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West Pike Lake

Cook County, MinnesotaLimited DataOligotrophic

West Pike Lake sits at the top of the Minnesota PCA grading rubric with an A, a mark reached by the cleanest lakes in Minnesota.

The lake's low TSI puts it in oligotrophic territory — the cleanest of the four trophic classes, but also the most vulnerable to nutrient-driven shifts. West Pike Lake is unusually deep for Minnesota at 120 ft, which buffers the lake against summer warming and helps the deep water stay oxygenated. West Pike Lake covers 788 acres alongside 10.0 miles of shoreline — a mid-sized water that supports a working fishery without being so large that conditions diverge between basins. Within Cook County's 128 graded waters, West Pike Lake sits at rank 28, near the top of the local distribution.

West Pike Lake has no invasive species recorded in Minnesota state databases as of 2024, though prevention practices still apply at all access points. The fishery is bass-led, with 5 documented species across the lake's records. No formal public access is documented at West Pike Lake — most use is by shoreline residents and their guests. 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

Excellent for swimming, crystal clear water with minimal algae

Water Quality Grade: A, Excellent

Crystal clear, you can see 19 ft down. Trophic State Index: 35.

MetricValueGrade
Water Clarity (Secchi Depth)19 ftA
PhosphorusNo data
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)35Oligotrophic

Low nutrients, clear water, excellent for swimming

Lake Details

CharacteristicValue
Maximum Depth120 ft
Surface Area788.2 acres
Shoreline Length10 mi
Littoral Zone28%
Public AccessNo

Fish Species

burbot,lake trout,smallmouth bass,tullibee (cisco),white sucker

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

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

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

West Pike Lake fishing regulations (limits, seasons, special rules)

Location

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County Ranking

Ranked #28 of 128 lakes in Cook County

Nearby Lakes in Cook County

DNR Fisheries Survey Summary

5 surveys on file from MN DNR Fisheries. Most recent: 2025-08-12 (Targeted Survey).

Top Species by Catch Rate

SpeciesAvg CPUEAvg Weight
White Sucker4.122.41 lb
BUB3.181.42 lb
Lake Trout2.243.75 lb
Smallmouth Bass1.371.61 lb
Tullibee (Cisco)0.540.11 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.

White Sucker

6 fish · 1720 in · 2023-09-18
32017181920

BUB

15 fish · 1521 in · 2023-09-18
53015161718192021

Lake Trout

15 fish · 1026 in · 2023-09-18
630101214161820222426

Smallmouth Bass

6 fish · 1215 in · 2023-09-18
32012131415

From the 2025-08-12 survey

Temperature and dissolved oxygen measurements were collected from the deepest basin in West Pike Lake on August 11th, 2025. This was done to evaluate the quantity and quality of cold, oxygenated water (i.e., oxythermal habitat) available to Lake Trout, the most sensitive coldwater species present in this lake (Cisco,…

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 West Pike Lake. 1 report on file.

EPA Impairment Status

West 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 MN16-0086-00 · 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: 1