Skip to main content
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.

Mesotrophic conditions dominate at Little Cormorant Lake: enough nutrients for a healthy fishery, not so much that algal blooms become a chronic problem. A maximum depth of 34 ft puts Little Cormorant Lake in the middle of Minnesota's depth distribution. At 1,067 acres, Little Cormorant Lake is one of the larger lakes in Becker County, with 24.1 miles of shoreline supporting multiple distinct use patterns. Little Cormorant Lake ranks 79 of 93 in Becker County — at the lower end of the locally monitored distribution.

Little Cormorant Lake has no invasive species recorded in Minnesota state databases as of 2024, though prevention practices still apply at all access points. Walleye are documented at Little Cormorant Lake, one of 14 fish species on record for the lake. Public access is available — the lake is on the Minnesota PCA public-access list. 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.

Reviewed by LakeQuality Editorial Team · Updated

Track Little Cormorant Lake

Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.

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

black bullhead,black crappie,bluegill,brown bullhead,green sunfish,hybrid sunfish,largemouth bass,northern pike,pumpkinseed,rock bass,walleye,white sucker,yellow bullhead,yellow perch

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

Loading map…

County Ranking

Ranked #79 of 93 lakes in Becker County

Cleaner Lakes Within 30 Miles

Little Cormorant Lake holds Grade C. 5 nearby lakes hold higher grades.

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.

EPA Impairment Status

Little Cormorant Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).

Causes of impairment

Impaired biota (cause unknown)Mercury

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

Source: EPA ATTAINS assessment unit MN03-0506-00 · 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

Ice data from Minnesota DNR Climate

Most recent sample: 2024-09-27

Monitoring stations: 1