Cleanest Lakes in Williams County, North Dakota
Blacktail Dam Lake in Williams County leads the rankings on measured clarity and nutrients and 7.2 ft of clarity. Below are the top 18 cleanest monitored lakes in Williams County, North Dakota, ranked on EPA nutrient and algae measurements.
Ranked List
| # | Lake | County | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|
| 1 | Blacktail Dam Lake | Williams | 7.2 ft | 53 µg/L | 8.6 µg/L |
| 2 | Epping-Springbrook Dam-Deepest Lake | Williams | 4.9 ft | 689.5 µg/L | 20.4 µg/L |
| 3 | Lone Tree Lake | Williams | - | - | - |
| 4 | Cottonwood Lake | Williams | - | - | - |
| 5 | Alkali Lake | Williams | - | - | - |
| 6 | Shirley Lake | Williams | - | - | - |
| 7 | Johnny Anderson Slough | Williams | - | - | - |
| 8 | Lake Zahl | Williams | - | - | - |
| 9 | Horseshoe Lake | Williams | - | - | - |
| 10 | Chase Lake State Game Management Area | Williams | - | - | - |
| 11 | Sueet Slough | Williams | - | - | - |
| 12 | Stink Lake | Williams | - | - | - |
| 13 | Twin Lakes | Williams | - | - | - |
| 14 | Green Lake | Williams | - | - | - |
| 15 | Holm Lake | Williams | - | - | - |
| 16 | Peterson Slough | Williams | - | - | - |
| 17 | Tom Berg Lake | Williams | - | - | - |
| 18 | Helle Slough | Williams | - | - | - |
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