Schoolcraft County Lake Quality
Michigan, 4 lakes — no lake here has enough monitoring data for a grade
Schoolcraft County has 4 graded 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.
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 Neds Lake (—); the most-stressed is Neds Lake (—).
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Quick Answers for Schoolcraft County
Planning a trip? Check special fishing regulations for Neds Lake — or check the official Michigan fishing regulations.
All Lakes in Schoolcraft County
4 lakes · 0 graded, 4 not rated0 graded lakes · 4 not rated, hidden
| # | Lake | Grade | Clarity | Phosphorus | Algae | Trophic | Max Depth | Access |
|---|---|---|---|---|---|---|---|---|
| NRNeds LakeSchoolcraft | NR | 6 ft | No recent samples | No recent samples | No recent samples | 40 ft | Not recorded | |
| NRBig Island LakeSchoolcraft | NR | 8.5 ft | No recent samples | No recent samples | No recent samples | 35 ft | ✓ Public | |
| NRTwilight LakeSchoolcraft | NR | 13 ft | No recent samples | No recent samples | No recent samples | 45 ft | Not recorded | |
| NRByers LakeSchoolcraft | NR | 4.6 ft | No recent samples | No recent samples | No recent samples | 15 ft | ✓ Public |
NR = not rated: there is not enough recent sampling to support a letter. That is EPA Integrated Reporting Category 3 (insufficient information), not a failing grade. How grading works.
Lake Match
Which lake suits how you actually use one?
Six questions — swimming, fishing, quiet, cabins, drive time — and a shortlist of graded lakes that fit, with the water quality behind each one.
Other Counties in Michigan
See how Schoolcraft County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 49 states and 2 Canadian provinces.
Source: EPA National Aquatic Resource Surveys, 2026.