South Oscar

Douglas County, Minnesota — DOW #21025702

227 Surveys

Invasive Species Alert

South Oscar has confirmed populations of:

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996.79
Acres
25 ft
Max Depth
13 ft
Mean Depth
13
Fish Species
5
Local Guides

DNR Fish Surveys

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

Black Bullhead

Date Gear CPUE Normal Range Avg Weight Total Catch
1994-08-01 Standard trap nets 1.7 (normal) 1.5 – 58.0 0.72 lb 20
1994-08-01 Standard gill nets 2.7 (below normal) 7.7 – 104.7 0.63 lb 32
1998-07-27 Standard trap nets 2.2 (normal) 1.5 – 58.0 0.57 lb 26
1998-07-27 Standard gill nets 1.5 (below normal) 7.7 – 104.7 0.51 lb 18
2006-07-31 Standard trap nets 4.3 (normal) 1.5 – 58.0 0.90 lb 52
2006-07-31 Standard gill nets 0.9 (below normal) 7.7 – 104.7 1.05 lb 11
2014-07-28 Standard trap nets 0.4 (below normal) 1.5 – 58.0 0.65 lb 5
1987-08-03 Standard trap nets 1.3 (below normal) 1.5 – 58.0 0.56 lb 14
1987-08-03 Standard gill nets 15.7 (normal) 7.7 – 104.7 0.44 lb 94
1983-07-18 Standard trap nets 0.6 (below normal) 1.5 – 58.0 0.31 lb 8
1983-07-18 Standard gill nets 5.0 (below normal) 7.7 – 104.7 0.33 lb 40

Yellow Perch

Date Gear CPUE Normal Range Avg Weight Total Catch
1994-08-01 Standard trap nets 5.8 (above normal) 0.4 – 2.8 0.20 lb 69
1994-08-01 Survey seining 54.6 273
1994-08-01 Standard gill nets 22.6 (above normal) 2.0 – 22.3 0.23 lb 271
1998-07-27 Standard trap nets 0.9 (normal) 0.4 – 2.8 0.15 lb 11
1998-07-27 Standard gill nets 22.9 (above normal) 2.0 – 22.3 0.18 lb 275
2006-07-31 Standard trap nets 2.2 (normal) 0.4 – 2.8 0.11 lb 26
2006-07-31 Standard gill nets 88.1 (above normal) 2.0 – 22.3 0.04 lb 1057
2014-07-28 Standard trap nets 0.3 (below normal) 0.4 – 2.8 0.12 lb 3
2014-07-28 Standard gill nets 14.8 (normal) 2.0 – 22.3 0.14 lb 177
2018-08-20 Backpack electrofishing 6.3 13
2018-08-20 50-ft beach seine 8.5 68
1987-08-03 Standard trap nets 0.9 (normal) 0.4 – 2.8 0.10 lb 10
1987-08-03 Standard gill nets 36.0 (above normal) 2.0 – 22.3 0.10 lb 216
2018-07-30 Standard trap nets 0.2 (below normal) 0.4 – 2.8 0.12 lb 2
2018-07-30 Standard gill nets 18.8 (normal) 2.0 – 22.3 0.17 lb 226
2022-08-01 Standard trap nets 0.1 (below normal) 0.4 – 2.8 0.10 lb 1
2022-08-01 Standard gill nets 8.5 (normal) 2.0 – 22.3 0.15 lb 102
1983-07-18 Standard trap nets 1.1 (normal) 0.4 – 2.8 0.08 lb 16
1983-07-18 Standard gill nets 61.4 (above normal) 2.0 – 22.3 0.10 lb 491

