Mountrail County Lake Quality
North Dakota, 9 lakes, measured by ND DEQ
Mountrail County has 9 monitored lakes — a thin enough sample that one or two stressed lakes can move the county average noticeably. Use the per-lake pages below for what actually matters. 4 of those lakes carry recent nutrient and algae readings. The county-level summary describes that subset, not every water body listed. The county's readings sit in the middle of the North Dakota range, with one or two lakes pulling the average up or down depending on year.
Most of the county's monitored lakes are shallow, under 50 feet, which means wind keeps the water column mixed all summer and sediment-bound phosphorus releases back into the surface layer whenever the bottom is disturbed. Powers Lake has the lowest nutrient and algae readings in the county.
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Quick Answers for Mountrail County
Planning a trip? Check special fishing regulations for Powers Lake — or check the official North Dakota fishing regulations.
All Lakes in Mountrail County
9 lakes · 4 ranked on readings, 5 without enough sampling4 lakes ranked on readings · 5 without enough sampling, hidden
| # | Lake | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|
| 1 | Powers LakeMountrail | 5.6 ft | 184 µg/L | 7.9 µg/L | No recent samples | ✓ Public |
| 2 | Stanley ReservoirMountrail | 1.1 ft | 395 µg/L | 19.5 µg/L | No recent samples | ✓ Public |
| 3 | White Earth Dam LakeMountrail | 3 ft | 279.5 µg/L | 3.5 µg/L | No recent samples | ✓ Public |
| 4 | Clearwater LakeMountrail | 2.1 ft | 56 µg/L | 4.1 µg/L | No recent samples | ✓ Public |
| White LakeMountrail | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| Kittelson SloughMountrail | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| Lower Lostwood LakeMountrail | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| Cottonwood LakeMountrail | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| Shell LakeMountrail | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded |
NR = no nutrient or algae reading on record. The measurements are published as the authority reports them. Where the data comes from.
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Source: the North Dakota Department of Environmental Quality. See data sources.