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LakeQuality

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

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

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

Both Long Branch Lk. Lake and Thomas Hill Res. Nr. Dam Lake sit in Missouri. 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. These two are within a letter of each other on the rubric — Long Branch Lk. Lake (D) versus Thomas Hill Res. Nr. Dam Lake (D). 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.

D

Long Branch Lk. Lake

Macon County, Wisconsin

Very murky, less than 1.8 ft of visibility.

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 Lk. LakeThomas Hill Res. Nr. Dam Lake
Overall GradeD (Poor)D (Poor)
Water Clarity1.8 ft2.3 ft
Phosphorus43.5 µg/L61 µg/L
Chlorophyll-a (Algae)16.1 µg/L14.2 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 Lk. Lake wins on overall water quality with a Grade D versus Thomas Hill Res. Nr. Dam Lake's Grade D. Water clarity: 1.8 ft vs 2.3 ft. For fishing diversity, Long Branch Lk. Lake also leads with 0 species.