Is Charles Mill Reservoir Safe for Swimming?
Charles Mill Reservoir in Ashland County, Ohio is not rated for water quality — its monitoring record does not meet the evidence bar. Not rated for swimming — there is not enough monitoring data to judge this lake. Water clarity: 0.9 ft visibility. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | NR (Not rated) |
| Water Clarity (Secchi Depth) | 0.9 ft |
| Location | Ashland County, Ohio |
How does Charles Mill Reservoir compare?
Charles Mill Reservoir is not rated for water quality — it does not have enough recent summer sampling for a letter grade, so it is not compared with the Ohio state average.
Water clarity (Secchi depth) sits at 0.9 feet. That signals heavy algae or sediment, often tied to high phosphorus from runoff.
Watch Charles Mill Reservoir water quality
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