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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 (14 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. ISINGLASS R AT ROCHESTER NECK RD, NR DOVER, NHUSGS gauge · New Hampshire · 4 ft³/s
    64°F33 mi14 hrs ago
  2. LAMPREY RIVER AT LANGFORD ROAD, AT RAYMOND, NHUSGS gauge · New Hampshire · 7 ft³/s
    71°F51 mi14 hrs ago
  3. MERRIMACK R ESTUARY US OF SHAD CRK, SALISBURY, MAUSGS gauge · Massachusetts
    63°F53 mi15 hrs ago
  4. SACO RIVER AT RIVER STREET, AT BARTLETT, NHUSGS gauge · New Hampshire · 61 ft³/s
    60°F57 mi14 hrs ago
  5. Wild River at Gilead, MaineUSGS gauge · Maine · 26 ft³/s
    65°F65 mi14 hrs ago
  6. SOUTH BRANCH PISCATAQUOG RIVER NEAR GOFFSTOWN, NHUSGS gauge · New Hampshire · 15 ft³/s
    68°F70 mi14 hrs ago
  7. DANVERS RIVER AT BEVERLY PIER AT BEVERLY MAUSGS gauge · Massachusetts
    62°F72 mi15 hrs ago
  8. SOUHEGAN RIVER (SITE WLR-1) NEAR MILFORD, NHUSGS gauge · New Hampshire · 33 ft³/s
    69°F80 mi14 hrs ago

Nearest swimmable spots

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

Sebago Lake4.8(191)

Sebago Lake

Lake · Maine

Large lake & recreation area offering fishing, boating, campgrounds, trails & beaches.

23 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.