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LakeQuality

One Horse Gap Lake vs Pounds Hollow Lake

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

One Horse Gap Lake has a higher water quality grade (B, Good) than Pounds Hollow Lake (C, Fair). Both are in Wisconsin.

One Horse Gap Lake and Pounds Hollow 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. These two are within a letter of each other on the rubric — One Horse Gap Lake (B) versus Pounds Hollow Lake (C). 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.

B

One Horse Gap Lake

Pope County, Wisconsin

Murky, only visible to about 4 ft.

C

Pounds Hollow Lake

Gallatin County, Wisconsin

Murky, only visible to about 3.9 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.

MetricOne Horse Gap LakePounds Hollow Lake
Overall GradeB (Good)C (Fair)
Water Clarity4 ft3.9 ft
Phosphorus17 µg/L24 µg/L
Chlorophyll-a (Algae)No dataNo data
Maximum Depth--
Surface Area29 acres28 acres
Public AccessUnknownUnknown
Fish Species00
Trophic Stateeutrophiceutrophic

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

Verdict

One Horse Gap Lake wins on overall water quality with a Grade B versus Pounds Hollow Lake's Grade C. Water clarity: 4 ft vs 3.9 ft. For fishing diversity, One Horse Gap Lake also leads with 0 species.