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LakeQuality

Billy Boy Flowage Lake vs Tiger Cat Flowage Lake

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

Billy Boy Flowage Lake has a higher water quality grade (A, Excellent) than Tiger Cat Flowage Lake (A, Excellent). Both are in Sawyer County, Wisconsin.

Billy Boy Flowage Lake and Tiger Cat Flowage Lake are both in Wisconsin — 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: Billy Boy Flowage Lake (A) and Tiger Cat Flowage Lake (A) 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.

A

Billy Boy Flowage Lake

Sawyer County, Wisconsin

No clarity data.

A

Tiger Cat Flowage Lake

Sawyer County, Wisconsin

Good clarity, visible to about 10.8 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.

MetricBilly Boy Flowage LakeTiger Cat Flowage Lake
Overall GradeA (Excellent)A (Excellent)
Water ClarityNo data10.8 ft
Phosphorus15 µg/L13.5 µg/L
Chlorophyll-a (Algae)No dataNo data
Maximum Depth--
Surface Area8.5K acres819 acres
Public AccessUnknownUnknown
Fish Species00
Trophic Statemesotrophicmesotrophic

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

Verdict

Billy Boy Flowage Lake wins on overall water quality with a Grade A versus Tiger Cat Flowage Lake's Grade A. For fishing diversity, Billy Boy Flowage Lake also leads with 0 species.