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LakeQuality

Blue Grass Lake vs George Lake

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

George Lake has a higher water quality grade (C, Fair) than Blue Grass Lake (C, Fair).

Blue Grass Lake is in Iowa; George Lake is in Illinois. Cross-state comparisons carry an extra wrinkle — Minnesota PCA and Wisconsin DNR use slightly different sampling cadences and station coverage, though both feed the same EPA Water Quality Portal. The grades are close: Blue Grass Lake (C) and George Lake (C) are within one letter of each other on the LakeGrade rubric. The per-parameter sub-grades below will show where the small differences actually live.

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.

C

Blue Grass Lake

Scott County, Wisconsin

Murky, only visible to about 4.5 ft.

C

George Lake

Rock Island County, Wisconsin

Murky, only visible to about 4.2 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.

MetricBlue Grass LakeGeorge Lake
Overall GradeC (Fair)C (Fair)
Water Clarity4.5 ft4.2 ft
PhosphorusNo data22.5 µg/L
Chlorophyll-a (Algae)12.7 µg/LNo data
Maximum Depth--
Surface Area13.8 acres167 acres
Public AccessUnknownUnknown
Fish Species00
Trophic Stateeutrophiceutrophic

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

Verdict

George Lake wins on overall water quality with a Grade C versus Blue Grass Lake's Grade C. Water clarity: 4.2 ft vs 4.5 ft. For fishing diversity, George Lake also leads with 0 species.