Spottail Shiner

Date Gear CPUE Normal Range Total Catch
1994-08-01 Survey seining 33.4 167

Yellow Bullhead

Date Gear CPUE Normal Range Avg Weight Total Catch
1994-08-01 Standard gill nets 0.6 (normal) 0.5 – 5.0 1.23 lb 7
1994-08-01 Standard trap nets 2.0 (normal) 1.0 – 7.1 1.02 lb 24
1998-07-27 Standard gill nets 1.7 (normal) 0.5 – 5.0 1.05 lb 20
1998-07-27 Standard trap nets 2.4 (normal) 1.0 – 7.1 0.73 lb 29
2006-07-31 Standard gill nets 1.6 (normal) 0.5 – 5.0 1.19 lb 19
2006-07-31 Standard trap nets 2.0 (normal) 1.0 – 7.1 0.91 lb 24
2014-07-28 Standard gill nets 1.2 (normal) 0.5 – 5.0 0.85 lb 14
2014-07-28 Standard trap nets 3.2 (normal) 1.0 – 7.1 0.76 lb 38
2018-08-20 Backpack electrofishing 4.8 10
1987-08-03 Standard gill nets 1.3 (normal) 0.5 – 5.0 0.85 lb 8
1987-08-03 Standard trap nets 1.6 (normal) 1.0 – 7.1 0.59 lb 17
2018-07-30 Standard gill nets 0.8 (normal) 0.5 – 5.0 1.13 lb 10
2018-07-30 Standard trap nets 0.3 (below normal) 1.0 – 7.1 1.10 lb 3
2022-08-01 Standard gill nets 4.6 (normal) 0.5 – 5.0 0.85 lb 55
2022-08-01 Standard trap nets 0.3 (below normal) 1.0 – 7.1 0.74 lb 4
1983-07-18 Standard gill nets 3.6 (normal) 0.5 – 5.0 0.87 lb 29
1983-07-18 Standard trap nets 9.1 (above normal) 1.0 – 7.1 0.72 lb 128

Northern Pike

Date Gear CPUE Normal Range Avg Weight Total Catch
1994-08-01 Standard gill nets 0.2 (below normal) 2.0 – 10.8 5.51 lb 2
1994-08-01 Standard trap nets 0.2 3.64 lb 2
1998-07-27 Standard gill nets 1.2 (below normal) 2.0 – 10.8 2.84 lb 14
1998-07-27 Standard trap nets 0.3 1.26 lb 3
2006-07-31 Standard gill nets 2.4 (normal) 2.0 – 10.8 2.98 lb 29
2006-07-31 Standard trap nets 0.7 1.89 lb 8
2014-07-28 Standard gill nets 3.8 (normal) 2.0 – 10.8 2.68 lb 45
2014-07-28 Standard trap nets 0.8 1.35 lb 9
2018-08-20 50-ft beach seine 0.3 2
1987-08-03 Standard gill nets 3.5 (normal) 2.0 – 10.8 2.11 lb 21
1987-08-03 Standard trap nets 0.6 2.40 lb 7
2018-07-30 Standard gill nets 4.5 (normal) 2.0 – 10.8 2.40 lb 54
2018-07-30 Standard trap nets 0.2 5.57 lb 2
2022-08-01 Standard gill nets 7.8 (normal) 2.0 – 10.8 2.63 lb 93
2022-08-01 Standard trap nets 0.5 2.73 lb 6
1983-07-18 Standard gill nets 5.9 (normal) 2.0 – 10.8 2.03 lb 47
1983-07-18 Standard trap nets 0.6 2.50 lb 9

BKF

Date Gear CPUE Normal Range Total Catch
1994-08-01 Survey seining 2.8 14
2018-08-20 50-ft beach seine 3.1 25
2018-08-20 Backpack electrofishing 66.4 137

Fathead Minnow

Date Gear CPUE Normal Range Total Catch
1994-08-01 Survey seining 5.6 28

Common Carp

Date Gear CPUE Normal Range Avg Weight Total Catch
1994-08-01 Standard gill nets 0.4 (below normal) 0.8 – 4.3 6.50 lb 5
1994-08-01 Standard trap nets 0.5 (normal) 0.4 – 2.4 5.28 lb 6
1998-07-27 Standard gill nets 0.3 (below normal) 0.8 – 4.3 4.54 lb 4
1998-07-27 Standard trap nets 0.3 (below normal) 0.4 – 2.4 4.67 lb 3
2006-07-31 Standard gill nets 0.1 (below normal) 0.8 – 4.3 0.05 lb 1
2006-07-31 Standard trap nets 0.1 (below normal) 0.4 – 2.4 7.20 lb 1
2014-07-28 Standard trap nets 0.2 (below normal) 0.4 – 2.4 9.00 lb 2
1987-08-03 Standard gill nets 2.3 (normal) 0.8 – 4.3 3.87 lb 14
1987-08-03 Standard trap nets 0.3 (below normal) 0.4 – 2.4 5.33 lb 3
1983-07-18 Standard gill nets 0.5 (below normal) 0.8 – 4.3 5.33 lb 4
1983-07-18 Standard trap nets 0.1 (below normal) 0.4 – 2.4 1.00 lb 1

