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LakeQuality

Long Branch L. Lake vs Thomas Hill Res. Nr. Dam Lake

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

Long Branch L. Lake has a higher water quality grade (C, Fair) than Thomas Hill Res. Nr. Dam Lake (D, Poor). Both are in Wisconsin.

Long Branch L. Lake and Thomas Hill Res. Nr. Dam Lake are both in Missouri — 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: Long Branch L. Lake (C) and Thomas Hill Res. Nr. Dam Lake (D) 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

Long Branch L. Lake

Macon County, Wisconsin

No clarity data.

D

Thomas Hill Res. Nr. Dam Lake

Randolph County, Wisconsin

Very murky, less than 2.3 ft of visibility.

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 Branch L. LakeThomas Hill Res. Nr. Dam Lake
Overall GradeC (Fair)D (Poor)
Water ClarityNo data2.3 ft
Phosphorus36 µg/L61 µg/L
Chlorophyll-a (Algae)No data14.2 µg/L
Maximum Depth--
Surface Area2.4K acres3.5K acres
Public AccessUnknownUnknown
Fish Species00
Trophic Stateeutrophiceutrophic

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

Verdict

Long Branch L. Lake wins on overall water quality with a Grade C versus Thomas Hill Res. Nr. Dam Lake's Grade D. For fishing diversity, Long Branch L. Lake also leads with 0 species.