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C

Wind Lake

Lake County, MinnesotaLimited DataMesotrophic

Wind Lake earns a C — middle-of-the-pack water quality, with one or two parameters dragging the average down from a stronger grade.

Mesotrophic conditions dominate at Wind Lake: enough nutrients for a healthy fishery, not so much that algal blooms become a chronic problem. The lake bottoms out at 32 ft — a moderate depth that supports a warm-water fishery without the year-round cold refuge a deeper basin provides. The lake's 926 acres and 17.4 miles of shoreline put it in the mid-range bucket — large enough for varied use, small enough that watershed inputs reach the whole basin. Wind Lake sits at rank 90 of 142 in Lake County, in the lower half of the local distribution.

Wind Lake has no invasive species recorded in Minnesota state databases as of 2023, though prevention practices still apply at all access points. Walleye are documented at Wind Lake, one of 10 fish species on record for the lake. The lake lacks a documented public access point, so visitor use is limited. 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, Minnesota DNR LakeFinder, last sampled 2023-07-13. Grade methodology: LakeGrade methodology.

Reviewed by LakeQuality Editorial Team · Updated

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Swimming Safety

Generally safe for swimming, moderate water quality

Water Quality Grade: C, Fair

Moderate clarity, visible to about 9 ft. Trophic State Index: 45.

MetricValueGrade
Water Clarity (Secchi Depth)9 ftC
PhosphorusNo data
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)45Mesotrophic

Moderate nutrients, good water quality

Lake Details

CharacteristicValue
Maximum Depth32 ft
Surface Area926.08 acres
Shoreline Length17.4 mi
Littoral Zone74%
Public AccessNo

Fish Species

bluegill,hybrid sunfish,largemouth bass,northern pike,pumpkinseed,rock bass,smallmouth bass,walleye,white sucker,yellow perch

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

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

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

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

Water Quality Trend: Declining

Based on 4 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Declining-0.078 m/yr4
See year-by-year chart →

Location

Loading map…

County Ranking

Ranked #90 of 142 lakes in Lake County

Nearby Lakes in Lake County

DNR Fisheries Survey Summary

2 surveys on file from MN DNR Fisheries. Most recent: 2011-09-06 (Standard Survey).

Top Species by Catch Rate

SpeciesAvg CPUEAvg Weight
Northern Pike7.202.71 lb
White Sucker6.391.28 lb
Rock Bass3.050.14 lb
Walleye2.692.59 lb
Bluegill1.530.13 lb
Smallmouth Bass1.221.52 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.

Northern Pike

32 fish · 1633 in · 2011-09-06
420161820222426283032

White Sucker

46 fish · 721 in · 2011-09-06
12608101214161820

Rock Bass

28 fish · 38 in · 2011-09-06
1580345678

Walleye

47 fish · 1228 in · 2011-09-06
1050trophy 24121416182022242628

From the 2011-09-06 survey

Status of the Fishery Wind Lake is located approximately 14 miles NE of Ely, MN and is entirely within the BWCAW. It has a surface area of 1,009 acres and a maximum depth of 32 ft. Wind was thermally stratified on 09/06/2011, the first day of sampling, with a surface temperature of 67.6*F and a bottom temperature of…

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 Wind Lake. 1 report on file.

Reservoir Info (USACE NID)

Wind Lake is a man-made reservoir impounded by the Wind Lake (completed 1900), built primarily for other on the Basswood River-TR; other-type dam, 8 ft tall and 107 ft long.

Surface area
1,009 ac
Normal storage
15,232 ac-ft
Max storage
15,232 ac-ft
Hazard class
Low
Owner
USDA FS

Source: USACE National Inventory of Dams, NID ID MN00086 · Operator website

EPA Impairment Status

Wind 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 MN38-0642-00 · 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: 2023-07-13

Monitoring stations: 8