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Victoria Lake reads lower on nutrients and algae than Smith Lake. Both are in Douglas County, Minnesota.

Reviewed by LakeQuality Editorial Team · Updated

Smith Lake and Victoria 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: Victoria Lake carries clearly lower phosphorus and chlorophyll-a readings than Smith 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: Victoria 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?

Smith Lake

Douglas County, Minnesota

Murky, only visible to about 3.6 ft.

Victoria Lake

Douglas County, Minnesota

Good clarity, visible to about 10.2 ft.

Side-by-Side Metrics

MetricSmith LakeVictoria Lake
Water Clarity3.6 ft10.2 ft Better
Phosphorus58 µg/L21 µg/L Better
Chlorophyll-a (Algae)36 µg/L7.5 µg/L Better
Maximum Depth30 ft60 ft Better
Surface Area666 acres417 acres
Public AccessYesYes
Fish Species1519 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

Victoria Lake reads lower on nutrients and algae than Smith Lake. Water clarity: 10.2 ft vs 3.6 ft. For fishing diversity, Victoria Lake also leads with 19 species.

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Source: EPA National Aquatic Resource Surveys, 2026.