Weatherby Lake
Platte County, WisconsinMesotrophic
Weatherby Lake is a 186-acre mesotrophic lake in Platte County, MO. Water quality is graded B based on 3 sampling years through 2024. Compared to the 2 other monitored lakes in Platte County, Weatherby Lake ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2024-09-20. 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 6.2 ft. Phosphorus level: 16 µg/L. Chlorophyll-a: 5.9 µg/L. Trophic State Index: 48.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 6.2 ft | D |
| Phosphorus | 16 µg/L | A |
| Chlorophyll-a (Algae) | 5.9 µg/L | B |
| Trophic State Index (TSI) | 48 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 186 acres |
Location
County Ranking
Ranked #1 of 3 lakes in Platte County
Nearby Lakes in Platte County
More Wisconsin Lake Rankings
Other Grade B Lakes in Wisconsin
Mesotrophic Lakes in Wisconsin
Reservoir Info (USACE NID)
Weatherby Lake is a man-made reservoir impounded by the Weatherby Lake Dam (completed 1936), built primarily for recreation on the RUSH CREEK; earth-type dam, 85 ft tall and 1,100 ft long.
- Surface area
- 186 ac
- Normal storage
- 4,910 ac-ft
- Max storage
- 5,750 ac-ft
- Drainage area
- 4.3 sq mi
- Hazard class
- High
- Owner
- WEATHERBY LAKE IMPROVEMN
Source: USACE National Inventory of Dams, NID ID MO10690 · Operator website
EPA Impairment Status
Weatherby Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit MO_7071.00 · Official waterbody report
Data Sources
Water quality data from the EPA Water Quality Portal
Impairment status from EPA ATTAINS 303(d) database
Grading methodology based on Metropolitan Council standards
Most recent sample: 2024-09-20
Monitoring stations: 1