English Lake
Manitowoc County, WisconsinMesotrophic
On the LakeGrade scale English Lake grades a B, with clarity at 7.5 ft and 27 µg/L of phosphorus placing it above the Wisconsin median. The two scored sub-grades — clarity and phosphorus — track close together, so neither one is dragging the average down.
A TSI near 50 places English Lake in the mesotrophic band — moderate productivity, with seasonal swings between clearer spring water and richer late-summer conditions. The lake's maximum depth is not yet documented in state morphometric records — context for its physical structure remains limited. The lake's surface area is not consistently recorded across state datasets — physical context remains partial. Among the 18 graded lakes in Manitowoc County, English Lake sits at rank 9, above the county median.
No invasive species are currently listed at English Lake — the lake remains off the Wisconsin infested-waters roster. The state fisheries records do not list documented species for English Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2025-08-27. Grade methodology: LakeGrade methodology.
Track English Lake
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Moderate clarity, visible to about 7.5 ft. Phosphorus level: 26.7 µg/L. Trophic State Index: 50.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 7.5 ft | C |
| Phosphorus | 26.7 µg/L | B |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 50 | Mesotrophic |
Moderate nutrients, good water quality
Water Quality Trend: ↓ Declining
Based on 6 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.459 m/yr | 6 |
| Phosphorus | → Stable | -0.17 µg/L/yr | 6 |
Location
County Ranking
Ranked #9 of 18 lakes in Manitowoc County
Cleaner Lakes Within 30 Miles
English Lake holds Grade B. 2 nearby lakes hold higher grades.
- BPigeon LakeManitowoc County · mi · Higher overall water quality score
- BSpring LakeManitowoc County · mi · Higher overall water quality score
Nearby Lakes in Manitowoc County
More Wisconsin Lake Rankings
Other Grade B Lakes in Wisconsin
Mesotrophic Lakes in Wisconsin
EPA Impairment Status
English Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit WI10000141 · 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: 2025-08-27
Monitoring stations: 1