Roy

Mahnomen County, Minnesota — DOW #44000100

211 Surveys
695.44
Acres
16 ft
Max Depth
0
13
Fish Species
0
Local Guides

DNR Fish Surveys

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

Black Bullhead

Date Gear CPUE Normal Range Avg Weight Total Catch
2002-07-15 Standard trap nets 0.1 (below normal) 1.1 – 17.4 0.17 lb 1
2002-07-15 Standard gill nets 0.1 (below normal) 1.9 – 57.5 0.73 lb 1
1992-07-13 Standard trap nets 0.4 (below normal) 1.1 – 17.4 0.50 lb 4
1992-07-13 Standard gill nets 0.8 (below normal) 1.9 – 57.5 0.70 lb 5
2012-07-23 Standard gill nets 0.3 (below normal) 1.9 – 57.5 0.60 lb 2
2007-07-02 Standard gill nets 0.1 (below normal) 1.9 – 57.5 0.40 lb 1
1987-07-13 Standard trap nets 0.3 (below normal) 1.1 – 17.4 0.30 lb 4
1987-07-13 Standard gill nets 0.5 (below normal) 1.9 – 57.5 3.67 lb 3
1974-07-22 Standard trap nets 3.7 (normal) 1.1 – 17.4 0.18 lb 33
1974-07-22 Standard gill nets 5.7 (normal) 1.9 – 57.5 0.13 lb 17

Brown Bullhead

Date Gear CPUE Normal Range Avg Weight Total Catch
2002-07-15 Standard trap nets 6.6 (normal) 1.5 – 9.8 0.33 lb 73
2002-07-15 Standard gill nets 25.2 (above normal) 1.5 – 9.9 0.36 lb 302
2022-07-18 Standard trap nets 0.5 (below normal) 1.5 – 9.8 0.66 lb 5
2022-07-18 Standard gill nets 1.1 (below normal) 1.5 – 9.9 0.97 lb 10
1954-08-05 Standard gill nets 34.8 (above normal) 1.5 – 9.9 0.27 lb 209
1954-08-05 Standard trap nets 11.5 (above normal) 1.5 – 9.8 0.30 lb 69
1992-07-13 Standard trap nets 0.1 (below normal) 1.5 – 9.8 0.50 lb 1
1992-07-13 Standard gill nets 1.5 (normal) 1.5 – 9.9 0.64 lb 9
2012-07-23 Standard gill nets 6.4 (normal) 1.5 – 9.9 0.62 lb 51
2017-07-17 Standard gill nets 2.8 (normal) 1.5 – 9.9 0.75 lb 25
2007-07-02 Standard trap nets 2.2 (normal) 1.5 – 9.8 0.50 lb 26
2007-07-02 Standard gill nets 6.4 (normal) 1.5 – 9.9 0.47 lb 77
1987-07-13 Standard trap nets 4.8 (normal) 1.5 – 9.8 0.29 lb 57
1987-07-13 Standard gill nets 2.0 (normal) 1.5 – 9.9 0.33 lb 12
1974-07-22 Standard trap nets 258.7 (above normal) 1.5 – 9.8 0.15 lb 2328
1974-07-22 Standard gill nets 46.3 (above normal) 1.5 – 9.9 0.14 lb 139

Yellow Perch

Date Gear CPUE Normal Range Avg Weight Total Catch
2002-07-15 Standard trap nets 2.5 (normal) 0.8 – 4.5 0.24 lb 27
2002-07-15 Standard gill nets 43.8 (above normal) 8.0 – 40.3 0.25 lb 525
2022-07-18 Standard trap nets 0.4 (below normal) 0.8 – 4.5 0.28 lb 4
2022-07-18 Standard gill nets 5.2 (below normal) 8.0 – 40.3 0.21 lb 47
1954-08-05 Standard trap nets 6.3 (above normal) 0.8 – 4.5 0.21 lb 38
1954-08-05 Standard gill nets 20.8 (normal) 8.0 – 40.3 0.16 lb 125
1992-07-13 Standard trap nets 2.8 (normal) 0.8 – 4.5 0.08 lb 31
1992-07-13 Standard gill nets 25.7 (normal) 8.0 – 40.3 0.11 lb 154
2012-07-23 Standard gill nets 0.4 (below normal) 8.0 – 40.3 0.10 lb 3
2023-07-17 Backpack electrofishing 2.3 4
2023-07-17 15-ft beach seine 0.5 1
2023-07-17 50-ft beach seine 30.5 244
2017-07-17 Standard trap nets 1.1 (normal) 0.8 – 4.5 0.07 lb 11
2017-07-17 Standard gill nets 10.4 (normal) 8.0 – 40.3 0.08 lb 94
2007-07-02 Standard trap nets 0.2 (below normal) 0.8 – 4.5 0.21 lb 2
2007-07-02 Standard gill nets 2.3 (below normal) 8.0 – 40.3 0.16 lb 28
1987-07-13 Standard trap nets 3.8 (normal) 0.8 – 4.5 0.11 lb 46
1987-07-13 Standard gill nets 8.0 (normal) 8.0 – 40.3 0.19 lb 48
1974-07-22 Standard trap nets 1.9 (normal) 0.8 – 4.5 0.22 lb 17
1974-07-22 Standard gill nets 1.7 (below normal) 8.0 – 40.3 0.33 lb 5

