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LakeQuality

Carlson-Tande Dam Lake vs Tolna Dam Lake

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

Carlson-Tande Dam Lake has a higher water quality grade (C, Fair) than Tolna Dam Lake (D, Poor). Both are in Wisconsin.

Carlson-Tande Dam Lake and Tolna Dam Lake are both in North Dakota — 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 — Carlson-Tande Dam Lake (C) versus Tolna 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.

C

Carlson-Tande Dam Lake

Griggs County, Wisconsin

Murky, only visible to about 5.6 ft.

D

Tolna Dam Lake

Nelson County, Wisconsin

Murky, only visible to about 4.9 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.

MetricCarlson-Tande Dam LakeTolna Dam Lake
Overall GradeC (Fair)D (Poor)
Water Clarity5.6 ft4.9 ft
PhosphorusNo dataNo data
Chlorophyll-a (Algae)8.1 µg/LNo data
Maximum Depth--
Surface Area15.79 acres166.3 acres
Public AccessUnknownUnknown
Fish Species00
Trophic Stateeutrophiceutrophic

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

Verdict

Carlson-Tande Dam Lake wins on overall water quality with a Grade C versus Tolna Dam Lake's Grade D. Water clarity: 5.6 ft vs 4.9 ft. For fishing diversity, Carlson-Tande Dam Lake also leads with 0 species.