Freeborn County Lake Quality
Minnesota, 4 lakes — no lake here has enough monitoring data for a grade
Only 4 lakes in Freeborn County carry an active grade. The county-level summary is therefore representative of those specific lakes, not necessarily of every water body in the county.
The county's lakes lean shallow, which makes the grades sensitive to wind, sediment-resuspension, and any nutrient inputs from the watershed. The cleanest lake on the books is Fountain Lake (—); the most-stressed is Fountain Lake (—).
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Quick Answers for Freeborn County
Planning a trip? Check special fishing regulations for Fountain Lake, whether the fish are safe to eat, and the best times to fish — or browse the full Minnesota regulations index.
Fishing in Freeborn County
DNR Reports (10)
Minnesota DNR LakeFinder resources for lakes in Freeborn County. browse all reports →
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — State LineFisheries Lake Survey · MN DNR LakeFinder
- —Fisheries Lake Survey — PickeralFisheries Lake Survey · MN DNR LakeFinder
- —Fisheries Lake Survey — FountainFisheries Lake Survey · MN DNR LakeFinder
- —Fish Stocking History — FountainFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — FountainPublic Water Access Sites · MN DNR LakeFinder
- —Public Water Access Sites — Lower TwinPublic Water Access Sites · MN DNR LakeFinder
- —Fish Stocking History — PickeralFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — PickeralPublic Water Access Sites · MN DNR LakeFinder
- —Fish Stocking History — State LineFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — State LinePublic Water Access Sites · MN DNR LakeFinder
All Lakes in Freeborn County
4 lakes · 0 graded, 4 not rated0 graded lakes · 4 not rated, hidden
| # | Lake | Grade | Clarity | Phosphorus | Algae | Trophic | Max Depth | Access |
|---|---|---|---|---|---|---|---|---|
| NRFountain LakeFreeborn | NR | 1.7 ft | No recent samples | No recent samples | No recent samples | 14 ft | ✓ Public | |
| NRLower Twin LakeFreeborn | NR | 1.8 ft | No recent samples | No recent samples | No recent samples | No recent samples | ✓ Public | |
| NRPickeral LakeFreeborn | NR | 1 ft | No recent samples | No recent samples | No recent samples | 6 ft | ✓ Public | |
| NRState Line LakeFreeborn | NR | 5.2 ft | No recent samples | No recent samples | No recent samples | No recent samples | ✓ Public |
NR = not rated: the monitoring record does not meet the evidence bar for a grade. That is EPA Integrated Reporting Category 3 (insufficient information), not a failing grade. How grading works.
Lake Match
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Other Counties in Minnesota
See how Freeborn County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 39 states and 2 Canadian provinces.
Source: EPA National Aquatic Resource Surveys, 2026.