Live · updated daily from USGS
Swimmable water near you
2,137 USGS sensors are reporting a live water temperature right now, the newest reading from August 21, 2026 (9 hrs ago).
- Cold · below 60°F · 375
- Cool · 60–69°F · 595
- Comfortable · 70–86°F · 938
- Warm · above 86°F · 229
- 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.
- SANTA MARGARITA R NR TEMECULA CAUSGS gauge · California · 3 ft³/s76°F18 mi9 hrs ago
- DEEP C NR HESPERIA CAUSGS gauge · California · 0 ft³/s79°F47 mi9 hrs ago
- TECOLOTE C AB FOOTBRIDGE NR SAN DIEGO CAUSGS gauge · California · 0 ft³/s68°F61 mi9 hrs ago
- MOJAVE R A LO NARROWS NR VICTORVILLE CAUSGS gauge · California · 4 ft³/s72°F62 mi9 hrs ago
- CRIR LWR MAIN DRAIN BLW TYSON WW, NR EHRENBERG, AZUSGS gauge · Arizona · 122 ft³/s70°F163 mi9 hrs ago
- HILTON CYN C 0.25 MI BL BRADBURY DAM NR SANTA YNEZUSGS gauge · California · 6 ft³/s60°F164 mi9 hrs ago
- SANTA YNEZ R NR SANTA YNEZ CAUSGS gauge · California62°F164 mi9 hrs ago
- 85°F165 mi9 hrs ago
Nearest swimmable spots
Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.
4.2(1,217)Elm Grove Beach
Public outdoor area with sand along Lake Elsinore, with shaded picnic tables & BBQ grills.
0.3 mi from your location
4.7(891)T-Street Beach
Tall palm trees line this sandy beach & popular surfing destination with a long pier.
24 mi from your location
4.8(6,871)San Clemente Pier
This long wooden pier extends into the ocean for sweeping views of the ocean & shoreline.
24 mi from your location
4.6(1,585)San Clemente State Beach
State park featuring a mile-long beach, picnic areas & campsites, plus biking & hiking trails.
24 mi from your location
4.7(1,706)Calafia Beach Park
Picturesque beachfront park providing swimming, surfing & open recreational space with bluff views.
24 mi from your location
4.6(182)Riviera
Wide sandy public beach known for surfing, accessed by way of a seafront pedestrian beach trail.
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.