Clearwater Lake Nr. Dam
Wayne County, WisconsinMesotrophic
Clearwater Lake Nr. Dam is a 1,630-acre mesotrophic lake in Wayne County, MO. Water quality is graded B based on 3 sampling years through 2025. Compared to the 2 other monitored lakes in Wayne County, Clearwater Lake Nr. Dam ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2025-07-30. Grade methodology: LakeGrade methodology.
Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Murky, only visible to about 5.7 ft. Phosphorus level: 15.7 µg/L. Chlorophyll-a: 3.7 µg/L. Trophic State Index: 46.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 5.7 ft | D |
| Phosphorus | 15.7 µg/L | A |
| Chlorophyll-a (Algae) | 3.7 µg/L | A |
| Trophic State Index (TSI) | 46 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 1.6K acres |
Location
County Ranking
Ranked #1 of 3 lakes in Wayne County
Nearby Lakes in Wayne County
More Wisconsin Lake Rankings
Other Grade B Lakes in Wisconsin
Mesotrophic Lakes in Wisconsin
Reservoir Info (USACE NID)
Clearwater Lake Nr. Dam is a man-made reservoir impounded by the Clearwater Dam (completed 1942), built primarily for flood risk reduction on the BLACK; earth-type dam, 155 ft tall and 4,225 ft long.
- Surface area
- 1,630 ac
- Normal storage
- 22,000 ac-ft
- Max storage
- 413,000 ac-ft
- Drainage area
- 898 sq mi
- Hazard class
- High
- Owner
- USACE - Little Rock District
All listed purposes: Flood Risk Reduction;Recreation.
Source: USACE National Inventory of Dams, NID ID MO30203 · Operator website · Matched by proximity (0.4 km)
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2025-07-30
Monitoring stations: 2