
Nicollet County Lake Quality
Minnesota, 11 lakes, measured by Minnesota PCA
Nicollet County holds 11 monitored lakes. With a sample that small the county-level summary describes those specific waters, not necessarily every water body in the county. 2 of those lakes carry recent nutrient and algae readings. The county-level summary describes that subset, not every water body listed. Most monitored lakes in Nicollet County carry favourable nutrient and algae readings for Minnesota.
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. Unnamed Lake has the lowest nutrient and algae readings in the county.
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Quick Answers for Nicollet County
Planning a trip? Check special fishing regulations for Unnamed Lake, whether the fish are safe to eat, and the best times to fish — or browse the full Minnesota regulations index.
DNR Reports (3)
Minnesota DNR LakeFinder resources for lakes in Nicollet County. browse all reports →
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — UnnamedFisheries Lake Survey · MN DNR LakeFinder
- —Public Water Access Sites — Oak LeafPublic Water Access Sites · MN DNR LakeFinder
- —Fish Stocking History — UnnamedFish Stocking History · MN DNR LakeFinder
All Lakes in Nicollet County
11 lakes · 2 ranked on readings, 9 without enough sampling2 lakes ranked on readings · 9 without enough sampling, hidden
| # | Lake | Clarity | Phosphorus | Algae | Trophic | Max Depth | Access |
|---|---|---|---|---|---|---|---|
| 1 | Unnamed LakeNicollet | 5.6 ft | 14.5 µg/L | 5.9 µg/L | No recent samples | 35 ft | ✓ Public |
| 2 | Oak Leaf LakeNicollet | 3.9 ft | 30 µg/L | 4.9 µg/L | No recent samples | No recent samples | ✓ Public |
| Erickson LakeNicollet | No recent samples | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| Little LakeNicollet | No recent samples | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| Mud LakeNicollet | No recent samples | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| Peterson LakeNicollet | No recent samples | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| Swan LakeNicollet | No recent samples | No recent samples | No recent samples | No recent samples | 3.5 ft | ✓ Public | |
| Middle LakeNicollet | No recent samples | No recent samples | No recent samples | No recent samples | No recent samples | ✓ Public | |
| Duck LakeNicollet | No recent samples | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| Clear LakeNicollet | No recent samples | No recent samples | No recent samples | No recent samples | 8.5 ft | ✓ Public | |
| Rice LakeNicollet | No recent samples | 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 Minnesota Pollution Control Agency and the Minnesota DNR. See data sources.