Clamshell

Crow Wing County, Minnesota — DOW #18035600

260 Surveys

Special Regulations for Clamshell

This lake has regulations that differ from statewide defaults. Always check before fishing.

Invasive Species Alert

Clamshell has confirmed populations of:

Clean, drain, and dry all equipment before moving to another water body. It's the law in Minnesota.

211.06
Acres
44 ft
Max Depth
0
18
Fish Species
15
Local Guides

DNR Fish Surveys

Catch-per-unit-effort (CPUE) data from Minnesota DNR fish population assessments on Clamshell. Green = above normal range. Red = below normal.

Largemouth Bass

Date Gear CPUE Normal Range Avg Weight Total Catch
2018-06-26 Backpack electrofishing 6.7 9
2018-06-26 50-ft beach seine 22.9 160
2022-07-25 50-ft beach seine 11.8 59
2022-07-25 15-ft beach seine 1.0 1
2022-07-25 Backpack electrofishing 3.8 5
2000-06-12 Survey seining 0.3 1
2000-06-12 Special electrofishing 20.4 1.48 lb 11
2000-06-12 Standard gill nets 2.3 (above normal) 0.4 – 1.6 0.88 lb 9
2000-06-12 Standard trap nets 0.7 (normal) 0.3 – 1.4 0.98 lb 4
1995-06-26 Survey seining 6.0 0.02 lb 24
1995-06-26 Standard gill nets 0.3 (below normal) 0.4 – 1.6 1.39 lb 1
1995-06-26 Standard trap nets 0.2 (below normal) 0.3 – 1.4 0.24 lb 1
2011-06-13 15-ft beach seine 2.0 8
2011-06-13 Standard gill nets 0.5 (normal) 0.4 – 1.6 1.01 lb 3
2011-06-13 Backpack electrofishing 30.1 19
2011-06-13 Standard trap nets 0.3 (normal) 0.3 – 1.4 0.64 lb 3
2018-06-11 Standard gill nets 1.8 (above normal) 0.4 – 1.6 1.45 lb 11
2018-06-11 Standard trap nets 1.6 (above normal) 0.3 – 1.4 0.88 lb 14
2024-06-10 Standard gill nets 0.8 (normal) 0.4 – 1.6 1.01 lb 5
2024-06-10 Standard trap nets 0.7 (normal) 0.3 – 1.4 0.61 lb 6

Pumpkinseed

Date Gear CPUE Normal Range Avg Weight Total Catch
2018-06-26 Backpack electrofishing 3.0 4
2018-06-26 50-ft beach seine 5.6 39
2022-07-25 Backpack electrofishing 1.5 2
2022-07-25 50-ft beach seine 4.4 22
2000-06-12 Survey seining 1.0 4
2000-06-12 Standard gill nets 3.0 0.16 lb 12
2000-06-12 Standard trap nets 6.3 (normal) 1.5 – 6.8 0.15 lb 38
1995-06-26 Survey seining 2.5 10
1995-06-26 Standard trap nets 5.2 (normal) 1.5 – 6.8 0.14 lb 31
1990-06-25 Standard trap nets 12.3 (above normal) 1.5 – 6.8 0.17 lb 74
2011-06-13 Standard gill nets 0.2 0.10 lb 1
2011-06-13 Backpack electrofishing 6.3 4
2011-06-13 Standard trap nets 2.7 (normal) 1.5 – 6.8 0.16 lb 24
2018-06-11 Standard gill nets 1.3 0.09 lb 8
2018-06-11 Standard trap nets 7.1 (above normal) 1.5 – 6.8 0.16 lb 64
2024-06-10 Standard gill nets 0.5 0.07 lb 3
2024-06-10 Standard trap nets 7.9 (above normal) 1.5 – 6.8 0.13 lb 71

