Irondequoit Bay Lake
Monroe County, WisconsinEutrophic
Irondequoit Bay Lake is a productive, nutrient-rich eutrophic lake in Monroe County, NY. Water quality is graded D based on 2 sampling years through 2023. Compared to the 4 other monitored lakes in Monroe County, Irondequoit Bay Lake ranks #3 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2023-09-28. 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 5.3 ft. Chlorophyll-a: 24.2 µg/L. Trophic State Index: 57.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 5.3 ft | D |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | 24.2 µg/L | D |
| Trophic State Index (TSI) | 57 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Location
County Ranking
Ranked #3 of 5 lakes in Monroe County
Cleaner Lakes Within 30 Miles
Irondequoit Bay Lake holds Grade D. 2 nearby lakes hold higher grades.
- BSodus Bay LakeWayne County · 28.7 mi · Two grade letters higher (D → B)
- CIrondequoit Bay LakeMonroe County · 0.5 mi · Higher grade (D → C)
Nearby Lakes in Monroe County
More Wisconsin Lake Rankings
Other Grade D Lakes in Wisconsin
Eutrophic Lakes in Wisconsin
EPA Impairment Status
Irondequoit Bay 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 NY0302-0001 · 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: 2023-09-28
Monitoring stations: 1