Owasco Lake
Cayuga County, WisconsinLimited DataMesotrophic
Owasco Lake is a mesotrophic lake in Cayuga County, NY. Water quality is graded B based on 1 sampling years through 2020. Compared to the 3 other monitored lakes in Cayuga County, Owasco Lake ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2020-09-15. Grade methodology: LakeGrade methodology.
Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Good clarity, visible to about 11 ft. Trophic State Index: 43.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 11 ft | B |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 43 | Mesotrophic |
Moderate nutrients, good water quality
Location
County Ranking
Ranked #2 of 4 lakes in Cayuga County
Cleaner Lakes Within 30 Miles
Owasco Lake holds Grade B. One nearby lake has a higher grade.
See full comparison →Nearby Lakes in Cayuga County
More Wisconsin Lake Rankings
Other Grade B Lakes in Wisconsin
Mesotrophic Lakes in Wisconsin
EPA Impairment Status
Owasco 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 NY0706-0009 · 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: 2020-09-15
Monitoring stations: 1