Lakes With Algae Problems in Utah
26 lakes in Utah report elevated algae levels (chlorophyll-a above 20 µg/L). These lakes are most likely to develop blue-green algae blooms during warm, calm summer weather. Avoid swimming during visible blooms and rinse pets after contact.
Ranked List
| # | Lake | County | Grade | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|---|
| 1 | Nla Lake | Uintah | F | 0.7 ft | - | 185.8 µg/L |
| 2 | Utah Lake | Utah | F | 0.5 ft | - | 159.3 µg/L |
| 3 | Utah Lake | Utah | F | 0.7 ft | - | 145.2 µg/L |
| 4 | Utah Lake | Utah | F | 0.7 ft | - | 95.8 µg/L |
| 5 | Nla Lake | Weber | F | 0.1 ft | - | 90 µg/L |
| 6 | Farmington Bay Lake | Davis | F | - | 343 µg/L | 89.9 µg/L |
| 7 | Newcastle Reservoir | Iron | D | 9.5 ft | - | 89 µg/L |
| 8 | Nla Lake | Cache | F | 0.5 ft | - | 76.1 µg/L |
| 9 | Koosharem Reservoir | Sevier | D | 7.2 ft | - | 58.4 µg/L |
| 10 | Utah Lake | Utah | F | 0.7 ft | - | 55.1 µg/L |
| 11 | Nla Lake | Sevier | F | 0.5 ft | - | 50.4 µg/L |
| 12 | Utah Lake Goshen Bay Southwest End | Utah | F | 0.7 ft | - | 49.6 µg/L |
| 13 | Newcastle Reservoir Midway | Iron | D | 9.2 ft | - | 46 µg/L |
| 14 | Utah Lake Outside Entrance To Provo Bay | Utah | F | 0.7 ft | - | 40.8 µg/L |
| 15 | Mantua Reservoir | Box Elder | F | 3 ft | - | 39.7 µg/L |
| 16 | Nla Lake | Sevier | D | 4.6 ft | - | 39.2 µg/L |
| 17 | Yuba Reservoir Midway | Juab | F | 2.8 ft | - | 38.4 µg/L |
| 18 | Nla Lake | Uintah | D | 4.1 ft | - | 37.6 µg/L |
| 19 | Nla Lake | Salt Lake | F | 0.7 ft | - | 31.2 µg/L |
| 20 | Baker Dam Reservoir | Washington | D | 3.6 ft | - | 29.5 µg/L |
| 21 | Johnson Reservoir | Sevier | D | 2 ft | - | 29.1 µg/L |
| 22 | Gsl Farmington Bay Outflow Lake | Davis | F | 1 ft | 358 µg/L | 26 µg/L |
| 23 | Nla Lake | Garfield | C | 10.9 ft | - | 24.1 µg/L |
| 24 | Mantua Reservoir S | Box Elder | D | 2.6 ft | - | 23.4 µg/L |
| 25 | Mill Meadow Reservoir | Wayne | D | 5.9 ft | - | 22.7 µg/L |
| 26 | Panguitch L Shore Lake | Garfield | D | 5.7 ft | - | 21.7 µg/L |