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High Island Lake vs Marion Lake

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

Marion Lake has a higher water quality grade (D, Poor) than High Island Lake (F, Very Poor). Both are in Minnesota.

Reviewed by LakeQuality Editorial Team · Updated

Both High Island Lake and Marion 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. These two are within a letter of each other on the rubric — High Island Lake (F) versus Marion Lake (D). The deciding factors for a recreational visitor are likely physical (depth, access, fish species) rather than water-quality differences.

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.

F

High Island Lake

Sibley County, Minnesota

Very murky, less than 2.1 ft of visibility.

D

Marion Lake

McLeod County, Minnesota

No clarity data.

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.

MetricHigh Island LakeMarion Lake
Overall GradeF (Very Poor)D (Poor)
Water Clarity2.1 ftNo data
Phosphorus180 µg/L71 µg/L
Chlorophyll-a (Algae)No dataNo data
Maximum Depth6.5 ft15.2 ft
Surface Area1.3K acres520.43 acres
Public AccessYesYes
Fish Species1113
Trophic Statehypereutrophiceutrophic

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

Verdict

Marion Lake wins on overall water quality with a Grade D versus High Island Lake's Grade F. For fishing diversity, Marion Lake also leads with 13 species.