Skip to content
The Water Around Us
Sign In

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 22, 2026 (14 hrs ago).

Clear location
  • Cold · below 60°F · 384
  • 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. COYOTE C NR MADRONE CAUSGS gauge · California · 11 ft³/s
    70°F11 mi1 day ago
  2. ARROYO HONDO NR SAN JOSE CAUSGS gauge · California · 1 ft³/s
    65°F31 mi1 day ago
  3. ALAMEDA C AB DIV DAM NR SUNOL CAUSGS gauge · California · 0 ft³/s
    64°F33 mi1 day ago
  4. ALAMEDA C BL DIV DAM NR SUNOL CAUSGS gauge · California · 0 ft³/s
    67°F34 mi1 day ago
  5. SAN JOAQUIN R AB MERCED R NR NEWMAN CAUSGS gauge · California · 110 ft³/s
    75°F34 mi1 day ago
  6. COYOTE C AB HWY 237 A MILPITAS CAUSGS gauge · California · 8 ft³/s
    69°F34 mi1 day ago
  7. MUD SLOUGH NR GUSTINE CAUSGS gauge · California · 7 ft³/s
    77°F35 mi1 day ago
  8. CALAVERAS C NR SUNOL CAUSGS gauge · California · 7 ft³/s
    56°F35 mi1 day ago

Nearest swimmable spots

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

Manresa Uplands State Beach & Campground4.5(388)

Manresa Uplands State Beach & Campground

Public beach · Watsonville, California
Camping nearby

Seasonal walk-in tent sites with nearby beach access, flush toilets & coin-operated showers.

22 mi from your location

Sunset State Beach Campground4.2(174)

Sunset State Beach Campground

Public beach · Watsonville, California
Camping nearby

Tranquil beach campground providing tent & RV sites, picnic spots & ocean fishing with a permit.

23 mi from your location

Manresa Main State Beach4.7(1,475)

Manresa Main State Beach

Beach · Watsonville, California
Camping nearby

Sandy stretch with unpredictable weather that's popular for surf fishing, surfing & sunsets.

23 mi from your location

Sunset State Beach4.7(2,850)

Sunset State Beach

Public beach · Watsonville, California
Camping nearby

Beach surrounded by steep sand dunes offering picnic areas & campsites, plus bay & mountain views.

23 mi from your location

Hidden Beach4.8(27)

Hidden Beach

Beach · Rio Del Mar, California
Camping nearby

Pacific front sandy beach in a sheltered cove with a neighborhood park, benches & playground.

23 mi from your location

Seacliff State Beach4.6(4,777)

Seacliff State Beach

Public beach · Seacliff, California
Camping nearby

Versatile state beach offers a variety of outdoor activities such as camping & hiking.

24 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.