Schoenick Lake at
Shawano County, WisconsinEutrophic
Schoenick Lake at earns a C — middle-of-the-pack water quality, with one or two parameters dragging the average down from a stronger grade. The three sub-grades — clarity, phosphorus, and chlorophyll-a — track close together, so no single parameter is dragging the average.
Eutrophic conditions are the baseline here: clarity drops noticeably in late summer, and dissolved oxygen near the bottom can become a concern. The lake bottoms out at 34 ft — a moderate depth that supports a warm-water fishery without the year-round cold refuge a deeper basin provides. At 42 acres, Schoenick Lake at sits below the Wisconsin median: a small water where shoreline activity has an outsized effect on water quality. Schoenick Lake at ranks 22 of 27 in Shawano County — at the lower end of the locally monitored distribution.
Eurasian watermilfoil has been documented at Schoenick Lake at, requiring shoreline management to keep dense mats from crowding native vegetation. Bass fishing is part of the appeal: the species list runs to 3, anchored by largemouth and/or smallmouth bass. Monitoring depth is thin here: the LakeGrade rubric is applied to a small number of sample years, and the grade will be revised as more data accumulates.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2021-08-31. Grade methodology: LakeGrade methodology.
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Murky, only visible to about 5 ft. Phosphorus level: 45.3 µg/L. Trophic State Index: 57.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 5 ft | D |
| Phosphorus | 45.3 µg/L | C |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 57 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 34 ft |
| Surface Area | 42 acres |
Fish Species
Click a species to see every graded lake where it is documented.
→ Best fishing times for Schoenick Lake at (14-day solunar calendar)
→ Is it safe to eat fish from Schoenick Lake at? (mercury & PFAS guide)
→ Schoenick Lake at fishing regulations (limits, seasons, special rules)
Invasive & Introduced Species
Red chips are ecologically harmful invasive species. Gray chips are stocked or introduced fish that aren't a current ecological concern.
Water Quality Trend: ↓ Declining
Based on 6 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | -0.1 m/yr | 6 |
| Phosphorus | ↓ Declining | +2.03 µg/L/yr | 6 |
Location
County Ranking
Ranked #22 of 27 lakes in Shawano County
Cleaner Lakes Within 30 Miles
Schoenick Lake at holds Grade C. 4 nearby lakes hold higher grades.
- APine LakeShawano County · mi · Two grade letters higher (C → A)
- ARound LakeShawano County · mi · Two grade letters higher (C → A)
- BGrass LakeShawano County · mi · Higher grade (C → B)
- CLong LakeShawano County · mi · Higher overall water quality score
Nearby Lakes in Shawano County
More Wisconsin Lake Rankings
Other Grade C Lakes in Wisconsin
Eutrophic Lakes in Wisconsin
WI DNR Lake Profile
Authoritative data from the Wisconsin DNR LakePages. 2 stations on file (most recent sample 2021).
Fish Species (DNR-rated)
EPA Impairment Status
Schoenick Lake at 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 WI10000096 · Official waterbody report · Matched by proximity (0.53 km)
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
Fish and recreation data from Wisconsin DNR Lakes
Most recent sample: 2021-08-31
Monitoring stations: 1
Where to stay near Schoenick Lake at
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