Alpena County Lake Quality
Michigan, 13 lakes — no lake here has enough monitoring data for a grade
Alpena County has 13 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. No lake in Alpena County has enough sampling behind it for an A–F grade yet. The 13 monitored lakes below carry whatever clarity, phosphorus, and chlorophyll-a measurements exist.
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.
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Quick Answers for Alpena County
Planning a trip? Check special fishing regulations for Beaver Lake, whether the fish are safe to eat, and the best times to fish — or check the official Michigan fishing regulations.
All Lakes in Alpena County
13 lakes · 0 graded, 13 not rated0 graded lakes · 13 not rated, hidden
| # | Lake | Grade | Clarity | Phosphorus | Algae | Trophic | Max Depth | Access |
|---|---|---|---|---|---|---|---|---|
| NRBeaver LakeAlpena | NR | 16.5 ft | No recent samples | No recent samples | No recent samples | 70 ft | Not recorded | |
| NRLong LakeAlpena | NR | No recent samples | No recent samples | No recent samples | No recent samples | 25 ft | ✓ Public | |
| NRMiddle LakeAlpena | NR | No recent samples | No recent samples | No recent samples | No recent samples | 23 ft | Not recorded | |
| NRDevils LakeAlpena | NR | No recent samples | No recent samples | No recent samples | No recent samples | 25 ft | Not recorded | |
| NRGrass LakeAlpena | NR | No recent samples | No recent samples | No recent samples | No recent samples | 15 ft | Not recorded | |
| NRLake WinyahAlpena | NR | No recent samples | No recent samples | No recent samples | No recent samples | 30 ft | Not recorded | |
| NRFourmile PondAlpena | NR | No recent samples | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRNinth Street PondAlpena | NR | No recent samples | No recent samples | No recent samples | No recent samples | 16 ft | Not recorded | |
| NRElbow LakeAlpena | NR | No recent samples | No recent samples | No recent samples | No recent samples | 14 ft | Not recorded | |
| NRMud LakeAlpena | NR | No recent samples | No recent samples | No recent samples | No recent samples | 14 ft | Not recorded | |
| NRFletcher PondAlpena | NR | No recent samples | No recent samples | No recent samples | No recent samples | 8 ft | ✓ Public | |
| NRDevils LakeAlpena | NR | No recent samples | No recent samples | No recent samples | No recent samples | 18 ft | Not recorded | |
| NRMindack LakeAlpena | NR | No recent samples | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded |
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
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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 Alpena County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all United States (49 states), Canada (Ontario, Québec, Nova Scotia, British Columbia and Newfoundland and Labrador), and 38 other country hubs..
Source: EPA National Aquatic Resource Surveys, 2026.