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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 Missouri.

Reviewed by LakeQuality Editorial Team · Updated

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, Missouri

Very murky, less than 1.8 ft of visibility.

D

Thomas Hill Res. Nr. Dam Lake

Randolph County, Missouri

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 Area2,430 acres3,500 acres
Public AccessUnknownYes
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.