Largemouth Bass

Date Gear CPUE Normal Range Avg Weight Total Catch
1994-08-01 Standard electrofishing 16.6 2.15 lb 31
1994-08-01 Survey seining 4.4 22
1998-07-27 Standard electrofishing 37.3 1.35 lb 56
1998-07-27 Standard gill nets 0.1 (below normal) 0.3 – 0.6 0.69 lb 1
1998-07-27 Standard trap nets 0.2 (below normal) 0.2 – 0.8 1.74 lb 2
2006-07-31 Standard electrofishing 69.5 1.20 lb 44
2006-07-31 Standard gill nets 1.2 (above normal) 0.3 – 0.6 1.00 lb 14
2006-07-31 Standard trap nets 0.3 (normal) 0.2 – 0.8 1.06 lb 4
2014-07-28 Standard electrofishing 50.4 0.95 lb 41
2014-07-28 Standard gill nets 0.3 (below normal) 0.3 – 0.6 0.47 lb 3
2018-08-20 Backpack electrofishing 37.3 77
2018-08-20 15-ft beach seine 18.0 36
2018-08-20 50-ft beach seine 51.4 411
1987-08-03 Standard gill nets 0.5 (normal) 0.3 – 0.6 0.77 lb 3
1987-08-03 Standard trap nets 0.6 (normal) 0.2 – 0.8 0.18 lb 6
2018-07-30 Standard electrofishing 37.1 1.63 lb 28
2018-07-30 Standard gill nets 1.5 (above normal) 0.3 – 0.6 0.60 lb 18
2022-08-01 Standard electrofishing 68.0 1.40 lb 68
2022-08-01 Standard gill nets 3.9 (above normal) 0.3 – 0.6 0.75 lb 47
2022-08-01 Standard trap nets 0.1 (below normal) 0.2 – 0.8 1.88 lb 1
1983-07-18 Standard gill nets 0.1 (below normal) 0.3 – 0.6 0.30 lb 1
1983-07-18 Standard trap nets 0.1 (below normal) 0.2 – 0.8 0.20 lb 1

Iowa Darter

Date Gear CPUE Normal Range Total Catch
1994-08-01 Survey seining 0.4 2
2018-08-20 15-ft beach seine 0.5 1
2018-08-20 50-ft beach seine 1.8 14
2018-08-20 Backpack electrofishing 18.9 39

Bluegill

Date Gear CPUE Normal Range Avg Weight Total Catch
1994-08-01 Survey seining 14.2 71
1994-08-01 Standard trap nets 3.8 (normal) 3.5 – 57.1 0.29 lb 46
1998-07-27 Standard gill nets 0.3 0.21 lb 3
1998-07-27 Standard trap nets 5.8 (normal) 3.5 – 57.1 0.24 lb 69
2006-07-31 Standard gill nets 14.3 0.11 lb 171
2006-07-31 Standard trap nets 42.7 (normal) 3.5 – 57.1 0.09 lb 512
2014-07-28 Standard gill nets 35.5 0.19 lb 426
2014-07-28 Standard trap nets 34.6 (normal) 3.5 – 57.1 0.12 lb 415
2018-08-20 Backpack electrofishing 33.5 69
2018-08-20 15-ft beach seine 8.0 16
2018-08-20 50-ft beach seine 51.4 411
1987-08-03 Standard gill nets 11.0 0.24 lb 66
1987-08-03 Standard trap nets 9.3 (normal) 3.5 – 57.1 0.23 lb 102
2018-07-30 Standard gill nets 18.6 0.18 lb 223
2018-07-30 Standard trap nets 15.6 (normal) 3.5 – 57.1 0.20 lb 172
2022-08-01 Standard gill nets 31.5 0.23 lb 378
2022-08-01 Standard trap nets 20.3 (normal) 3.5 – 57.1 0.13 lb 244
1983-07-18 Standard gill nets 43.4 0.15 lb 347
1983-07-18 Standard trap nets 34.4 (normal) 3.5 – 57.1 0.15 lb 482

