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LakeQuality

Big Pine Lake vs Ml-Garrison Lake

Water quality, depth, fish species, and recreation comparison.

Big Pine Lake has a higher water quality grade (A, Excellent) than Ml-Garrison Lake (B, Good). Both are in Aitkin County, Minnesota.

Both Big Pine Lake and Ml-Garrison Lake sit in Minnesota. A same-state comparison strips out the state-level water-quality regime as a variable: any grade differences here are about the lakes themselves, not the agencies grading them. The grades are close: Big Pine Lake (A) and Ml-Garrison Lake (B) are within one letter of each other on the LakeGrade rubric. The per-parameter sub-grades below will show where the small differences actually live.

With grades this close, the choice between the two lakes turns on non-water-quality factors: depth, fish species, public access, distance from home. The per-lake pages below cover all of those.

A

Big Pine Lake

Aitkin County, Minnesota

Crystal clear, you can see 16.5 ft down.

B

Ml-Garrison Lake

Aitkin County, Minnesota

Murky, only visible to about 6.2 ft.

Side-by-Side Metrics

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

MetricBig Pine LakeMl-Garrison Lake
Overall GradeA (Excellent)B (Good)
Water Clarity16.5 ft6.2 ft
Phosphorus15 µg/L26 µg/L
Chlorophyll-a (Algae)No data4.7 µg/L
Maximum Depth78 ft42 ft
Surface Area638.02 acres128.3K acres
Public AccessYesYes
Fish Species11
Trophic Stateoligotrophicmesotrophic

Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).

Verdict

Big Pine Lake wins on overall water quality with a Grade A versus Ml-Garrison Lake's Grade B. Water clarity: 16.5 ft vs 6.2 ft. For fishing diversity, Big Pine Lake also leads with 1 species.