Brewer Lake vs Lake Ashtabula
Water quality, depth, fish species, and recreation comparison.
Lake Ashtabula has a higher water quality grade (B, Good) than Brewer Lake (D, Poor). Both are in Wisconsin.
Both Brewer Lake and Lake Ashtabula sit in North Dakota. 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: Lake Ashtabula grades a B while Brewer Lake grades a D. 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 — Lake Ashtabula 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?
Brewer Lake
Murky, only visible to about 4.3 ft.
Lake Ashtabula
Murky, only visible to about 6.6 ft.
Side-by-Side Metrics
| Metric | Brewer Lake | Lake Ashtabula |
|---|---|---|
| Overall Grade | D (Poor) | B (Good) |
| Water Clarity | 4.3 ft | 6.6 ft |
| Phosphorus | No data | No data |
| Chlorophyll-a (Algae) | 31.1 µg/L | 4 µg/L |
| Maximum Depth | - | - |
| Surface Area | 130 acres | 5.5K acres |
| Public Access | Unknown | Unknown |
| Fish Species | 0 | 0 |
| Trophic State | eutrophic | mesotrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Lake Ashtabula wins on overall water quality with a Grade B versus Brewer Lake's Grade D. Water clarity: 6.6 ft vs 4.3 ft. For fishing diversity, Lake Ashtabula also leads with 0 species.