Yellow Bullhead

Date Gear CPUE Normal Range Avg Weight Total Catch
2002-07-15 Standard gill nets 5.8 (above normal) 0.6 – 5.0 0.42 lb 70
2002-07-15 Standard trap nets 5.0 (normal) 1.8 – 7.2 0.54 lb 55
2022-07-18 Standard gill nets 6.9 (above normal) 0.6 – 5.0 0.73 lb 62
2022-07-18 Standard trap nets 4.6 (normal) 1.8 – 7.2 0.67 lb 51
1992-07-13 Standard gill nets 66.0 (above normal) 0.6 – 5.0 0.39 lb 396
1992-07-13 Standard trap nets 29.1 (above normal) 1.8 – 7.2 0.37 lb 320
2012-07-23 Standard gill nets 8.1 (above normal) 0.6 – 5.0 0.55 lb 65
2023-07-17 50-ft beach seine 4.3 34
2017-07-17 Standard gill nets 10.4 (above normal) 0.6 – 5.0 0.58 lb 94
2017-07-17 Standard trap nets 8.1 (above normal) 1.8 – 7.2 0.54 lb 81
2007-07-02 Standard gill nets 44.2 (above normal) 0.6 – 5.0 0.45 lb 530
2007-07-02 Standard trap nets 11.3 (above normal) 1.8 – 7.2 0.39 lb 135
1987-07-13 Standard gill nets 12.2 (above normal) 0.6 – 5.0 0.48 lb 73
1987-07-13 Standard trap nets 24.8 (above normal) 1.8 – 7.2 0.41 lb 298
1974-07-22 Standard trap nets 2.3 (normal) 1.8 – 7.2 1.04 lb 21

Northern Pike

Date Gear CPUE Normal Range Avg Weight Total Catch
2002-07-15 Standard gill nets 8.0 (normal) 4.6 – 11.6 2.03 lb 96
2002-07-15 Standard trap nets 0.6 0.69 lb 6
2022-07-18 Standard gill nets 16.3 (above normal) 4.6 – 11.6 2.87 lb 147
2022-07-18 Standard trap nets 1.1 3.50 lb 12
1954-08-05 Standard gill nets 2.0 (below normal) 4.6 – 11.6 2.65 lb 12
1954-08-05 Standard trap nets 0.2 1.20 lb 1
1992-07-13 Standard gill nets 7.8 (normal) 4.6 – 11.6 3.34 lb 47
1992-07-13 Standard trap nets 0.3 1.37 lb 3
2012-07-23 Standard gill nets 12.8 (above normal) 4.6 – 11.6 1.97 lb 102
2017-07-17 Standard gill nets 13.0 (above normal) 4.6 – 11.6 3.04 lb 117
2017-07-17 Standard trap nets 0.7 2.77 lb 7
2007-07-02 Standard gill nets 19.9 (above normal) 4.6 – 11.6 2.22 lb 239
2007-07-02 Standard trap nets 1.3 2.38 lb 15
1987-07-13 Standard gill nets 8.7 (normal) 4.6 – 11.6 2.36 lb 52
1987-07-13 Standard trap nets 0.2 2.60 lb 2
1974-07-22 Standard gill nets 4.7 (normal) 4.6 – 11.6 1.22 lb 14
1974-07-22 Standard trap nets 0.7 1.25 lb 6

