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LakeQuality

Little Mcdonald Lake vs Little Pine Lake

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

Little Mcdonald Lake has a higher water quality grade (A, Excellent) than Little Pine Lake (B, Good). Both are in Otter Tail County, Minnesota.

Little Mcdonald Lake and Little Pine Lake are both in Minnesota — a same-state head-to-head where the comparison comes down to lake-specific differences in depth, watershed, and monitoring history rather than the broader state-level water-quality regime. The grades are close: Little Mcdonald Lake (A) and Little Pine 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

Little Mcdonald Lake

Otter Tail County, Minnesota

Crystal clear, you can see 26.9 ft down.

B

Little Pine Lake

Otter Tail County, Minnesota

Moderate clarity, visible to about 9.5 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.

MetricLittle Mcdonald LakeLittle Pine Lake
Overall GradeA (Excellent)B (Good)
Water Clarity26.9 ft9.5 ft
Phosphorus7 µg/L26 µg/L
Chlorophyll-a (Algae)No dataNo data
Maximum Depth109 ft63 ft
Surface Area1.3K acres2.1K acres
Public AccessYesYes
Fish Species11
Trophic Stateoligotrophicmesotrophic

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

Verdict

Little Mcdonald Lake wins on overall water quality with a Grade A versus Little Pine Lake's Grade B. Water clarity: 26.9 ft vs 9.5 ft. For fishing diversity, Little Mcdonald Lake also leads with 1 species.