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Hattie Lake and Norway Lake both received the same overall water quality grade of A (Excellent). Both are in Cass County, Minnesota.

Reviewed by LakeQuality Editorial Team · Updated

Hattie Lake and Norway 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. These two are within a letter of each other on the rubric — Hattie Lake (A) versus Norway Lake (A). 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.

A

Hattie Lake

Cass County, Minnesota

Good clarity, visible to about 10.3 ft.

A

Norway Lake

Cass County, Minnesota

Moderate clarity, visible to about 6.9 ft.

Side-by-Side Metrics

MetricHattie LakeNorway Lake
Overall GradeA (Excellent)A (Excellent)
Water Clarity10.3 ft Better6.9 ft
Phosphorus16.5 µg/L Better21 µg/L
Chlorophyll-a (Algae)4.5 µg/L Better5.1 µg/L
Maximum Depth30 ft Better12 ft
Surface Area588 acres515 acres
Public AccessNoYes
Fish Species1414
Trophic Statemesotrophicmesotrophic

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 Hattie Lake or Norway Lake against a different lake.

Verdict

Both lakes earn the same Grade A. The tiebreakers come down to clarity (Hattie Lake: 10.3 ft, Norway Lake: 6.9 ft) and what you want from the lake. Hattie Lake matches its peer on species count.

Source: EPA National Aquatic Resource Surveys, 2026.