Common Carp

Date Gear CPUE Normal Range Avg Weight Total Catch
2002-07-15 Standard trap nets 0.3 (below normal) 0.3 – 1.4 7.99 lb 3
2022-07-18 Standard gill nets 0.8 (normal) 0.3 – 1.3 2.68 lb 7
2022-07-18 Standard trap nets 0.3 (below normal) 0.3 – 1.4 0.77 lb 3
1992-07-13 Standard gill nets 0.3 (normal) 0.3 – 1.3 2.80 lb 2
1992-07-13 Standard trap nets 0.7 (normal) 0.3 – 1.4 4.00 lb 8
2017-07-17 Standard trap nets 0.4 (normal) 0.3 – 1.4 11.26 lb 4
2007-07-02 Standard gill nets 0.1 (below normal) 0.3 – 1.3 2.16 lb 1
2007-07-02 Standard trap nets 0.1 (below normal) 0.3 – 1.4 5.25 lb 1

Walleye

Date Gear CPUE Normal Range Avg Weight Total Catch
2002-07-15 Standard gill nets 7.9 (above normal) 1.5 – 5.8 1.65 lb 95
2002-07-15 Standard trap nets 0.6 (normal) 0.3 – 0.8 2.26 lb 6
2022-07-18 Standard gill nets 4.7 (normal) 1.5 – 5.8 1.76 lb 42
2022-07-18 Standard trap nets 0.1 (below normal) 0.3 – 0.8 0.60 lb 1
1954-08-05 Standard gill nets 14.2 (above normal) 1.5 – 5.8 1.20 lb 85
1954-08-05 Standard trap nets 2.7 (above normal) 0.3 – 0.8 2.10 lb 16
1992-07-13 Standard gill nets 0.5 (below normal) 1.5 – 5.8 18.87 lb 3
1992-07-13 Standard trap nets 0.3 (below normal) 0.3 – 0.8 0.27 lb 3
2012-07-23 Standard gill nets 7.5 (above normal) 1.5 – 5.8 1.58 lb 60
2017-07-17 Standard gill nets 4.2 (normal) 1.5 – 5.8 1.64 lb 38
2017-07-17 Standard trap nets 0.1 (below normal) 0.3 – 0.8 7.64 lb 1
2007-07-02 Standard gill nets 7.8 (above normal) 1.5 – 5.8 1.86 lb 93
1987-07-13 Standard gill nets 6.8 (above normal) 1.5 – 5.8 2.05 lb 41
1987-07-13 Standard trap nets 0.2 (below normal) 0.3 – 0.8 0.10 lb 2
1974-07-22 Standard gill nets 7.7 (above normal) 1.5 – 5.8 0.66 lb 23
1974-07-22 Standard trap nets 0.6 (normal) 0.3 – 0.8 1.20 lb 5

Hybrid Sunfish

Date Gear CPUE Normal Range Avg Weight Total Catch
2002-07-15 Standard trap nets 0.3 0.27 lb 3
2022-07-18 Standard gill nets 1.0 0.19 lb 9
2022-07-18 Standard trap nets 5.9 0.23 lb 65
1992-07-13 Standard trap nets 1.8 0.22 lb 20
2023-07-17 15-ft beach seine 1.0 2
2023-07-17 50-ft beach seine 1.0 8
2023-07-17 Backpack electrofishing 4.6 8
2017-07-17 Standard gill nets 1.0 0.19 lb 9
2017-07-17 Standard trap nets 3.2 0.13 lb 32
2007-07-02 Standard gill nets 0.1 0.33 lb 1
2007-07-02 Standard trap nets 0.4 0.25 lb 5

Largemouth Bass

Date Gear CPUE Normal Range Avg Weight Total Catch
2002-07-15 Standard gill nets 0.1 (below normal) 0.3 – 1.3 0.11 lb 1
2002-07-15 Standard trap nets 1.3 (above normal) 0.3 – 0.9 0.28 lb 14
2022-07-18 Standard gill nets 2.6 (above normal) 0.3 – 1.3 1.48 lb 23
2022-07-18 Standard trap nets 0.9 (above normal) 0.3 – 0.9 1.01 lb 10
1954-08-05 Standard trap nets 0.2 (below normal) 0.3 – 0.9 1.20 lb 1
1992-07-13 Standard gill nets 6.7 (above normal) 0.3 – 1.3 1.09 lb 40
1992-07-13 Standard trap nets 3.2 (above normal) 0.3 – 0.9 0.36 lb 35
2012-07-23 Standard electrofishing 18.6 1.18 lb 25
2012-07-23 Standard gill nets 7.5 (above normal) 0.3 – 1.3 1.34 lb 60
2023-07-17 Backpack electrofishing 53.7 94
2023-07-17 15-ft beach seine 28.0 56
2023-07-17 50-ft beach seine 26.9 215
2017-07-17 Standard gill nets 6.2 (above normal) 0.3 – 1.3 1.55 lb 56
2017-07-17 Standard trap nets 2.5 (above normal) 0.3 – 0.9 0.78 lb 25
2007-07-02 Standard gill nets 7.4 (above normal) 0.3 – 1.3 1.06 lb 89
2007-07-02 Standard trap nets 1.7 (above normal) 0.3 – 0.9 0.65 lb 20
1987-07-13 Standard gill nets 8.3 (above normal) 0.3 – 1.3 0.99 lb 50
1987-07-13 Standard trap nets 7.8 (above normal) 0.3 – 0.9 0.26 lb 94
1974-07-22 Standard trap nets 0.9 (normal) 0.3 – 0.9 0.57 lb 8

