Charles Mill Reservoir vs Clear Fork Reservoir
Water quality, depth, fish species, and recreation comparison.
Charles Mill Reservoir and Clear Fork Reservoir both received the same overall water quality grade of F (Very Poor). Both are in Wisconsin.
Both Charles Mill Reservoir and Clear Fork Reservoir sit in Ohio. 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. These two are within a letter of each other on the rubric — Charles Mill Reservoir (F) versus Clear Fork Reservoir (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.
Charles Mill Reservoir
Very murky, less than 0.9 ft of visibility.
Clear Fork Reservoir
Very murky, less than 3.1 ft of visibility.
Side-by-Side Metrics
| Metric | Charles Mill Reservoir | Clear Fork Reservoir |
|---|---|---|
| Overall Grade | F (Very Poor) | F (Very Poor) |
| Water Clarity | 0.9 ft | 3.1 ft |
| Phosphorus | No data | No data |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | - | - |
| Surface Area | 1.4K acres | 1.0K acres |
| Public Access | Unknown | Unknown |
| Fish Species | 0 | 0 |
| Trophic State | hypereutrophic | eutrophic |
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 (Charles Mill Reservoir: 0.9 ft, Clear Fork Reservoir: 3.1 ft) and what you want from the lake. Charles Mill Reservoir matches its peer on species count.