Cleanest Lakes in Mercer County, North Dakota
Qacmainstfbk Lake in Mercer County leads the rankings with a water quality grade of A. Below are the top 3 cleanest monitored lakes in Mercer County, North Dakota, ranked by EPA water quality score.
Ranked List
| # | Lake | County | Grade | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|---|
| 1 | Qacmainstfbk Lake | Mercer | A | - | 10 µg/L | 7 µg/L |
| 2 | Qacmainstdup Lake | Mercer | B | - | 10 µg/L | 11 µg/L |
| 3 | Harmony Lake | Mercer | C | 2.3 ft | - | 8.4 µg/L |