Beaver Dam Lake
Kosciusko County, WisconsinLimited DataEutrophic
Beaver Dam Lake is a productive, nutrient-rich eutrophic lake in Kosciusko County, IN. Water quality is graded F based on 1 sampling years through 2021. Compared to the 18 other monitored lakes in Kosciusko County, Beaver Dam Lake ranks #16 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2021-08-09. Grade methodology: LakeGrade methodology.
Swimming Safety
Avoid swimming, very poor water quality, potential algae toxins
Water Quality Grade: F, Very Poor
Very murky, less than 3.1 ft of visibility. Trophic State Index: 61.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.1 ft | F |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 61 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Location
County Ranking
Ranked #16 of 19 lakes in Kosciusko County
Cleaner Lakes Within 30 Miles
Beaver Dam Lake holds Grade F. 4 nearby lakes hold higher grades.
- BWti-02 LakeKosciusko County · 11.9 mi · Two grade letters higher (F → B)
- CWae-05 LakeWabash County · 9.2 mi · Two grade letters higher (F → C)
- CWti-05 LakeFulton County · 11 mi · Two grade letters higher (F → C)
- DWti-03 LakeKosciusko County · 5 mi · Higher grade (F → D)
Nearby Lakes in Kosciusko County
More Wisconsin Lake Rankings
Other Grade F Lakes in Wisconsin
Eutrophic Lakes in Wisconsin
EPA Impairment Status
Beaver Dam Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit INB06P1078_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: 2021-08-09
Monitoring stations: 1