Safest Lakes to Swim In in Utah
50 lakes in Utah qualify as safest for swimming, all hold grade A or B and report chlorophyll-a (algae) under 10 µg/L. Always check local advisories on the day you swim.
Ranked List
| # | Lake | County | Grade | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|---|
| 1 | Flaming Gorge Reservoir Antelope Flat | Daggett | A | 25.3 ft | - | 0.7 µg/L |
| 2 | Flaming Gorge Lake | Daggett | A | 29.5 ft | - | 0.8 µg/L |
| 3 | Flaming Gorge Reservoir | Daggett | A | 31.8 ft | - | 0.7 µg/L |
| 4 | Nla Lake | Summit | A | 18.2 ft | - | 4.4 µg/L |
| 5 | Nla Lake | Summit | A | 17.2 ft | - | 1.3 µg/L |
| 6 | Nla Lake | Duchesne | A | 15.9 ft | - | 1.5 µg/L |
| 7 | Nla Lake | Salt Lake | A | 20.4 ft | - | 1.6 µg/L |
| 8 | Nla Lake | Sevier | A | 33.1 ft | - | 1.5 µg/L |
| 9 | Flaming Gorge-Green River Lake | Daggett | A | 18.9 ft | - | 0.8 µg/L |
| 10 | Strawberry Lake | Wasatch | A | 20 ft | - | 2.1 µg/L |
| 11 | Lake Mary | Salt Lake | A | 26.9 ft | - | 0.9 µg/L |
| 12 | Strawberry Reservoir Bryants Fk T | Wasatch | A | 15.6 ft | - | 2 µg/L |
| 13 | Newton Reservoir | Cache | A | 15.4 ft | - | 1.7 µg/L |
| 14 | Strawberry Reservoir Narrows T | Wasatch | A | 17.1 ft | - | 1.8 µg/L |
| 15 | Strawberry Reservoir Indian Creek Bay T | Wasatch | A | 16.4 ft | - | 4 µg/L |
| 16 | Strawberry Reservoir Strawberry Bay T | Wasatch | A | 16.4 ft | - | 3 µg/L |
| 17 | Bear Lake | Rich | A | 20.7 ft | - | 0.3 µg/L |
| 18 | Flaming Gorge-Sheeps Creek Bay Lake | Daggett | A | 18.7 ft | - | 0.4 µg/L |
| 19 | Flaming Gorge-Henry'S Fork Lake | Daggett | A | 15.1 ft | - | 0.7 µg/L |
| 20 | Lyman Lake | Summit | A | 19.7 ft | - | 1 µg/L |
| 21 | Flaming Gorge Reservoir Sheep Creek Bay | Daggett | A | 19 ft | - | 0.7 µg/L |
| 22 | Ferron Reservoir | Sanpete | A | 19 ft | - | 0.8 µg/L |
| 23 | Posey Lake | Garfield | A | 16.4 ft | - | 1.2 µg/L |
| 24 | Cleveland Lake | Emery | A | 17.4 ft | - | 2.1 µg/L |
| 25 | Newton Reservoir West of Parking Lot | Cache | A | 18 ft | - | 1.2 µg/L |
| 26 | Causey Reservoir | Weber | A | 15.1 ft | - | 1.7 µg/L |
| 27 | Silver Lake Flat Reservoir Replicate of | Utah | A | 16.4 ft | - | 1 µg/L |
| 28 | Deer Creek Lake | Wasatch | A | 11.5 ft | - | 3.6 µg/L |
| 29 | Rockport Lake | Summit | A | 10.3 ft | - | 3.5 µg/L |
| 30 | Nla Lake | Sevier | A | 10.7 ft | - | 2.5 µg/L |
| 31 | Nla Lake | Sanpete | A | 14.5 ft | - | 2.1 µg/L |
| 32 | Nla Lake | Utah | A | 16.4 ft | - | 5.3 µg/L |
| 33 | Nla Lake | Kane | A | 10.7 ft | - | 1.4 µg/L |
| 34 | Nla Lake | Sanpete | A | 11.3 ft | - | 2 µg/L |
| 35 | Nla Lake | Cache | A | 12.5 ft | - | 0.6 µg/L |
| 36 | Nla Lake | Wasatch | A | 17.2 ft | - | 5.1 µg/L |
| 37 | Nla Lake | Summit | A | 10.8 ft | - | 4.5 µg/L |
| 38 | Nla Lake | Wasatch | A | 12.5 ft | - | 3.2 µg/L |
| 39 | Pineview Lake | Weber | A | 10.8 ft | - | 2.4 µg/L |
| 40 | Wide Hollow Reservoir | Garfield | A | 13.8 ft | - | 3.3 µg/L |
| 41 | Starvation Reservoir | Duchesne | A | 11.2 ft | - | 1.4 µg/L |
| 42 | Little Dell Reservoir | Salt Lake | A | 14.8 ft | - | 1.6 µg/L |
| 43 | Echo Lake | Summit | A | 11.2 ft | - | 3.2 µg/L |
| 44 | Silver Lake Flat Reservoir | Utah | A | 10.5 ft | - | 2.7 µg/L |
| 45 | Millsite Reservoir | Emery | A | 10.5 ft | - | 1.9 µg/L |
| 46 | East Canyon Reservoir | Morgan | A | 13.8 ft | - | 3.4 µg/L |
| 47 | Electric Lake | Emery | A | 10.8 ft | - | 4 µg/L |
| 48 | Forsyth Reservoir | Sevier | A | 13.8 ft | - | 1.4 µg/L |
| 49 | Whitney Reservoir | Summit | A | 17.7 ft | - | 8 µg/L |
| 50 | Big Sand Wash Reservoir | Duchesne | A | 10.7 ft | - | 2.3 µg/L |