Grant County Lake Quality
North Dakota, 3 lakes, measured by ND DEQ
Grant County has 3 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. 2 of those lakes carry recent nutrient and algae readings. The county-level summary describes that subset, not every water body listed. For Grant County the spread behind the average matters more than the average itself: a few nutrient-rich lakes among many clear ones produce the same figure as the inverse.
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 Lake Tschida.
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Quick Answers for Grant County
Planning a trip? Check special fishing regulations for Lake Tschida — or check the official North Dakota fishing regulations.
All Lakes in Grant County
3 lakes · 2 ranked on readings, 1 without enough sampling2 lakes ranked on readings · 1 without enough sampling, hidden
| # | Lake | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|
| 1 | Lake TschidaGrant | 4.6 ft | 33 µg/L | 10.3 µg/L | No recent samples | ✓ Public |
| 2 | Sheep Creek Dam LakeGrant | 2.7 ft | 221.5 µg/L | 15 µg/L | No recent samples | ✓ Public |
| Pretty Rock LakeGrant | 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.