Bluegill

Date Gear CPUE Normal Range Avg Weight Total Catch
2018-06-26 Backpack electrofishing 17.0 23
2018-06-26 50-ft beach seine 47.9 335
2022-07-25 Backpack electrofishing 9.0 12
2022-07-25 50-ft beach seine 56.8 284
2022-07-25 15-ft beach seine 1.0 1
2000-06-12 Survey seining 4.5 18
2000-06-12 Standard gill nets 19.0 0.15 lb 76
2000-06-12 Standard trap nets 34.2 (normal) 9.5 – 57.3 0.13 lb 205
1995-06-26 Survey seining 73.3 0.01 lb 293
1995-06-26 Standard gill nets 0.5 0.20 lb 2
1995-06-26 Standard trap nets 27.0 (normal) 9.5 – 57.3 0.14 lb 162
1990-06-25 Standard gill nets 11.8 0.08 lb 47
1990-06-25 Standard trap nets 80.2 (above normal) 9.5 – 57.3 0.13 lb 481
2011-06-13 Standard gill nets 8.0 0.15 lb 48
2011-06-13 Backpack electrofishing 34.9 22
2011-06-13 Standard trap nets 28.9 (normal) 9.5 – 57.3 0.17 lb 260
2011-06-13 50-ft beach seine 4.0 4
2011-06-13 15-ft beach seine 2.3 9
2018-06-11 Standard gill nets 3.0 0.09 lb 18
2018-06-11 Standard trap nets 34.6 (normal) 9.5 – 57.3 0.11 lb 311
2024-06-10 Standard gill nets 4.2 0.09 lb 25
2024-06-10 Standard trap nets 37.8 (normal) 9.5 – 57.3 0.08 lb 340

White Sucker

Date Gear CPUE Normal Range Avg Weight Total Catch
2018-06-26 Backpack electrofishing 0.7 1
2018-06-26 50-ft beach seine 0.1 1
2000-06-12 Standard gill nets 1.0 (normal) 0.3 – 1.7 2.70 lb 4
2000-06-12 Standard trap nets 0.2 (below normal) 0.3 – 0.9 1.76 lb 1
1995-06-26 Standard gill nets 0.5 (normal) 0.3 – 1.7 2.29 lb 2
1990-06-25 Standard gill nets 0.8 (normal) 0.3 – 1.7 3.00 lb 3
1990-06-25 Standard trap nets 0.3 (normal) 0.3 – 0.9 2.00 lb 2
2011-06-13 Standard gill nets 0.7 (normal) 0.3 – 1.7 3.49 lb 4
2018-06-11 Standard gill nets 0.7 (normal) 0.3 – 1.7 3.16 lb 4
2024-06-10 Standard gill nets 0.5 (normal) 0.3 – 1.7 2.60 lb 3

CNM

Date Gear CPUE Normal Range Total Catch
2018-06-26 Backpack electrofishing 6.7 9
2022-07-25 Backpack electrofishing 9.8 13
2011-06-13 Backpack electrofishing 4.8 3

BNS

Date Gear CPUE Normal Range Total Catch
2018-06-26 50-ft beach seine 3.0 21
2022-07-25 50-ft beach seine 0.2 1
1995-06-26 Survey seining 0.3 1
2011-06-13 Backpack electrofishing 1.6 1

Yellow Perch

Date Gear CPUE Normal Range Avg Weight Total Catch
2018-06-26 Backpack electrofishing 2.2 3
2018-06-26 50-ft beach seine 10.6 74
2022-07-25 50-ft beach seine 2.8 14
2022-07-25 Backpack electrofishing 0.8 1
2000-06-12 Standard trap nets 0.2 (below normal) 0.3 – 1.2 0.07 lb 1
2000-06-12 Survey seining 1.5 6
2000-06-12 Standard gill nets 1.0 (normal) 1.0 – 10.3 0.15 lb 4
1995-06-26 Standard trap nets 0.5 (normal) 0.3 – 1.2 0.11 lb 3
1995-06-26 Survey seining 14.5 0.01 lb 58
1995-06-26 Standard gill nets 0.5 (below normal) 1.0 – 10.3 0.09 lb 2
1990-06-25 Standard trap nets 0.3 (normal) 0.3 – 1.2 0.10 lb 2
1990-06-25 Standard gill nets 0.5 (below normal) 1.0 – 10.3 0.10 lb 2
2011-06-13 15-ft beach seine 1.5 6
2011-06-13 Standard gill nets 2.7 (normal) 1.0 – 10.3 0.21 lb 16
2011-06-13 Backpack electrofishing 17.4 11
2011-06-13 Standard trap nets 0.1 (below normal) 0.3 – 1.2 0.24 lb 1
2018-06-11 Standard trap nets 0.3 (normal) 0.3 – 1.2 0.19 lb 3
2018-06-11 Standard gill nets 1.3 (normal) 1.0 – 10.3 0.11 lb 8
2024-06-10 Standard trap nets 0.4 (normal) 0.3 – 1.2 0.13 lb 4
2024-06-10 Standard gill nets 4.8 (normal) 1.0 – 10.3 0.10 lb 29