Bluegill

Date Gear CPUE Normal Range Avg Weight Total Catch
2002-07-15 Standard gill nets 5.0 0.20 lb 60
2002-07-15 Standard trap nets 43.5 (above normal) 2.5 – 25.0 0.09 lb 478
2022-07-18 Standard gill nets 78.7 0.17 lb 708
2022-07-18 Standard trap nets 102.8 (above normal) 2.5 – 25.0 0.05 lb 1131
1992-07-13 Standard gill nets 125.0 0.15 lb 750
1992-07-13 Standard trap nets 92.3 (above normal) 2.5 – 25.0 0.15 lb 1015
2012-07-23 Standard gill nets 35.9 0.09 lb 287
2023-07-17 Backpack electrofishing 8.6 15
2023-07-17 15-ft beach seine 2.5 5
2023-07-17 50-ft beach seine 6.8 54
2017-07-17 Standard gill nets 39.2 0.08 lb 353
2017-07-17 Standard trap nets 51.6 (above normal) 2.5 – 25.0 0.05 lb 516
2007-07-02 Standard gill nets 33.0 0.09 lb 396
2007-07-02 Standard trap nets 30.7 (above normal) 2.5 – 25.0 0.08 lb 368
1987-07-13 Standard gill nets 20.3 0.10 lb 122
1987-07-13 Standard trap nets 57.5 (above normal) 2.5 – 25.0 0.09 lb 690
1974-07-22 Standard trap nets 1.3 (below normal) 2.5 – 25.0 0.35 lb 12

Pumpkinseed

Date Gear CPUE Normal Range Avg Weight Total Catch
2002-07-15 Standard gill nets 37.5 0.15 lb 450
2002-07-15 Standard trap nets 47.3 (above normal) 1.4 – 8.6 0.06 lb 520
2022-07-18 Standard gill nets 12.1 0.18 lb 109
2022-07-18 Standard trap nets 10.0 (above normal) 1.4 – 8.6 0.21 lb 110
1992-07-13 Standard gill nets 11.7 0.12 lb 70
1992-07-13 Standard trap nets 41.0 (above normal) 1.4 – 8.6 0.11 lb 451
2012-07-23 Standard gill nets 8.3 0.11 lb 66
2023-07-17 Backpack electrofishing 5.7 10
2023-07-17 50-ft beach seine 0.8 6
2017-07-17 Standard gill nets 5.7 0.11 lb 51
2017-07-17 Standard trap nets 2.5 (normal) 1.4 – 8.6 0.10 lb 25
2007-07-02 Standard gill nets 44.6 0.13 lb 535
2007-07-02 Standard trap nets 10.7 (above normal) 1.4 – 8.6 0.14 lb 128
1987-07-13 Standard gill nets 43.8 0.13 lb 263
1987-07-13 Standard trap nets 23.4 (above normal) 1.4 – 8.6 0.13 lb 281
1974-07-22 Standard trap nets 20.6 (above normal) 1.4 – 8.6 0.19 lb 185

White Sucker

Date Gear CPUE Normal Range Avg Weight Total Catch
2002-07-15 Standard gill nets 2.1 (normal) 1.0 – 5.5 1.60 lb 25
2002-07-15 Standard trap nets 0.1 (below normal) 0.4 – 1.5 3.97 lb 1
2022-07-18 Standard gill nets 0.3 (below normal) 1.0 – 5.5 2.53 lb 3
1954-08-05 Standard gill nets 0.8 (below normal) 1.0 – 5.5 1.08 lb 5
1992-07-13 Standard gill nets 1.2 (normal) 1.0 – 5.5 2.76 lb 7
2012-07-23 Standard gill nets 1.4 (normal) 1.0 – 5.5 2.78 lb 11
2017-07-17 Standard gill nets 1.3 (normal) 1.0 – 5.5 2.87 lb 12
2007-07-02 Standard gill nets 1.9 (normal) 1.0 – 5.5 2.41 lb 23
2007-07-02 Standard trap nets 0.1 (below normal) 0.4 – 1.5 2.09 lb 1
1987-07-13 Standard gill nets 2.7 (normal) 1.0 – 5.5 2.20 lb 16
1974-07-22 Standard gill nets 0.3 (below normal) 1.0 – 5.5 2.50 lb 1
1974-07-22 Standard trap nets 1.0 (normal) 0.4 – 1.5 3.17 lb 9

