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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 (19 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. Swatara Creek near Palmyra, PAUSGS gauge · Pennsylvania · 232 ft³/s
    67°F12 mi20 hrs ago
  2. Little Conewago Crk, Gingrich Rd at Upper Lawn PAUSGS gauge · Pennsylvania · 2 ft³/s
    65°F20 mi19 hrs ago
  3. Conewago Creek near Bellaire, PAUSGS gauge · Pennsylvania · 16 ft³/s
    67°F21 mi19 hrs ago
  4. Fishing Creek at Goldsboro, PAUSGS gauge · Pennsylvania · 13 ft³/s
    67°F22 mi20 hrs ago
  5. Conewago Creek near Falmouth, PAUSGS gauge · Pennsylvania · 26 ft³/s
    69°F22 mi20 hrs ago
  6. Hammer Creek at Obie Rd nr Schafferstown, PAUSGS gauge · Pennsylvania · 7 ft³/s
    59°F26 mi20 hrs ago
  7. West Conewago Creek near Manchester, PAUSGS gauge · Pennsylvania · 287 ft³/s
    72°F27 mi20 hrs ago
  8. Codorus Creek near Saginaw, PAUSGS gauge · Pennsylvania · 266 ft³/s
    73°F29 mi19 hrs ago

Nearest swimmable spots

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

Reservoir Park4.4(1,215)

Reservoir Park

City park · Harrisburg, Pennsylvania

Public green space for 150+ years with basketball & tennis courts, a playground & a sprawling lawn.

15 mi from your location

Mt. Gretna Lake & Beach4.5(569)

Mt. Gretna Lake & Beach

Swimming lake · Lebanon, Pennsylvania
Camping nearby

Lakeside park is a go-to for picnics, rope swings, kayaks, a snackbar & group & event rentals.

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.