What is the difference between Little Mcdonald Lake and Little Pine Lake?

Little Mcdonald Lake (Otter Tail County) carries readings with 26.5 ft clarity and 109 ft max depth. Little Pine Lake (Otter Tail County) carries readings with 9.5 ft clarity and 63 ft max depth.

Is Little Mcdonald Lake or Little Pine Lake better for fishing?

Little Mcdonald Lake has 14 documented fish species. Little Pine Lake has 20. The lake with more species and better water clarity (Secchi depth) generally supports more diverse and successful fishing.

Little Mcdonald Lake vs Little Pine Lake, Water Quality Comparison

Little Mcdonald Lake reads lower on nutrients and algae than Little Pine Lake. Both are in Otter Tail County, Minnesota.

Reviewed by LakeQuality Editorial Team · Updated Aug 26, 2026

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 readings are meaningfully apart: Little Mcdonald Lake carries clearly lower phosphorus and chlorophyll-a readings than Little Pine Lake. A spread that wide reflects real underlying differences, in watershed inputs, depth profiles, or monitoring rigor.

For a recreational visitor, the wider gap in the readings is decisive: Little Mcdonald Lake has the lower nutrient and algae numbers. For a researcher, the gap is the interesting part: what is different about the two watersheds, and which of those differences is mutable?

Little Mcdonald Lake

Otter Tail County, Minnesota

Crystal clear, you can see 26.5 ft down.

Little Pine Lake

Otter Tail County, Minnesota

Moderate clarity, visible to about 9.5 ft.

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Side-by-Side Metrics

Metric	Little Mcdonald Lake	Little Pine Lake
Water Clarity	26.5 ft Better	9.5 ft
Phosphorus	7 µg/L Better	26 µg/L
Chlorophyll-a (Algae)	1.8 µg/L Better	10.1 µg/L
Maximum Depth	109 ft Better	63 ft
Surface Area	1,316 acres	2,080 acres
Public Access	Yes	Yes
Fish Species	14	20 Better
Trophic State	oligotrophic	mesotrophic

A green ✓ marks the better value for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better). Surface area and trophic state carry no tick — a bigger lake is not a better lake.

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Compare Little Mcdonald Lake or Little Pine Lake against a different lake.

Little Mcdonald Lake vs Sybil Lake Little Mcdonald Lake vs Pelican Lake Big Pine Lake vs Little Pine Lake Little Pine Lake vs Pelican Lake

Verdict

Little Mcdonald Lake reads lower on nutrients and algae than Little Pine Lake. Water clarity: 26.5 ft vs 9.5 ft. For more fish-species variety, Little Pine Lake edges ahead with 20 documented species.

Full Little Mcdonald Lake report →Full Little Pine Lake report →All Otter Tail County lakes →Cleanest lakes in Minnesota →

Source: EPA National Aquatic Resource Surveys, 2026.