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LakeQuality
B

Dick Lake

Cook County, MinnesotaMesotrophic

On the LakeGrade scale Dick Lake grades a B, with clarity at 7.7 ft and 10 µg/L of phosphorus placing it above the Minnesota median. Clarity is the limiting factor — phosphorus is reasonable but suspended particles or algal cells keep water transparency below Minnesota norms.

A TSI near 43 places Dick Lake in the mesotrophic band — moderate productivity, with seasonal swings between clearer spring water and richer late-summer conditions. Dick Lake is a shallow lake at 12 ft maximum depth, which means it warms quickly, mixes constantly, and amplifies nutrient inputs. Dick Lake covers 127 acres alongside 3.5 miles of shoreline — a mid-sized water that supports a working fishery without being so large that conditions diverge between basins. Dick Lake ranks 60 of 128 in Cook County — solidly in the upper half of the local distribution.

Dick Lake has no invasive species recorded in Minnesota state databases as of 2022, though prevention practices still apply at all access points. Walleye are documented at Dick Lake, one of 5 fish species on record for the 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 2022-07-14. Grade methodology: LakeGrade methodology.

Swimming Safety

Good for swimming, clear water with low algae levels

Water Quality Grade: B, Good

Moderate clarity, visible to about 7.7 ft. Phosphorus level: 10 µg/L. Trophic State Index: 43.

MetricValueGrade
Water Clarity (Secchi Depth)7.7 ftC
Phosphorus10 µg/LA
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)43Mesotrophic

Moderate nutrients, good water quality

Lake Details

CharacteristicValue
Maximum Depth12 ft
Surface Area127.24 acres
Shoreline Length3.5 mi
Littoral Zone100%
Public AccessNo

Fish Species

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

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

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

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

Location

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County Ranking

Ranked #60 of 128 lakes in Cook County

Nearby Lakes in Cook County

DNR Fisheries Survey Summary

2 surveys on file from MN DNR Fisheries. Most recent: 2002-08-13 (Standard Survey).

Top Species by Catch Rate

SpeciesAvg CPUEAvg Weight
Yellow Perch6.420.23 lb
Smallmouth Bass4.531.33 lb
Walleye3.671.69 lb
Northern Pike3.252.15 lb
White Sucker2.081.51 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.

Yellow Perch

39 fish · 511 in · 2002-08-13
1050trophy 12567891011

Smallmouth Bass

27 fish · 517 in · 2002-08-13
740trophy 18567891011121314151617

Walleye

26 fish · 727 in · 2002-08-13
530trophy 248101214161820222426

Northern Pike

12 fish · 1425 in · 2002-08-13
210141516171819202122232425

From the 2002-08-13 survey

Gill nets and minnow traps were used to collect fish in this survey. As in 1991, five species were collected: walleye, smallmouth bass, northern pike, yellow perch, and white sucker. The number of walleye caught per gill net was the highest so far in Dick Lake, but was in the normal range for lakes of this class.…

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 Dick Lake. 1 report on file.

Data Sources

Water quality data from the EPA Water Quality Portal

Grading methodology based on Metropolitan Council standards

Lake details from Minnesota DNR LakeFinder

Most recent sample: 2022-07-14

Monitoring stations: 1