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.
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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.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 7 ft | C |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 49 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 34 ft |
| Average Depth | 17 ft |
| Surface Area | 1.1K acres |
| Shoreline Length | 24.1 mi |
| Littoral Zone | 58% |
| Public Access | Yes |
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).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.9 m/yr | 2 |
Ice Season
Historical ice data from Minnesota DNR (30 observations).
Estimated open water season: 221 days
| Earliest | Latest | |
|---|---|---|
| Ice-Out | 2012-03-22 (2012) | 2013-05-10 (2013) |
| Ice-In | 2003-11-08 (2003) | 2024-12-30 (2024) |
Most recent ice-out: 2024-04-05
Location
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.
- AMaud LakeBecker County · mi · Two grade letters higher (C → A)
- ABig Cormorant LakeBecker County · mi · Two grade letters higher (C → A)
- APearl LakeBecker County · mi · Two grade letters higher (C → A)
- AFox LakeBecker County · mi · Two grade letters higher (C → A)
- BLoon LakeBecker County · mi · Higher grade (C → B)
Nearby Lakes in Becker County
More Minnesota Lake Rankings
State Parks Near Little Cormorant Lake
Other Grade C Lakes in Minnesota
Mesotrophic Lakes in Minnesota
Compare Little Cormorant Lake With Nearby Lakes
DNR Fisheries Survey Summary
13 surveys on file from MN DNR Fisheries. Most recent: 2025-06-10 (Targeted Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| Black Bullhead | 53.70 | 0.36 lb |
| Yellow Perch | 29.96 | 0.16 lb |
| Bluegill | 22.57 | 0.19 lb |
| Brown Bullhead | 16.23 | 0.53 lb |
| CNM | 10.53 | — |
| Green Sunfish | 8.95 | 0.05 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
Yellow Perch
Bluegill
Brown Bullhead
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:…
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.
- —Fisheries Lake Survey — Little CormorantFisheries Lake Survey · MN DNR LakeFinder
- —Fish Stocking History — Little CormorantFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — Little CormorantPublic Water Access Sites · MN DNR LakeFinder
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
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