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LakeQuality

Clear Lake vs Ml-Nw Lake

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

Clear Lake has a higher water quality grade (A, Excellent) than Ml-Nw Lake (B, Good). Both are in Aitkin County, Minnesota.

Reviewed by LakeQuality Editorial Team · Updated

Clear Lake and Ml-Nw 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 — Clear Lake (A) versus Ml-Nw Lake (B). 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

Clear Lake

Aitkin County, Minnesota

Crystal clear, you can see 15 ft down.

B

Ml-Nw Lake

Aitkin County, Minnesota

Moderate clarity, visible to about 9.4 ft.

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.

MetricClear LakeMl-Nw Lake
Overall GradeA (Excellent)B (Good)
Water Clarity15 ft9.4 ft
Phosphorus15 µg/L24 µg/L
Chlorophyll-a (Algae)No data5.7 µg/L
Maximum Depth24 ft42 ft
Surface Area573.5 acres128.3K acres
Public AccessYesYes
Fish Species1421
Trophic Statemesotrophicmesotrophic

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

Verdict

Clear Lake wins on overall water quality with a Grade A versus Ml-Nw Lake's Grade B. Water clarity: 15 ft vs 9.4 ft. For more fish-species variety, Ml-Nw Lake edges ahead with 21 documented species.