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LakeQuality

Agnes Lake vs Ramshead Lake

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

Agnes Lake has a higher water quality grade (B, Good) than Ramshead Lake (F, Very Poor). Both are in St. Louis County, Minnesota.

Reviewed by LakeQuality Editorial Team · Updated

Both Agnes Lake and Ramshead 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. Agnes Lake (B) is materially cleaner than Ramshead Lake (F). A gap that wide is unlikely to close in a single year of remediation work; it reflects multi-decade differences in the lakes themselves.

For a recreational visitor, the wider grade gap is decisive — Agnes Lake is the better water-quality choice. For a researcher, the gap is the interesting part: what is different about the two watersheds, and which of those differences is mutable?

B

Agnes Lake

St. Louis County, Minnesota

Good clarity, visible to about 11 ft.

F

Ramshead Lake

St. Louis County, Minnesota

No clarity data.

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.

MetricAgnes LakeRamshead Lake
Overall GradeB (Good)F (Very Poor)
Water Clarity11 ftNo data
PhosphorusNo dataNo data
Chlorophyll-a (Algae)No dataNo data
Maximum Depth30 ft10 ft
Surface Area1.0K acres552.93 acres
Public AccessNoNo
Fish Species100
Trophic StatemesotrophicUnknown

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

Verdict

Agnes Lake wins on overall water quality with a Grade B versus Ramshead Lake's Grade F. For fishing diversity, Agnes Lake also leads with 10 species.