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B

East Pike Lake

Cook County, MinnesotaLimited DataMesotrophic

East Pike Lake carries a solid B grade — strong on most parameters, with measurements that hold up well across the summer season.

Mesotrophic conditions dominate at East Pike Lake: enough nutrients for a healthy fishery, not so much that algal blooms become a chronic problem. East Pike Lake reaches 40 ft at its deepest point — typical for Minnesota mid-sized lakes, with seasonal stratification but limited cold-water refuge. East Pike Lake covers 554 acres alongside 9.4 miles of shoreline — a mid-sized water that supports a working fishery without being so large that conditions diverge between basins. East Pike Lake ranks 63 of 128 in Cook County — solidly in the upper half of the local distribution.

East Pike Lake has no invasive species recorded in Minnesota state databases as of 2024, though prevention practices still apply at all access points. The state fisheries records do not list documented species for East Pike Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. The lake lacks a documented public access point, so visitor use is limited. 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, Minnesota DNR LakeFinder, last sampled 2024-08-21. Grade methodology: LakeGrade methodology.

Reviewed by LakeQuality Editorial Team · Updated

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Swimming Safety

Good for swimming, clear water with low algae levels

Water Quality Grade: B, Good

Good clarity, visible to about 12.2 ft. Trophic State Index: 41.

MetricValueGrade
Water Clarity (Secchi Depth)12.2 ftB
PhosphorusNo data
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)41Mesotrophic

Moderate nutrients, good water quality

Lake Details

CharacteristicValue
Maximum Depth40 ft
Surface Area554.06 acres
Shoreline Length9.4 mi
Littoral Zone22%
Public AccessNo

Location

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County Ranking

Ranked #63 of 128 lakes in Cook County

Cleaner Lakes Within 30 Miles

East Pike Lake holds Grade B. 3 nearby lakes hold higher grades.

Nearby Lakes in Cook County

DNR Fisheries Survey Summary

5 surveys on file from MN DNR Fisheries. Most recent: 2025-08-08 (Targeted Survey).

Top Species by Catch Rate

SpeciesAvg CPUEAvg Weight
LKW15.601.48 lb
Tullibee (Cisco)13.030.12 lb
Smallmouth Bass5.881.17 lb
Yellow Perch2.190.17 lb
Northern Pike2.104.1 lb
White Sucker1.641.9 lb

CPUE = catch per unit effort, averaged across surveys (excludes juvenile shoreline seining). Higher CPUE = more abundant in standardized sampling.

Length Distributions

Number of fish caught at each inch class in the most recent survey that recorded lengths. Red dashed line marks an approximate trophy threshold for that species.

LKW

115 fish · 920 in · 2002-09-09
2111091011121314151617181920

Tullibee (Cisco)

2 fish · 77 in · 2002-09-09
2107

Smallmouth Bass

58 fish · 519 in · 2002-09-09
1370trophy 18681012141618

Yellow Perch

1 fish · 55 in · 2002-09-09
105

From the 2025-08-08 survey

Temperature and dissolved oxygen (DO) measurements were collected from the deepest basin in East Pike Lake on August 8th, 2025, to evaluate the quantity and quality of cold, oxygenated water (i.e., oxythermal habitat) available to Lake Whitefish, the most sensitive coldwater species present in this lake (Cisco, also…

Source: MN DNR LakeFinder Fisheries Lake Survey

DNR Reports & Resources

Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for East Pike Lake. 1 report on file.

EPA Impairment Status

East Pike Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).

Causes of impairment

Mercury

A Total Maximum Daily Load (TMDL) plan has been approved.

Source: EPA ATTAINS assessment unit MN16-0042-00 · 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

Lake details from Minnesota DNR LakeFinder

Most recent sample: 2024-08-21

Monitoring stations: 2