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.
| 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
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
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
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