Blacktail Dam Lake vs Kota Ray Dam Lake
Water quality, depth, fish species, and recreation comparison.
Kota Ray Dam Lake has a higher water quality grade (B, Good) than Blacktail Dam Lake (B, Good). Both are in Williams County, Wisconsin.
Both Blacktail Dam Lake and Kota Ray Dam Lake 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 close: Blacktail Dam Lake (B) and Kota Ray Dam Lake (B) 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.
Blacktail Dam Lake
Moderate clarity, visible to about 7.2 ft.
Kota Ray Dam Lake
Moderate clarity, visible to about 7.7 ft.
Side-by-Side Metrics
| Metric | Blacktail Dam Lake | Kota Ray Dam Lake |
|---|---|---|
| Overall Grade | B (Good) | B (Good) |
| Water Clarity | 7.2 ft | 7.7 ft |
| Phosphorus | No data | No data |
| Chlorophyll-a (Algae) | 8.6 µg/L | 3.5 µg/L |
| Maximum Depth | - | - |
| Surface Area | 158 acres | 27.7 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
Kota Ray Dam Lake wins on overall water quality with a Grade B versus Blacktail Dam Lake's Grade B. Water clarity: 7.7 ft vs 7.2 ft. For fishing diversity, Kota Ray Dam Lake also leads with 0 species.