Black Crappie

Date Gear CPUE Normal Range Avg Weight Total Catch
2002-07-15 Standard gill nets 0.3 (below normal) 1.0 – 7.3 1.02 lb 3
2022-07-18 Standard gill nets 10.9 (above normal) 1.0 – 7.3 0.25 lb 98
2022-07-18 Standard trap nets 8.1 (above normal) 0.8 – 6.5 0.32 lb 89
1954-08-05 Standard gill nets 0.2 (below normal) 1.0 – 7.3 0.12 lb 1
1954-08-05 Standard trap nets 1.0 (normal) 0.8 – 6.5 0.80 lb 6
1992-07-13 Standard gill nets 5.7 (normal) 1.0 – 7.3 0.15 lb 34
1992-07-13 Standard trap nets 0.4 (below normal) 0.8 – 6.5 0.20 lb 4
2012-07-23 Standard gill nets 9.6 (above normal) 1.0 – 7.3 0.12 lb 77
2012-07-23 Standard electrofishing 23.7 0.30 lb 32
2023-07-17 Backpack electrofishing 2.9 5
2023-07-17 15-ft beach seine 15.5 31
2023-07-17 50-ft beach seine 28.6 229
2017-07-17 Standard gill nets 4.2 (normal) 1.0 – 7.3 0.14 lb 38
2017-07-17 Standard trap nets 1.2 (normal) 0.8 – 6.5 0.29 lb 12
2007-07-02 Standard gill nets 7.0 (normal) 1.0 – 7.3 0.12 lb 84
2007-07-02 Standard trap nets 11.8 (above normal) 0.8 – 6.5 0.14 lb 141
1987-07-13 Standard gill nets 1.8 (normal) 1.0 – 7.3 0.18 lb 11
1987-07-13 Standard trap nets 1.8 (normal) 0.8 – 6.5 0.13 lb 22
1974-07-22 Standard gill nets 1.3 (normal) 1.0 – 7.3 0.46 lb 4
1974-07-22 Standard trap nets 1.0 (normal) 0.8 – 6.5 0.32 lb 9

Rock Bass

Date Gear CPUE Normal Range Avg Weight Total Catch
1954-08-05 Standard trap nets 0.2 (below normal) 0.3 – 1.4 0.60 lb 1

Smallmouth Bass

Date Gear CPUE Normal Range Avg Weight Total Catch
1954-08-05 Standard trap nets 0.2 3.00 lb 1

CNM

Date Gear CPUE Normal Range Total Catch
2023-07-17 Backpack electrofishing 5.1 9

BNS

Date Gear CPUE Normal Range Total Catch
2023-07-17 50-ft beach seine 1.6 13

Green Sunfish

Date Gear CPUE Normal Range Avg Weight Total Catch
2023-07-17 Backpack electrofishing 6.9 12
2023-07-17 50-ft beach seine 0.1 1
1974-07-22 Standard trap nets 0.1 (below normal) 0.3 – 1.5 0.80 lb 1

Tadpole Madtom

Date Gear CPUE Normal Range Total Catch
2023-07-17 Backpack electrofishing 0.6 1
2023-07-17 50-ft beach seine 0.3 2

Iowa Darter

Date Gear CPUE Normal Range Total Catch
2023-07-17 15-ft beach seine 3.0 6
2023-07-17 50-ft beach seine 5.8 46
2023-07-17 Backpack electrofishing 26.9 47

Bluntnose Minnow

Date Gear CPUE Normal Range Total Catch
2023-07-17 50-ft beach seine 0.1 1

BST

Date Gear CPUE Normal Range Total Catch
2023-07-17 15-ft beach seine 0.5 1

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Fish Species

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

Black CrappieBluegillBrown BullheadCommon CarpGreen SunfishHybrid SunfishLargemouth BassNorthern PikePumpkinseedWalleyeWhite 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.