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LakeQuality
C

Little Cormorant Lake

Becker County, MinnesotaLimited DataMesotrophic

Little Cormorant Lake earns a C — middle-of-the-pack water quality, with one or two parameters dragging the average down from a stronger grade. Sub-grades cluster within a single letter of each other, which usually means the lake is in stable trophic balance rather than fighting one specific stressor.

The lake sits in the mesotrophic zone — the band where most well-managed Minnesota lakes fall. A maximum depth of 34 ft puts Little Cormorant Lake in the middle of Minnesota's depth distribution. With 1,067 acres of surface and 24.1 miles of shoreline, Little Cormorant Lake is a large water by Minnesota standards — recreational pressure is spread across a long shoreline. Little Cormorant Lake ranks 79 of 93 in Becker County — at the lower end of the locally monitored distribution.

No invasive species are currently listed at Little Cormorant Lake — the lake remains off the Minnesota infested-waters roster. The fishery includes walleye alongside the lake's other 14 documented species — a notable draw for Minnesota anglers. A documented public access point at Little Cormorant Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. The lake has a partial ice record — 17 observed ice-outs, centered near Apr 13. 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 2024-09-27. Grade methodology: LakeGrade methodology.

Swimming Safety

Generally safe for swimming, moderate water quality

Water Quality Grade: C, Fair

Moderate clarity, visible to about 7 ft. Trophic State Index: 49.

MetricValueGrade
Water Clarity (Secchi Depth)7 ftC
PhosphorusNo data
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)49Mesotrophic

Moderate nutrients, good water quality

Lake Details

CharacteristicValue
Maximum Depth34 ft
Average Depth17 ft
Surface Area1.1K acres
Shoreline Length24.1 mi
Littoral Zone58%
Public AccessYes

Fish Species

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

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

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

Little Cormorant Lake fishing regulations (limits, seasons, special rules)

Water Quality Trend: Declining

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

MetricTrendChange/YearYears
Water Clarity Declining-0.9 m/yr2

Ice Season

Historical ice data from Minnesota DNR (30 observations).

Typical Ice-Out
Apr 13
Typical Ice-In
Nov 20

Estimated open water season: 221 days

EarliestLatest
Ice-Out2012-03-22 (2012)2013-05-10 (2013)
Ice-In2003-11-08 (2003)2024-12-30 (2024)

Most recent ice-out: 2024-04-05

Location

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County Ranking

Ranked #79 of 93 lakes in Becker County

Nearby Lakes in Becker County

DNR Fisheries Survey Summary

13 surveys on file from MN DNR Fisheries. Most recent: 2025-06-10 (Targeted Survey).

Top Species by Catch Rate

SpeciesAvg CPUEAvg Weight
Black Bullhead53.700.36 lb
Yellow Perch29.960.16 lb
Bluegill22.570.19 lb
Brown Bullhead16.230.53 lb
CNM10.53
Green Sunfish8.950.05 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.

Black Bullhead

3 fish · 513 in · 2022-06-27
105678910111213

Yellow Perch

23 fish · 59 in · 2022-06-27
84056789

Bluegill

971 fish · 39 in · 2022-06-27
3661830trophy 103456789

Brown Bullhead

21 fish · 914 in · 2022-06-27
74091011121314

From the 2025-06-10 survey

Minnesota DNR Fisheries IBI program staff conducted an assessment of lakeshore habitat on Little Cormorant Lake on June 10th, 2025, following the Score the Shore survey protocols. The assessment consisted of 91 survey sites evenly spaced 400 meters around the lake. Assessments were made in three habitat zones:…

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 Little Cormorant Lake. 3 reports 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

Ice data from Minnesota DNR Climate

Most recent sample: 2024-09-27

Monitoring stations: 1