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The Water Around Us

Live data hub · refreshed daily

The warmest water in every state

Each state’s warmest current reading from USGS real-time water sensors — rivers, lakes, and reservoirs across the country.

Updated October 19, 2026 · 2,052 sensors reporting

  1. #1 · NevadaBIG WARM SPGS NR DUCKWATER, NVWarmest of 12 sensors90°Fas of 18 hrs ago
  2. #2 · CaliforniaHOT C A FLUME NR MAMMOTH LAKES CAWarmest of 106 sensors89°Fas of 19 hrs ago
  3. #3 · ArizonaYUMA MESA OUTLET DRAIN NEAR YUMA, AZWarmest of 18 sensors87°Fas of 18 hrs ago
  4. #4 · FloridaC-8 CANAL UPSTREAM OF S-28 AT NORTH MIAMI, FLWarmest of 127 sensors86°Fas of 1 day ago
  5. #5 · TexasRio Grande at Anzalduas Dam nr Hidalgo, TXWarmest of 67 sensors78°Fas of 18 hrs ago
  6. #6 · GeorgiaMIDDLE RIVER AT FISH HOLE AT PORT WENTWORTH, GAWarmest of 98 sensors77°Fas of 19 hrs ago
  7. #7 · LouisianaCalcasieu River at I-10 at Lake Charles, LAWarmest of 31 sensors76°Fas of 18 hrs ago
  8. #8 · South CarolinaASHLEY RIVER NEAR NORTH CHARLESTON, SCWarmest of 68 sensors76°Fas of 18 hrs ago
  9. #9 · Hawaii3-2153-13 TAMC MW2, Oahu, HIWarmest of 2 sensors75°Fas of 4 days ago
  10. #10 · North CarolinaCATAWBA R AT RR BRIDGE AB NC 73 AT COWANS FORD, NCWarmest of 31 sensors75°Fas of 18 hrs ago
  11. #11 · AlabamaCHATTAHOOCHEE R .36 MI DS WFG DAM NR FT GAINES, GAWarmest of 23 sensors73°Fas of 18 hrs ago
  12. #12 · Kansas25S 01W 07BCCC01 SMW-S11 NR CW36Warmest of 27 sensors73°Fas of 19 hrs ago
  13. #13 · ArkansasLake Maumelle at Natural StepsWarmest of 29 sensors72°Fas of 20 hrs ago
  14. #14 · KentuckyBARREN RIVER NEAR FINNEY, KYWarmest of 46 sensors72°Fas of 19 hrs ago
  15. #15 · IndianaSALT CREEK NEAR HARRODSBURG, INWarmest of 39 sensors72°Fas of 18 hrs ago
  16. #16 · VirginiaROANOKE RIVER AT BUGGS ISLAND, VAWarmest of 57 sensors71°Fas of 18 hrs ago
  17. #17 · MississippiEAST PEARL RIVER AT CSX RAILROAD NR CLAIBORNE, MSWarmest of 8 sensors71°Fas of 18 hrs ago
  18. #18 · OhioE Fk Little Miami River bl Harsha Dam nr Bantam OHWarmest of 56 sensors70°Fas of 19 hrs ago
  19. #19 · IllinoisOHIO RIVER AT OLMSTED, ILWarmest of 27 sensors70°Fas of 18 hrs ago
  20. #20 · WyomingTantalus Creek at Norris Junction, YNPWarmest of 25 sensors70°Fas of 18 hrs ago
  21. #21 · TennesseeCUMBERLAND RIVER NEAR BORDEAUX, TNWarmest of 17 sensors69°Fas of 18 hrs ago
  22. #22 · OklahomaSpavinaw Creek near Eucha, OKWarmest of 16 sensors69°Fas of 18 hrs ago
  23. #23 · MissouriMississippi River at Cape Girardeau, MOWarmest of 17 sensors67°Fas of 18 hrs ago
  24. #24 · PennsylvaniaDELAWARE RIVER AT CHESTER PAWarmest of 132 sensors66°Fas of 3 days ago
  25. #25 · DelawareDelaware River at Reedy Island Jetty, DEWarmest of 22 sensors65°Fas of 18 hrs ago
  26. #26 · West VirginiaWEST FORK R BL STONEWALL JACKSON DAM NR WESTON, WVWarmest of 35 sensors65°Fas of 18 hrs ago
