Lakes With Algae Problems in Idaho
14 lakes in Idaho 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 | Camas | F | 0.8 ft | 705000 µg/L | 428.2 µg/L |
| 2 | Mann Creek Reservoir | Washington | D | - | 53.5 µg/L | 179 µg/L |
| 3 | Nla Lake | Owyhee | F | 0.7 ft | 275000 µg/L | 64.6 µg/L |
| 4 | Nla Lake | Camas | F | 5.2 ft | 547.6 µg/L | 32.8 µg/L |
| 5 | Little Wood Reservoir | Blaine | D | - | 65 µg/L | 30.5 µg/L |
| 6 | Nla Lake | Fremont | D | 3.4 ft | 79000 µg/L | 27.6 µg/L |
| 7 | Nla Lake | Elmore | D | 3.4 ft | 93000 µg/L | 27.1 µg/L |
| 8 | Nla Lake | Caribou | C | 10.1 ft | 34.3 µg/L | 24.7 µg/L |
| 9 | Nla Lake | Bear Lake | F | 3.3 ft | 175000 µg/L | 24.4 µg/L |
| 10 | Nla Lake | Cassia | C | 3 ft | 1.9 µg/L | 24.2 µg/L |
| 11 | Nla Lake | Franklin | D | 5.2 ft | 68.9 µg/L | 22.7 µg/L |
| 12 | Nla Lake | Fremont | D | 6.2 ft | 72 µg/L | 22 µg/L |
| 13 | American Falls R-Sportsmans Cove Lake | Power | C | - | 55 µg/L | 20.1 µg/L |
| 14 | Nla Lake | Latah | D | 3.4 ft | 85000 µg/L | 20 µg/L |