Northern Pike

Date Gear CPUE Normal Range Avg Weight Total Catch
2018-06-26 50-ft beach seine 0.7 5
2022-07-25 50-ft beach seine 0.4 2
2000-06-12 Standard gill nets 11.5 (above normal) 3.5 – 8.9 1.91 lb 46
2000-06-12 Standard trap nets 1.0 1.41 lb 6
1995-06-26 Standard gill nets 11.8 (above normal) 3.5 – 8.9 2.19 lb 47
1995-06-26 Standard trap nets 1.2 0.65 lb 7
1990-06-25 Standard gill nets 5.8 (normal) 3.5 – 8.9 2.00 lb 23
1990-06-25 Standard trap nets 0.5 0.70 lb 3
2011-06-13 Standard gill nets 13.3 (above normal) 3.5 – 8.9 1.63 lb 80
2011-06-13 Standard trap nets 0.8 0.82 lb 7
2018-06-11 Standard gill nets 12.7 (above normal) 3.5 – 8.9 2.35 lb 76
2018-06-11 Standard trap nets 0.8 2.43 lb 7
2024-06-10 Standard gill nets 10.7 (above normal) 3.5 – 8.9 2.12 lb 64
2024-06-10 Standard trap nets 0.3 1.17 lb 3

Green Sunfish

Date Gear CPUE Normal Range Avg Weight Total Catch
2018-06-26 Backpack electrofishing 10.4 14
2018-06-26 50-ft beach seine 0.6 4
2022-07-25 Backpack electrofishing 3.8 5
2022-07-25 50-ft beach seine 1.2 6
2000-06-12 Survey seining 0.3 1
2011-06-13 Backpack electrofishing 17.4 11
2024-06-10 Standard trap nets 0.3 (below normal) 0.5 – 0.9 0.10 lb 3

Johnny Darter

Date Gear CPUE Normal Range Total Catch
2018-06-26 Backpack electrofishing 8.2 11
2018-06-26 50-ft beach seine 0.7 5
2022-07-25 50-ft beach seine 0.4 2
2022-07-25 Backpack electrofishing 10.5 14
2011-06-13 15-ft beach seine 0.5 2
2011-06-13 Backpack electrofishing 7.9 5

Tadpole Madtom

Date Gear CPUE Normal Range Total Catch
2018-06-26 Backpack electrofishing 0.7 1
2022-07-25 15-ft beach seine 1.0 1

Golden Shiner

Date Gear CPUE Normal Range Total Catch
2018-06-26 50-ft beach seine 0.4 3
2022-07-25 Backpack electrofishing 0.8 1
2011-06-13 Backpack electrofishing 3.2 2

Bluntnose Minnow

Date Gear CPUE Normal Range Total Catch
2018-06-26 50-ft beach seine 9.1 64
2018-06-26 Backpack electrofishing 3.7 5
2022-07-25 Backpack electrofishing 3.0 4
2022-07-25 50-ft beach seine 4.8 24
2011-06-13 15-ft beach seine 0.5 2
2011-06-13 Backpack electrofishing 6.3 4