Walleye

Date Gear CPUE Normal Range Avg Weight Total Catch
1994-08-01 Standard gill nets 7.0 (above normal) 0.8 – 3.8 3.00 lb 84
1994-08-01 Standard trap nets 0.5 (normal) 0.3 – 0.8 1.21 lb 6
1998-07-27 Standard gill nets 6.3 (above normal) 0.8 – 3.8 2.30 lb 75
1998-07-27 Standard trap nets 0.4 (normal) 0.3 – 0.8 1.65 lb 5
2006-07-31 Standard gill nets 7.9 (above normal) 0.8 – 3.8 2.35 lb 95
2006-07-31 Standard trap nets 0.1 (below normal) 0.3 – 0.8 1.39 lb 1
2014-07-28 Standard gill nets 5.8 (above normal) 0.8 – 3.8 1.35 lb 70
2014-07-28 Standard trap nets 0.2 (below normal) 0.3 – 0.8 0.84 lb 2
1987-08-03 Standard gill nets 12.0 (above normal) 0.8 – 3.8 1.05 lb 72
1987-08-03 Standard trap nets 0.3 (below normal) 0.3 – 0.8 0.73 lb 3
2018-07-30 Standard gill nets 3.3 (normal) 0.8 – 3.8 1.92 lb 40
2022-08-01 Standard gill nets 3.8 (above normal) 0.8 – 3.8 2.07 lb 46
1983-07-18 Standard gill nets 3.9 (above normal) 0.8 – 3.8 1.47 lb 31
1983-07-18 Standard trap nets 0.1 (below normal) 0.3 – 0.8 0.15 lb 2

Black Crappie

Date Gear CPUE Normal Range Avg Weight Total Catch
1994-08-01 Survey seining 9.0 45
1994-08-01 Standard gill nets 0.7 (below normal) 1.7 – 17.5 0.30 lb 8
1994-08-01 Standard trap nets 1.7 (below normal) 2.1 – 24.1 0.53 lb 20
1998-07-27 Standard gill nets 13.3 (normal) 1.7 – 17.5 0.18 lb 159
1998-07-27 Standard trap nets 3.9 (normal) 2.1 – 24.1 0.36 lb 47
2006-07-31 Standard gill nets 5.4 (normal) 1.7 – 17.5 0.24 lb 65
2006-07-31 Standard trap nets 2.3 (normal) 2.1 – 24.1 0.44 lb 28
2014-07-28 Standard gill nets 5.2 (normal) 1.7 – 17.5 0.38 lb 62
2014-07-28 Standard trap nets 1.8 (below normal) 2.1 – 24.1 0.42 lb 22
2018-08-20 Backpack electrofishing 0.5 1
1987-08-03 Standard gill nets 3.5 (normal) 1.7 – 17.5 0.14 lb 21
1987-08-03 Standard trap nets 2.0 (below normal) 2.1 – 24.1 0.33 lb 22
2018-07-30 Standard gill nets 5.7 (normal) 1.7 – 17.5 0.44 lb 68
2018-07-30 Standard trap nets 2.5 (normal) 2.1 – 24.1 0.47 lb 28
2022-08-01 Standard gill nets 4.0 (normal) 1.7 – 17.5 0.37 lb 48
2022-08-01 Standard trap nets 0.8 (below normal) 2.1 – 24.1 0.31 lb 9
1983-07-18 Standard gill nets 11.0 (normal) 1.7 – 17.5 0.22 lb 88
1983-07-18 Standard trap nets 4.8 (normal) 2.1 – 24.1 0.22 lb 67

