Main Section Lake
Essex County, WisconsinOligotrophic
Main Section Lake is a cold, clear oligotrophic lake in Essex County, NY. Water quality is graded A based on 3 sampling years through 2024. Compared to the 8 other monitored lakes in Essex County, Main Section Lake ranks #3 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2024-10-18. Grade methodology: LakeGrade methodology.
Swimming Safety
Excellent for swimming, crystal clear water with minimal algae
Water Quality Grade: A, Excellent
Crystal clear, you can see 15.7 ft down. Phosphorus level: 9.5 µg/L. Chlorophyll-a: 4.6 µg/L. Trophic State Index: 40.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 15.7 ft | A |
| Phosphorus | 9.5 µg/L | A |
| Chlorophyll-a (Algae) | 4.6 µg/L | A |
| Trophic State Index (TSI) | 40 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Location
County Ranking
Ranked #3 of 9 lakes in Essex County
Nearby Lakes in Essex County
More Wisconsin Lake Rankings
Other Grade A Lakes in Wisconsin
Oligotrophic Lakes in Wisconsin
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2024-10-18
Monitoring stations: 1