Rock Bass

Date Gear CPUE Normal Range Avg Weight Total Catch
2018-06-26 50-ft beach seine 0.4 3
2018-06-26 Backpack electrofishing 3.0 4
2022-07-25 50-ft beach seine 2.2 11
2022-07-25 Backpack electrofishing 0.8 1
2000-06-12 Standard gill nets 3.5 (above normal) 0.5 – 1.7 0.72 lb 14
2000-06-12 Standard trap nets 0.8 (normal) 0.4 – 1.7 0.36 lb 5
1995-06-26 Survey seining 1.0 0.01 lb 4
1995-06-26 Standard gill nets 1.0 (normal) 0.5 – 1.7 0.82 lb 4
1995-06-26 Standard trap nets 1.0 (normal) 0.4 – 1.7 0.22 lb 6
1990-06-25 Standard gill nets 0.8 (normal) 0.5 – 1.7 0.92 lb 3
1990-06-25 Standard trap nets 1.0 (normal) 0.4 – 1.7 0.52 lb 6
2011-06-13 Standard gill nets 0.7 (normal) 0.5 – 1.7 0.33 lb 4
2011-06-13 Backpack electrofishing 3.2 2
2011-06-13 Standard trap nets 2.0 (above normal) 0.4 – 1.7 0.40 lb 18
2018-06-11 Standard gill nets 0.2 (below normal) 0.5 – 1.7 0.09 lb 1
2018-06-11 Standard trap nets 0.9 (normal) 0.4 – 1.7 0.23 lb 8
2024-06-10 Standard gill nets 1.2 (normal) 0.5 – 1.7 0.12 lb 7
2024-06-10 Standard trap nets 0.2 (below normal) 0.4 – 1.7 0.09 lb 2

BCS

Date Gear CPUE Normal Range Total Catch
2018-06-26 50-ft beach seine 7.6 53
2022-07-25 50-ft beach seine 2.2 11
2011-06-13 Backpack electrofishing 23.8 15

BKF

Date Gear CPUE Normal Range Total Catch
2018-06-26 50-ft beach seine 3.3 23
2022-07-25 15-ft beach seine 2.0 2
2022-07-25 Backpack electrofishing 0.8 1
2022-07-25 50-ft beach seine 0.6 3
1995-06-26 Survey seining 2.0 8
2011-06-13 15-ft beach seine 0.5 2
2011-06-13 Backpack electrofishing 3.2 2

Hybrid Sunfish

Date Gear CPUE Normal Range Avg Weight Total Catch
2018-06-26 50-ft beach seine 0.6 4
2018-06-26 Backpack electrofishing 3.0 4
2022-07-25 Backpack electrofishing 0.8 1
2022-07-25 50-ft beach seine 0.2 1
2000-06-12 Survey seining 0.3 1
2000-06-12 Standard trap nets 1.7 0.25 lb 10
1995-06-26 Standard gill nets 0.3 0.48 lb 1
1995-06-26 Standard trap nets 4.5 0.21 lb 27
1990-06-25 Standard trap nets 0.3 0.40 lb 2
2011-06-13 Standard gill nets 0.2 0.53 lb 1
2011-06-13 Backpack electrofishing 3.2 2
2011-06-13 Standard trap nets 4.1 0.35 lb 37
2018-06-11 Standard trap nets 3.2 0.45 lb 29
2024-06-10 Standard trap nets 4.7 0.24 lb 42

Yellow Bullhead

Date Gear CPUE Normal Range Avg Weight Total Catch
2018-06-26 Backpack electrofishing 3.7 5
2000-06-12 Standard gill nets 6.5 (normal) 2.1 – 15.8 0.36 lb 26
2000-06-12 Standard trap nets 18.0 (above normal) 2.7 – 13.5 0.40 lb 108
1995-06-26 Standard gill nets 0.5 (below normal) 2.1 – 15.8 0.58 lb 2
1995-06-26 Standard trap nets 9.3 (normal) 2.7 – 13.5 0.44 lb 56
1990-06-25 Standard gill nets 4.5 (normal) 2.1 – 15.8 0.19 lb 18
1990-06-25 Standard trap nets 13.5 (normal) 2.7 – 13.5 0.44 lb 81
2011-06-13 Backpack electrofishing 3.2 2
2011-06-13 Standard trap nets 3.8 (normal) 2.7 – 13.5 0.50 lb 34
2011-06-13 Standard gill nets 4.0 (normal) 2.1 – 15.8 0.44 lb 24
2018-06-11 Standard gill nets 3.2 (normal) 2.1 – 15.8 0.61 lb 19
2018-06-11 Standard trap nets 6.4 (normal) 2.7 – 13.5 0.65 lb 58
2024-06-10 Standard gill nets 4.0 (normal) 2.1 – 15.8 0.36 lb 24
2024-06-10 Standard trap nets 2.3 (below normal) 2.7 – 13.5 0.39 lb 21

