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Bowman-Haley Dam
Bowman County

June 2026
Percent of the total catch for each length category (inches)
 
2025
Survey Year
Percent
Catch
1-6 7-8 9-10 11-12 13-15 16-20 21-25 26-30 31-35 36-40 41-45 > 45
Black Bullhead 37.8 - 1 96 3 - - - - - - - -
Common Carp 16.8 2 - - - - 66 16 16 - - - -
White Bass 12.2 - - 2 18 80 - - - - - - -
Shorthead Redhorse 6.8 - - - - 4 96 - - - - - -
Yellow Perch 6.8 - 28 72 - - - - - - - - -
Smallmouth Bass 4.9 - 50 28 11 6 6 - - - - - -
Northern Pike 4.6 - - - - - 18 12 29 41 - - -
Walleye 4.1 - - 7 13 20 20 27 13 - - - -
River Carpsucker 3.8 - - - - 7 - 86 7 - - - -
White Sucker 1.9 - - - 14 57 29 - - - - - -
Black Crappie 0.3 - 100 - - - - - - - - - -
Channel Catfish 0.3 - - - - 100 - - - - - - -
 
 
2024
Survey Year
Percent
Catch
1-6 7-8 9-10 11-12 13-15 16-20 21-25 26-30 31-35 36-40 41-45 > 45
Black Bullhead 45.0 5 86 9 - - - - - - - - -
Common Carp 14.0 - 2 - 5 62 21 3 8 - - - -
White Bass 11.3 2 - 14 27 57 - - - - - - -
Northern Pike 8.0 - - - - - 19 33 31 14 3 - -
Shorthead Redhorse 7.3 - - - - 15 85 - - - - - -
Yellow Perch 5.8 - 69 27 4 - - - - - - - -
Walleye 3.5 - - 12 12 19 38 12 6 - - - -
Smallmouth Bass 2.7 75 8 8 - - 8 - - - - - -
River Carpsucker 0.9 - - - - - - 100 - - - - -
White Sucker 0.9 - - - - 25 75 - - - - - -
Black Crappie 0.7 - 100 - - - - - - - - - -
 
 
2023
Survey Year
Percent
Catch
1-6 7-8 9-10 11-12 13-15 16-20 21-25 26-30 31-35 36-40 41-45 > 45
Black Bullhead 29.5 38 59 - 3 - - - - - - - -
Shorthead Redhorse 16.3 - - - - 44 56 - - - - - -
White Bass 13.8 - 14 - - 86 - - - - - - -
Common Carp 13.5 - 5 29 10 7 29 7 14 - - - -
Walleye 10.0 - 6 6 12 22 47 6 - - - - -
Yellow Perch 9.1 24 38 31 7 - - - - - - - -
River Carpsucker 2.5 - - - - - 25 75 - - - - -
White Sucker 1.9 - - - 17 17 67 - - - - - -
Northern Pike 1.6 - - - - 40 20 20 20 - - - -
Smallmouth Bass 0.9 33 - - 67 - - - - - - - -
Black Crappie 0.6 100 - - - - - - - - - - -
Channel Catfish 0.3 - - - - - - - 100 - - - -
 
 
2022
Survey Year
Percent
Catch
1-6 7-8 9-10 11-12 13-15 16-20 21-25 26-30 31-35 36-40 41-45 > 45
Shorthead Redhorse 23.3 - - 5 14 35 47 - - - - - -
White Bass 19.7 - - - 8 92 - - - - - - -
Common Carp 16.1 - 3 3 16 13 13 19 32 - - - -
Walleye 9.3 - - - 17 61 6 11 6 - - - -
Black Bullhead 8.8 - - 76 24 - - - - - - - -
Smallmouth Bass 8.8 - 18 59 12 6 6 - - - - - -
River Carpsucker 7.3 - - - - - 25 75 - - - - -
White Sucker 3.6 - - - - 43 57 - - - - - -
Northern Pike 1.6 - - - - - 33 33 - 33 - - -
Yellow Perch 1.6 33 33 33 - - - - - - - - -
 
 
2021
Survey Year
Percent
Catch
1-6 7-8 9-10 11-12 13-15 16-20 21-25 26-30 31-35 36-40 41-45 > 45
Black Bullhead 42.9 - 10 83 6 1 - - - - - - -
White Bass 26.8 - - - 15 85 - - - - - - -
Shorthead Redhorse 8.4 - 7 9 2 - 82 - - - - - -
Northern Pike 4.5 - - - - 4 38 29 17 4 8 - -
Walleye 4.5 - - 4 29 29 17 12 8 - - - -
River Carpsucker 3.7 - - - - - 37 58 5 - - - -
Common Carp 3.7 - - - 11 11 16 11 47 5 - - -
Smallmouth Bass 2.4 - 38 31 15 15 - - - - - - -
Yellow Perch 1.5 12 25 62 - - - - - - - - -
White Sucker 1.5 - - - 12 50 38 - - - - - -
Green Sunfish 0.2 100 - - - - - - - - - - -
 
 
2020
Survey Year
Percent
Catch
1-6 7-8 9-10 11-12 13-15 16-20 21-25 26-30 31-35 36-40 41-45 > 45
Walleye 18.3 - - 26 24 26 13 9 2 - - - -
Common Carp 17.5 - - - - 6 19 53 22 - - - -
White Bass 16.3 - 2 - 20 78 - - - - - - -
Black Bullhead 12.5 10 47 7 33 3 - - - - - - -
Yellow Perch 7.8 11 74 16 - - - - - - - - -
Shorthead Redhorse 7.0 - - - - - 100 - - - - - -
River Carpsucker 5.4 - - - - - 64 36 - - - - -
Bluegill 4.7 - - - - - - - - - - - -
Northern Pike 4.7 - - - - - 50 10 20 20 - - -
Smallmouth Bass 4.3 18 - 18 9 45 9 - - - - - -
White Sucker 1.6 - - - - - 100 - - - - - -
 
