sports, a boardwalk & an amusement park.

21 mi from your location

Fenwick Island State Park4.7(2,251)

Fenwick Island State Park

State park · Fenwick Island, Delaware

344 acres of shoreline on a barrier island featuring swimming areas & designated surfing spots.

23 mi from your location

Bethany Beach Boardwalk4.7(3,218)

Bethany Beach Boardwalk

Tourist attraction · Bethany Beach, Delaware

This wooden boardwalk lined with charming clapboard houses goes past a plaza with a bandstand.

25 mi from your location

Bethany Beach4.7(98)

Bethany Beach

Beach · Delaware

Relaxed, sandy town beach featuring a wooden boardwalk lined with shops & eateries.

25 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.