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 (15 hrs ago).
- 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.
- 77°F6.9 mi15 hrs ago
- 84°F17 mi16 hrs ago
- GRAND CALUMET RIVER AT COLUMBIA AV AT HAMMOND, INUSGS gauge · Indiana · 33 ft³/s71°F20 mi16 hrs ago
- DES PLAINES RIVER AT ROUTE 53 AT JOLIET, ILUSGS gauge · Illinois · 4,130 ft³/s75°F23 mi15 hrs ago
- DES PLAINES RIVER AT ROCKDALE, ILUSGS gauge · Illinois77°F25 mi16 hrs ago
- HART DITCH AT DYER, INUSGS gauge · Indiana · 51 ft³/s73°F25 mi16 hrs ago
- 71°F27 mi15 hrs ago
- DEEP RIVER NEAR LIVERPOOL, INUSGS gauge · Indiana75°F31 mi15 hrs ago
Nearest swimmable spots
Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.
4.8(20,843)Riverwalk
Riverside pedestrian path featuring city views & dining, plus bridges, fishing piers & boat docks.
11 mi from your location
4.6(858)River Park
Park with a water playground, pool & sports facilities plus fishing, wildlife & a canoe launch.
13 mi from your location
4.7(1,286)Lake Park
Charming 76-acre park on the banks of Lake Opeka known for its fishing, boating & golf.
15 mi from your location
4.7(436)Whalon Lake
Nature park featuring a quarry lake, prairie & wetlands, plus fishing, boating, trails & a dog park.
16 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.



