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LakeQuality
C

Pella Lake

Shawano County, WisconsinEutrophic

Pella Lake 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.

At a TSI of 55, Pella Lake reads as eutrophic — nutrient-rich enough that summer algal growth and reduced clarity are expected, not unusual. A maximum depth of just 13 ft means sediment-bound phosphorus releases back into the water column whenever wind stirs the bottom — a classic shallow-lake dynamic. The lake is compact at 49 acres, with partial shoreline records and little volume to buffer nutrient inputs. Within the 27 graded lakes of Shawano County, Pella Lake sits at rank 25, near the bottom of the county list.

Eurasian watermilfoil is established at Pella Lake, which can dampen recreational access and pressure the native plant community. Bass fishing is part of the appeal: the species list runs to 3, anchored by largemouth and/or smallmouth bass. A documented public access point at Pella Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. 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 2022-06-21. Grade methodology: LakeGrade methodology.

Swimming Safety

Generally safe for swimming, moderate water quality

Water Quality Grade: C, Fair

Moderate clarity, visible to about 8.2 ft. Phosphorus level: 63.7 µg/L. Trophic State Index: 55.

MetricValueGrade
Water Clarity (Secchi Depth)8.2 ftC
Phosphorus63.7 µg/LD
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)55Eutrophic

High nutrients, frequent algae, reduced clarity

Lake Details

CharacteristicValue
Maximum Depth13 ft
Surface Area49 acres
Public AccessYes

Fish Species

Click a species to see all Wisconsin and Minnesota lakes where it is found.

→ Best fishing times for Pella Lake (14-day solunar calendar)

→ Is it safe to eat fish from Pella Lake? (mercury & PFAS guide)

Pella Lake fishing regulations (limits, seasons, special rules)

Invasive Species

Curly-Leaf PondweedEurasian Water-MilfoilHybrid Eurasian / Northern Water-MilfoilPurple Loosestrife

Water Quality Trend: Improving

Based on 2 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Improving+2.5 m/yr2
Phosphorus Improving-26.2 µg/L/yr2
See year-by-year chart →

Recreation & Access

1
Boat Landings
Yes
Public Access

Location

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County Ranking

Ranked #25 of 27 lakes in Shawano County

Cleaner Lakes Within 30 Miles

Pella Lake holds Grade C. 5 nearby lakes hold higher grades.

See full comparison →

Nearby Lakes in Shawano County

Eutrophic Lakes in Wisconsin

WI DNR Lake Profile

Authoritative data from the Wisconsin DNR LakePages. 1 station on file (most recent sample 2022).

Fish Species (DNR-rated)

Smallmouth Bass(Common)Northern Pike(Common)Panfish(Present)

DNR Reports & Resources

Wisconsin DNR Fisheries scientists publish multi-year survey reports for Pella Lake covering fish populations, stocking, water quality, and management. 1 report on file.

Data Sources

Water quality data from the EPA Water Quality Portal

Grading methodology based on Metropolitan Council standards

Fish and recreation data from Wisconsin DNR Lakes

Most recent sample: 2022-06-21

Monitoring stations: 1