  27. #27 · OregonMIDDLE SANTIAM R BLW GREEN PETER DAM NR FOSTER, ORWarmest of 217 sensors64°Fas of 18 hrs ago
  28. #28 · New JerseySpruce Run Reservoir at Clinton NJWarmest of 52 sensors64°Fas of 18 hrs ago
  29. #29 · ConnecticutPOQUONNOCK RIVER AT BLUFF POINT STATE PARK, CTWarmest of 13 sensors63°Fas of 18 hrs ago
  30. #30 · WashingtonCOLUMBIA RIVER AT BRIDGEPORT, WAWarmest of 67 sensors63°Fas of 19 hrs ago
  31. #31 · MassachusettsMT. HOPE BAY NEAR KENNEDY PARK AT FALL RIVER, MAWarmest of 24 sensors62°Fas of 18 hrs ago
  32. #32 · New MexicoPECOS RIVER AT RED BLUFF, NMWarmest of 14 sensors62°Fas of 18 hrs ago
  33. #33 · IowaDes Moines River at Ottumwa, IAWarmest of 13 sensors62°Fas of 18 hrs ago
  34. #34 · New YorkCANNONSVILLE RES DIV CHANNEL NR GRAHAMSVILLE NYWarmest of 74 sensors62°Fas of 18 hrs ago
  35. #35 · ColoradoBESSEMER DITCH AT ST. CHARLES WD NEAR PUEBLO COWarmest of 101 sensors62°Fas of 18 hrs ago
  36. #36 · MichiganMUSKEGON RIVER NEAR OXBOW, MIWarmest of 55 sensors61°Fas of 18 hrs ago
  37. #37 · UtahGSL 3510, 6 MI WEST OF ANTELOPE ISLANDWarmest of 24 sensors61°Fas of 18 hrs ago
  38. #38 · MarylandSUSQUEHANNA RIVER NEAR DARLINGTON, MDWarmest of 19 sensors60°Fas of 18 hrs ago
  39. #39 · IdahoHULLS GULCH NR HULLS GULCH TRAILHEAD NR BOISE IDWarmest of 25 sensors60°Fas of 18 hrs ago
  40. #40 · WisconsinWILSON PARK CREEK @ GMIA OUTFALL 7 @ MILWAUKEE,WIWarmest of 37 sensors60°Fas of 19 hrs ago
  41. #41 · Rhode IslandWICKFORD TIDE GAGE NORTH KINGSTOWN, RIWarmest of 15 sensors57°Fas of 18 hrs ago
  42. #42 · MinnesotaMINNEHAHA CREEK AT HIAWATHA AVE. IN MINNEAPOLIS,MNWarmest of 16 sensors55°Fas of 19 hrs ago
  43. #43 · North DakotaMISSOURI RIVER AT BISMARCK, NDWarmest of 15 sensors55°Fas of 18 hrs ago
  44. #44 · VermontLAKE CHAMPLAIN AT BURLINGTON, VTWarmest of 3 sensors55°Fas of 18 hrs ago
  45. #45 · MontanaMissouri River bl Holter Dam nr Wolf Cr MTWarmest of 56 sensors54°Fas of 18 hrs ago
  46. #46 · NebraskaPlatte River at Louisville, Nebr.Warmest of 10 sensors53°Fas of 18 hrs ago
  47. #47 · MaineWest Grand Lake at Grand Lake Stream, MaineWarmest of 6 sensors52°Fas of 18 hrs ago
  48. #48 · South DakotaCHEYENNE RIVER AT RED SHIRT, SD1 sensor reporting50°Fas of 18 hrs ago
  49. #49 · AlaskaLEASK CREEK AT SHELTER COVE NR KETCHIKAN AKWarmest of 50 sensors49°Fas of 18 hrs ago
  50. #50 · New HampshireLAMPREY RIVER AT LANGFORD ROAD, AT RAYMOND, NHWarmest of 9 sensors48°Fas of 18 hrs ago

About this data

Every number on this page is a live reading from a USGS real-time monitoring station, captured in a daily snapshot. A state’s figure is the warmest sensor reading in that state right now — not a claim about its warmest lake or beach. Sensor coverage varies widely by state, most gauges sit on rivers and streams rather than swim beaches, and readings are provisional and can be revised by the USGS.

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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.