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LakeQuality

Cass Lake Pike Bay vs Long Lake

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

Long Lake has a higher water quality grade (A, Excellent) than Cass Lake Pike Bay (A, Excellent). Both are in Cass County, Minnesota.

Cass Lake Pike Bay and Long 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 — Cass Lake Pike Bay (A) versus Long 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

Cass Lake Pike Bay

Cass County, Minnesota

Good clarity, visible to about 13.6 ft.

A

Long Lake

Cass County, Minnesota

Crystal clear, you can see 21.5 ft down.

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.

MetricCass Lake Pike BayLong Lake
Overall GradeA (Excellent)A (Excellent)
Water Clarity13.6 ft21.5 ft
PhosphorusNo data9 µg/L
Chlorophyll-a (Algae)3.7 µg/LNo data
Maximum Depth95 ft115 ft
Surface Area4.8K acres1.0K acres
Public AccessYesYes
Fish Species11
Trophic Statemesotrophicoligotrophic

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

Verdict

Long Lake wins on overall water quality with a Grade A versus Cass Lake Pike Bay's Grade A. Water clarity: 21.5 ft vs 13.6 ft. For fishing diversity, Long Lake also leads with 1 species.