Smallmouth Bass

Date Gear CPUE Normal Range Total Catch
2018-06-26 50-ft beach seine 4.0 28
2018-06-26 Backpack electrofishing 3.0 4
2022-07-25 Backpack electrofishing 2.3 3
2022-07-25 50-ft beach seine 0.4 2

Iowa Darter

Date Gear CPUE Normal Range Total Catch
2018-06-26 50-ft beach seine 0.9 6
2018-06-26 Backpack electrofishing 0.7 1
2022-07-25 15-ft beach seine 3.0 3
2022-07-25 50-ft beach seine 0.8 4
2011-06-13 15-ft beach seine 0.3 1
2011-06-13 Backpack electrofishing 1.6 1

Fathead Minnow

Date Gear CPUE Normal Range Total Catch
2022-07-25 Backpack electrofishing 0.8 1

Black Crappie

Date Gear CPUE Normal Range Avg Weight Total Catch
2022-07-25 Backpack electrofishing 0.8 1
2000-06-12 Standard gill nets 0.3 (below normal) 1.0 – 3.9 0.27 lb 1
2000-06-12 Standard trap nets 0.2 (below normal) 0.8 – 4.0 0.28 lb 1
1990-06-25 Standard gill nets 2.5 (normal) 1.0 – 3.9 0.16 lb 10
1990-06-25 Standard trap nets 0.5 (below normal) 0.8 – 4.0 0.23 lb 3
2011-06-13 Standard gill nets 0.5 (below normal) 1.0 – 3.9 0.43 lb 3
2011-06-13 Backpack electrofishing 1.6 1
2011-06-13 Standard trap nets 0.7 (below normal) 0.8 – 4.0 0.37 lb 6
2018-06-11 Standard gill nets 0.7 (below normal) 1.0 – 3.9 0.06 lb 4
2018-06-11 Standard trap nets 1.6 (normal) 0.8 – 4.0 0.15 lb 14
2024-06-10 Standard gill nets 1.5 (normal) 1.0 – 3.9 0.18 lb 9
2024-06-10 Standard trap nets 0.1 (below normal) 0.8 – 4.0 0.32 lb 1

LES

Date Gear CPUE Normal Range Total Catch
2022-07-25 50-ft beach seine 0.2 1

Brown Bullhead

Date Gear CPUE Normal Range Avg Weight Total Catch
2000-06-12 Standard trap nets 0.5 (below normal) 0.6 – 2.6 0.57 lb 3
2000-06-12 Standard gill nets 2.3 (normal) 0.4 – 2.5 0.61 lb 9
1995-06-26 Standard trap nets 0.3 (below normal) 0.6 – 2.6 0.80 lb 2
1995-06-26 Standard gill nets 0.5 (normal) 0.4 – 2.5 0.90 lb 2
1990-06-25 Standard trap nets 1.0 (normal) 0.6 – 2.6 0.48 lb 6
2011-06-13 Standard gill nets 0.5 (normal) 0.4 – 2.5 0.65 lb 3
2011-06-13 Standard trap nets 0.2 (below normal) 0.6 – 2.6 0.70 lb 2
2018-06-11 Standard trap nets 0.4 (below normal) 0.6 – 2.6 1.13 lb 4
2018-06-11 Standard gill nets 0.7 (normal) 0.4 – 2.5 0.83 lb 4
2024-06-10 Standard trap nets 0.4 (below normal) 0.6 – 2.6 0.72 lb 4
2024-06-10 Standard gill nets 0.5 (normal) 0.4 – 2.5 0.57 lb 3

SLR

Date Gear CPUE Normal Range Avg Weight Total Catch
2000-06-12 Standard trap nets 0.2 1.82 lb 1

LKW

Date Gear CPUE Normal Range Avg Weight Total Catch
2000-06-12 Standard gill nets 0.3 2.29 lb 1
1995-06-26 Standard gill nets 1.5 2.45 lb 6
2011-06-13 Standard gill nets 0.3 2.23 lb 2
2018-06-11 Standard gill nets 1.3 3.91 lb 8
2024-06-10 Standard gill nets 0.7 2.43 lb 4

