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LakeQuality

Glendale Lake vs One Horse Gap Lake

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

Glendale Lake and One Horse Gap Lake both received the same overall water quality grade of B (Good). Both are in Pope County, Wisconsin.

Glendale Lake and One Horse Gap Lake are both in Illinois — 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. The grades are close: Glendale Lake (B) and One Horse Gap Lake (B) 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.

B

Glendale Lake

Pope County, Wisconsin

Murky, only visible to about 4.8 ft.

B

One Horse Gap Lake

Pope County, Wisconsin

Murky, only visible to about 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.

MetricGlendale LakeOne Horse Gap Lake
Overall GradeB (Good)B (Good)
Water Clarity4.8 ft4 ft
Phosphorus16 µg/L17 µg/L
Chlorophyll-a (Algae)No dataNo data
Maximum Depth--
Surface Area84 acres29 acres
Public AccessUnknownUnknown
Fish Species00
Trophic Statemesotrophiceutrophic

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

Verdict

Both lakes earn the same Grade B. The tiebreakers come down to clarity (Glendale Lake: 4.8 ft, One Horse Gap Lake: 4 ft) and what you want from the lake. Glendale Lake matches its peer on species count.