 
2019
Survey Year
Percent
Catch
1-6 7-8 9-10 11-12 13-15 16-20 21-25 26-30 31-35 36-40 41-45 > 45
Shorthead Redhorse 22.3 - - - - - 100 - - - - - -
White Bass 21.7 - - - 29 71 - - - - - - -
Common Carp 15.3 - 4 - 4 - 4 38 50 - - - -
Smallmouth Bass 9.6 - 7 13 40 40 - - - - - - -
Walleye 9.6 - - 7 40 20 13 20 - - - - -
Black Bullhead 8.3 - - 8 92 - - - - - - - -
Northern Pike 5.7 - - - 11 11 22 - 33 11 11 - -
River Carpsucker 4.5 - - - - - 60 40 - - - - -
White Sucker 1.9 - - - - 100 - - - - - - -
Green Sunfish 0.6 100 - - - - - - - - - - -
Yellow Perch 0.6 - - 100 - - - - - - - - -
 
 
2018
Survey Year
Percent
Catch
1-6 7-8 9-10 11-12 13-15 16-20 21-25 26-30 31-35 36-40 41-45 > 45
Shorthead Redhorse 25.3 - - - - 1 99 - - - - - -
Black Bullhead 23.8 - - 3 92 6 - - - - - - -
White Bass 13.5 - - - 43 57 - - - - - - -
Common Carp 11.5 - - - - 2 42 44 7 5 - - -
Smallmouth Bass 9.5 - 5 26 29 37 3 - - - - - -
Walleye 6.5 - 4 12 38 19 15 8 4 - - - -
River Carpsucker 2.5 - - - - - 70 30 - - - - -
Northern Pike 2.5 - - - - - - 10 40 30 20 - -
Black Crappie 1.8 - - 86 14 - - - - - - - -
White Sucker 1.5 - - - - 17 83 - - - - - -
Yellow Perch 1.3 - - 60 40 - - - - - - - -
Hybrid Sunfish 0.5 100 - - - - - - - - - - -
 
 
2017
Survey Year
Percent
Catch
1-6 7-8 9-10 11-12 13-15 16-20 21-25 26-30 31-35 36-40 41-45 > 45
Black Bullhead 28.1 - 1 20 79 - - - - - - - -
White Bass 19.7 - - 18 21 61 - - - - - - -
Common Carp 18.3 - - - - 14 63 17 6 - - - -
Shorthead Redhorse 13.3 - - - - 6 94 - - - - - -
Walleye 7.0 - - 25 6 19 31 11 8 - - - -
River Carpsucker 3.9 - - - - 11 53 37 - - - - -
Northern Pike 3.9 - - - - - 15 45 25 10 - 5 -
Smallmouth Bass 2.9 - 13 13 33 33 7 - - - - - -
White Sucker 1.4 - - - - - 100 - - - - - -
Black Crappie 1.0 - - 60 40 - - - - - - - -
Yellow Perch 0.4 - - 50 50 - - - - - - - -
Green Sunfish 0.2 100 - - - - - - - - - - -
 
 
2016
Survey Year
Percent
Catch
1-6 7-8 9-10 11-12 13-15 16-20 21-25 26-30 31-35 36-40 41-45 > 45
Black Bullhead 27.2 - 4 62 33 1 - - - - - - -
Common Carp 15.6 - - - - 26 63 7 5 - - - -
White Bass 12.6 3 10 1 53 33 - - - - - - -
Shorthead Redhorse 11.4 - - - - 63 37 - - - - - -
Walleye 11.4 - 6 14 9 9 22 35 5 - - - -
Northern Pike 6.8 - - - - - 5 49 26 18 3 - -
Smallmouth Bass 4.6 - 4 23 62 12 - - - - - - -
River Carpsucker 3.0 - - - - 24 12 65 - - - - -
Green Sunfish 3.0 47 53 - - - - - - - - - -
White Sucker 2.1 - - - - - 100 - - - - - -
Yellow Perch 0.9 - 40 20 40 - - - - - - - -
Bluegill 0.7 25 50 25 - - - - - - - - -
Black Crappie 0.5 - 33 67 - - - - - - - - -
Gizzard Shad 0.2 - - 100 - - - - - - - - -
 
 
2015
Survey Year
Percent
Catch
1-6 7-8 9-10 11-12 13-15 16-20 21-25 26-30 31-35 36-40 41-45 > 45
Black Bullhead 28.3 1 36 28 35 - - - - - - - -
Common Carp 17.5 - - 4 10 29 27 11 19 - - - -
Walleye 13.9 - 29 3 2 10 39 13 5 - - - -
White Bass 10.8 - - 17 62 19 2 - - - - - -
Northern Pike 9.4 - - - - - 10 29 33 29 - - -
Shorthead Redhorse 5.8 - - 4 4 88 4 - - - - - -
Yellow Perch 3.1 7 14 64 14 - - - - - - - -
White Sucker 2.7 - - - - 8 92 - - - - - -
Smallmouth Bass 2.7 - 17 50 25 8 - - - - - - -
Green Sunfish 2.5 100 - - - - - - - - - - -
River Carpsucker 2.0 - - - - - 25 75 - - - - -
Gizzard Shad 0.4 - - - - - 100 - - - - - -
Bluegill 0.4 50 50 - - - - - - - - - -
Black Crappie 0.2 - 100 - - - - - - - - - -
 
 
 
 
Length of Species Sampled - All Gears Combined
** May Contain Fish Not Measured