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Island Lake reads lower on nutrients and algae than Height of Land Lake. Both are in Becker County, Minnesota.

Reviewed by LakeQuality Editorial Team · Updated

Both Height of Land Lake and Island Lake sit in Minnesota. A same-state comparison strips out the state-level water-quality regime as a variable: any differences in the readings here are about the lakes themselves, not the agencies sampling them. The readings are meaningfully apart: Island Lake carries clearly lower phosphorus and chlorophyll-a readings than Height of Land 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: Island 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?

Height of Land Lake

Becker County, Minnesota

Murky, only visible to about 6.6 ft.

Island Lake

Becker County, Minnesota

Crystal clear, you can see 15 ft down.

Side-by-Side Metrics

MetricHeight of Land LakeIsland Lake
Water Clarity6.6 ft15 ft Better
Phosphorus27 µg/L19 µg/L Better
Chlorophyll-a (Algae)8.6 µg/L3.2 µg/L Better
Maximum Depth21 ft38 ft Better
Surface Area3,795 acres1,179 acres
Public AccessYesYes
Fish Species1315 Better
Trophic Stateeutrophicmesotrophic

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.

Verdict

Island Lake reads lower on nutrients and algae than Height of Land Lake. Water clarity: 15 ft vs 6.6 ft. For fishing diversity, Island Lake also leads with 15 species.

Source: EPA National Aquatic Resource Surveys, 2026.