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LakeQuality

Long Lost Lake vs Pine Lake

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

Long Lost Lake has a higher water quality grade (A, Excellent) than Pine Lake (B, Good). Both are in Clearwater County, Minnesota.

Both Long Lost Lake and Pine Lake sit in Minnesota. A same-state comparison strips out the state-level water-quality regime as a variable: any grade differences here are about the lakes themselves, not the agencies grading them. These two are within a letter of each other on the rubric — Long Lost Lake (A) versus Pine 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

Long Lost Lake

Clearwater County, Minnesota

Crystal clear, you can see 22 ft down.

B

Pine Lake

Clearwater County, Minnesota

Good clarity, visible to about 10.2 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.

MetricLong Lost LakePine Lake
Overall GradeA (Excellent)B (Good)
Water Clarity22 ft10.2 ft
Phosphorus10.5 µg/L20 µg/L
Chlorophyll-a (Algae)No dataNo data
Maximum Depth63 ft15 ft
Surface Area539.04 acres1.2K acres
Public AccessYesYes
Fish Species11
Trophic Stateoligotrophicmesotrophic

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

Verdict

Long Lost Lake wins on overall water quality with a Grade A versus Pine Lake's Grade B. Water clarity: 22 ft vs 10.2 ft. For fishing diversity, Long Lost Lake also leads with 1 species.