Walleye

Date Gear CPUE Normal Range Avg Weight Total Catch
2000-06-12 Standard gill nets 0.5 (normal) 0.5 – 2.3 2.28 lb 2
1995-06-26 Standard gill nets 0.8 (normal) 0.5 – 2.3 4.17 lb 3
1990-06-25 Standard gill nets 0.5 (normal) 0.5 – 2.3 0.50 lb 2
2011-06-13 Standard gill nets 0.3 (below normal) 0.5 – 2.3 3.71 lb 2
2011-06-13 Standard trap nets 0.2 (below normal) 0.3 – 0.5 4.00 lb 2
2018-06-11 Standard gill nets 0.5 (normal) 0.5 – 2.3 1.66 lb 3

Bowfin

Date Gear CPUE Normal Range Avg Weight Total Catch
2000-06-12 Standard gill nets 1.0 (normal) 0.3 – 1.0 4.82 lb 4
2000-06-12 Standard trap nets 1.0 (normal) 0.5 – 1.2 4.89 lb 6
1995-06-26 Standard trap nets 0.2 (below normal) 0.5 – 1.2 4.26 lb 1
1990-06-25 Standard trap nets 0.8 (normal) 0.5 – 1.2 4.70 lb 5
2011-06-13 Standard gill nets 0.3 (normal) 0.3 – 1.0 4.38 lb 2
2011-06-13 Standard trap nets 1.4 (above normal) 0.5 – 1.2 5.03 lb 13
2018-06-11 Standard trap nets 1.3 (above normal) 0.5 – 1.2 5.28 lb 12
2024-06-10 Standard gill nets 0.2 (below normal) 0.3 – 1.0 4.16 lb 1
2024-06-10 Standard trap nets 1.2 (above normal) 0.5 – 1.2 6.47 lb 11

Tullibee (Cisco)

Date Gear CPUE Normal Range Avg Weight Total Catch
2000-06-12 Standard gill nets 0.8 (below normal) 2.3 – 10.0 2.09 lb 3
1995-06-26 Standard gill nets 4.5 (normal) 2.3 – 10.0 0.65 lb 18
1990-06-25 Standard gill nets 5.5 (normal) 2.3 – 10.0 1.74 lb 22
2011-06-13 Standard gill nets 1.0 (below normal) 2.3 – 10.0 0.79 lb 6
2018-06-11 Standard gill nets 4.7 (normal) 2.3 – 10.0 1.12 lb 28
2024-06-10 Standard gill nets 0.2 (below normal) 2.3 – 10.0 0.28 lb 1

Black Bullhead

Date Gear CPUE Normal Range Avg Weight Total Catch
2000-06-12 Standard gill nets 2.5 (normal) 0.4 – 3.1 0.64 lb 10
1995-06-26 Standard trap nets 0.2 (below normal) 0.3 – 1.6 0.74 lb 1
1995-06-26 Standard gill nets 1.5 (normal) 0.4 – 3.1 0.72 lb 6
1990-06-25 Standard trap nets 0.2 (below normal) 0.3 – 1.6 0.50 lb 1
1990-06-25 Standard gill nets 0.3 (below normal) 0.4 – 3.1 0.60 lb 1

Sunfish

Date Gear CPUE Normal Range Total Catch
2011-06-13 Backpack electrofishing 1.6 1

Longnose Dace

Date Gear CPUE Normal Range Total Catch
2011-06-13 Backpack electrofishing 3.2 2

GRR

Date Gear CPUE Normal Range Avg Weight Total Catch
2011-06-13 Standard trap nets 0.1 8.07 lb 1

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Fish Species

Species known to inhabit Clamshell. Click any species for a full fishing guide.

Black CrappieBluegillBowfin (Dogfish)Brown BullheadGreen SunfishHybrid SunfishLake WhitefishLargemouth BassNorthern PikeNorthern SunfishPumpkinseedRock BassSmallmouth BassTullibee (Cisco)WalleyeWhite SuckerYellow BullheadYellow Perch

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Data sourced from Minnesota DNR Division of Fish and Wildlife. Last verified: March 19, 2026. Learn how we maintain this data.