Pleasant Creek Lake
Linn County, WisconsinEutrophic
Pleasant Creek Lake is a 410-acre productive, nutrient-rich eutrophic lake in Linn County, IA. Water quality is graded D based on 2 sampling years through 2024. Compared to the 1 other monitored lakes in Linn County, Pleasant Creek Lake ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2024-08-27. Grade methodology: LakeGrade methodology.
Swimming Safety
Swimming not recommended, poor water quality with high algae risk
Water Quality Grade: D, Poor
Murky, only visible to about 3.6 ft. Chlorophyll-a: 26.5 µg/L. Trophic State Index: 61.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.6 ft | D |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | 26.5 µg/L | D |
| Trophic State Index (TSI) | 61 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 410 acres |
Location
County Ranking
Ranked #1 of 2 lakes in Linn County
Cleaner Lakes Within 30 Miles
Pleasant Creek Lake holds Grade D. One nearby lake has a higher grade.
See full comparison →Nearby Lakes in Linn County
More Wisconsin Lake Rankings
Other Grade D Lakes in Wisconsin
Eutrophic Lakes in Wisconsin
Reservoir Info (USACE NID)
Pleasant Creek Lake is a man-made reservoir impounded by the Pleasant Creek Lake Dam (completed 1977), built primarily for flood risk reduction on the PLEASANT CREEK; earth-type dam, 73 ft tall and 2,450 ft long.
- Surface area
- 410 ac
- Normal storage
- 7,100 ac-ft
- Max storage
- 11,000 ac-ft
- Drainage area
- 3.88 sq mi
- Hazard class
- High
- Owner
- Iowa Department of Natural Resources
All listed purposes: Flood Risk Reduction;Water Supply.
Source: USACE National Inventory of Dams, NID ID IA02083 · Operator website
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2024-08-27
Monitoring stations: 1