Beaver Dam Lake vs Prairie Lake
Water quality, depth, fish species, and recreation comparison.
Beaver Dam Lake has a higher water quality grade (A, Excellent) than Prairie Lake (F, Very Poor). Both are in Barron County, Wisconsin.
Both Beaver Dam Lake and Prairie Lake sit in Wisconsin. 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. The grades are meaningfully apart: Beaver Dam Lake grades a A while Prairie Lake grades a F. That two-letter spread reflects real underlying differences — different watershed inputs, different depth profiles, or different monitoring rigor.
For a recreational visitor, the wider grade gap is decisive — Beaver Dam Lake is the better water-quality choice. For a researcher, the gap is the interesting part: what is different about the two watersheds, and which of those differences is mutable?
Beaver Dam Lake
Good clarity, visible to about 11 ft.
Prairie Lake
Very murky, less than 2.1 ft of visibility.
Side-by-Side Metrics
| Metric | Beaver Dam Lake | Prairie Lake |
|---|---|---|
| Overall Grade | A (Excellent) | F (Very Poor) |
| Water Clarity | 11 ft | 2.1 ft |
| Phosphorus | 13 µg/L | No data |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | 106 ft | 16 ft |
| Surface Area | 1.2K acres | 1.4K acres |
| Public Access | Unknown | Unknown |
| Fish Species | 0 | 0 |
| Trophic State | mesotrophic | eutrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Beaver Dam Lake wins on overall water quality with a Grade A versus Prairie Lake's Grade F. Water clarity: 11 ft vs 2.1 ft. For fishing diversity, Beaver Dam Lake also leads with 0 species.