Black Hawk Lake vs Swan Lake Max Depth
Water quality, depth, fish species, and recreation comparison.
Black Hawk Lake and Swan Lake Max Depth both received the same overall water quality grade of F (Very Poor). Both are in Wisconsin.
Black Hawk Lake and Swan Lake Max Depth are both in Iowa — 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 — Black Hawk Lake (F) versus Swan Lake Max Depth (F). 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.
Black Hawk Lake
Very murky, less than 0.9 ft of visibility.
Swan Lake Max Depth
Very murky, less than 1.4 ft of visibility.
Side-by-Side Metrics
| Metric | Black Hawk Lake | Swan Lake Max Depth |
|---|---|---|
| Overall Grade | F (Very Poor) | F (Very Poor) |
| Water Clarity | 0.9 ft | 1.4 ft |
| Phosphorus | No data | No data |
| Chlorophyll-a (Algae) | 54.1 µg/L | 74 µg/L |
| Maximum Depth | - | - |
| Surface Area | 920 acres | 130 acres |
| Public Access | Unknown | Unknown |
| Fish Species | 0 | 0 |
| Trophic State | hypereutrophic | hypereutrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Both lakes earn the same Grade F. The tiebreakers come down to clarity (Black Hawk Lake: 0.9 ft, Swan Lake Max Depth: 1.4 ft) and what you want from the lake. Black Hawk Lake matches its peer on species count.