Morton County Lake Quality
North Dakota, 7 lakes, measured by ND DEQ
Morton County holds 7 monitored lakes. With a sample that small the county-level summary describes those specific waters, not necessarily every water body in the county. 4 of those lakes carry recent nutrient and algae readings. The county-level summary describes that subset, not every water body listed. The monitored lakes here are mostly shallow, productive basins where summer algae is common; each lake page shows its own readings beside the EPA condition class.
The county's lakes lean shallow, which makes the readings sensitive to wind, sediment-resuspension, and any nutrient inputs from the watershed. The cleanest measured lake is Nygren Dam Lake.
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Quick Answers for Morton County
Planning a trip? Check special fishing regulations for Nygren Dam Lake — or check the official North Dakota fishing regulations.
All Lakes in Morton County
7 lakes · 4 ranked on readings, 3 without enough sampling4 lakes ranked on readings · 3 without enough sampling, hidden
| # | Lake | Clarity | Phosphorus | Algae | Trophic | Max Depth | Access |
|---|---|---|---|---|---|---|---|
| 1 | Nygren Dam LakeMorton | 2.6 ft | 73 µg/L | 24.7 µg/L | No recent samples | No recent samples | ✓ Public |
| 2 | Sweetbriar Dam LakeMorton | 3 ft | 353 µg/L | 54 µg/L | No recent samples | No recent samples | ✓ Public |
| 3 | Sweet Briar Dam-Mid ReservoirMorton | 3 ft | 239.5 µg/L | 36.9 µg/L | No recent samples | No recent samples | ✓ Public |
| 4 | Harmon LakeMorton | No recent samples | 20 µg/L | 48.5 µg/L | No recent samples | No recent samples | ✓ Public |
| Fish Creek LakeMorton | No recent samples | No recent samples | No recent samples | No recent samples | 49.3 ft | ✓ Public | |
| Storm Creek LakeMorton | No recent samples | No recent samples | No recent samples | No recent samples | 10.7 ft | ✓ Public | |
| Crown Butte LakeMorton | No recent samples | No recent samples | No recent samples | No recent samples | 30.6 ft | ✓ Public |
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.