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The Water Around Us
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Live · updated daily from USGS

Swimmable water near you

2,140 USGS sensors are reporting a live water temperature right now, the newest reading from August 22, 2026 (3 hrs ago).

Clear location
  • Cold · below 60°F · 384
  • 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. SACO RIVER AT RIVER STREET, AT BARTLETT, NHUSGS gauge · New Hampshire · 61 ft³/s
    60°F51 mi1 day ago
  2. Wild River at Gilead, MaineUSGS gauge · Maine · 23 ft³/s
    65°F51 mi3 hrs ago
  3. ISINGLASS R AT ROCHESTER NECK RD, NR DOVER, NHUSGS gauge · New Hampshire · 4 ft³/s
    64°F51 mi1 day ago
  4. LAMPREY RIVER AT LANGFORD ROAD, AT RAYMOND, NHUSGS gauge · New Hampshire · 7 ft³/s
    71°F69 mi1 day ago
  5. MERRIMACK R ESTUARY US OF SHAD CRK, SALISBURY, MAUSGS gauge · Massachusetts
    63°F74 mi1 day ago
  6. SOUTH BRANCH PISCATAQUOG RIVER NEAR GOFFSTOWN, NHUSGS gauge · New Hampshire · 15 ft³/s
    68°F86 mi1 day ago
  7. CONNECTICUT RIVER AT NORTH STRATFORD, NHUSGS gauge · New Hampshire · 501 ft³/s
    63°F91 mi1 day ago
  8. DANVERS RIVER AT BEVERLY PIER AT BEVERLY MAUSGS gauge · Massachusetts
    62°F93 mi1 day 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.

12 mi from your location

Long Lake4.8(110)

Long Lake

Lake · Maine
Camping nearby

This 11-mile-long glacial lake features fishing, boating, loons & other wildlife.

22 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.