White Sucker

Date Gear CPUE Normal Range Avg Weight Total Catch
1994-08-01 Survey seining 0.4 2
1994-08-01 Standard gill nets 2.5 (above normal) 0.5 – 2.3 0.77 lb 30
1994-08-01 Standard trap nets 0.3 (normal) 0.2 – 1.2 2.79 lb 4
1998-07-27 Standard gill nets 0.8 (normal) 0.5 – 2.3 2.13 lb 10
1998-07-27 Standard trap nets 0.3 (normal) 0.2 – 1.2 2.54 lb 4
2006-07-31 Standard gill nets 0.5 (normal) 0.5 – 2.3 1.20 lb 6
2006-07-31 Standard trap nets 0.1 (below normal) 0.2 – 1.2 3.42 lb 1
2014-07-28 Standard gill nets 0.3 (below normal) 0.5 – 2.3 2.04 lb 3
1987-08-03 Standard gill nets 0.3 (below normal) 0.5 – 2.3 0.85 lb 2
1987-08-03 Standard trap nets 0.4 (normal) 0.2 – 1.2 2.65 lb 4
2022-08-01 Standard gill nets 0.1 (below normal) 0.5 – 2.3 2.70 lb 1
2022-08-01 Standard trap nets 0.1 (below normal) 0.2 – 1.2 3.74 lb 1
1983-07-18 Standard gill nets 0.3 (below normal) 0.5 – 2.3 1.65 lb 2
1983-07-18 Standard trap nets 0.4 (normal) 0.2 – 1.2 2.00 lb 5

Green Sunfish

Date Gear CPUE Normal Range Avg Weight Total Catch
1994-08-01 Survey seining 0.4 2
2006-07-31 Standard trap nets 0.1 (below normal) 0.3 – 2.8 0.16 lb 1
2018-08-20 Backpack electrofishing 18.9 39
2018-08-20 50-ft beach seine 0.1 1
2022-08-01 Standard trap nets 0.1 (below normal) 0.3 – 2.8 0.09 lb 1
2022-08-01 Standard gill nets 0.3 (below normal) 0.5 – 1.5 0.06 lb 4

Mimic Shiner

Date Gear CPUE Normal Range Total Catch
1994-08-01 Survey seining 42.6 213

Muskellunge

Date Gear CPUE Normal Range Avg Weight Total Catch
1994-08-01 Standard gill nets 0.1 10.91 lb 1
2006-07-31 Standard gill nets 0.3 10.49 lb 4
2014-07-28 Standard trap nets 0.1 1
2014-07-28 Standard gill nets 0.1 9.09 lb 1
1987-08-03 Standard trap nets 0.1 1.10 lb 1
2024-03-12 Special electrofishing 1.5 18.97 lb 44

Pumpkinseed

Date Gear CPUE Normal Range Avg Weight Total Catch
1994-08-01 Standard trap nets 0.3 (below normal) 0.7 – 6.5 0.31 lb 4
1998-07-27 Standard gill nets 0.1 0.38 lb 1
1998-07-27 Standard trap nets 0.8 (normal) 0.7 – 6.5 0.36 lb 9
2006-07-31 Standard gill nets 0.4 0.12 lb 5
2006-07-31 Standard trap nets 1.8 (normal) 0.7 – 6.5 0.14 lb 22
2014-07-28 Standard gill nets 2.8 0.18 lb 33
2014-07-28 Standard trap nets 4.9 (normal) 0.7 – 6.5 0.12 lb 59
2018-08-20 Backpack electrofishing 0.5 1
2018-08-20 15-ft beach seine 1.5 3
2018-08-20 50-ft beach seine 1.8 14
1987-08-03 Standard gill nets 2.7 0.18 lb 16
1987-08-03 Standard trap nets 4.5 (normal) 0.7 – 6.5 0.14 lb 50
2018-07-30 Standard gill nets 1.6 0.17 lb 19
2018-07-30 Standard trap nets 0.9 (normal) 0.7 – 6.5 0.10 lb 10
2022-08-01 Standard gill nets 3.8 0.20 lb 45
2022-08-01 Standard trap nets 1.8 (normal) 0.7 – 6.5 0.12 lb 21
1983-07-18 Standard gill nets 4.4 0.11 lb 35
1983-07-18 Standard trap nets 1.3 (normal) 0.7 – 6.5 0.07 lb 18

Brown Bullhead

Date Gear CPUE Normal Range Avg Weight Total Catch
1998-07-27 Standard trap nets 0.7 (normal) 0.4 – 5.1 0.71 lb 8
1998-07-27 Standard gill nets 0.6 (below normal) 0.8 – 7.0 0.55 lb 7
2006-07-31 Standard trap nets 4.4 (normal) 0.4 – 5.1 0.65 lb 53
2014-07-28 Standard trap nets 0.7 (normal) 0.4 – 5.1 0.80 lb 8
2014-07-28 Standard gill nets 0.1 (below normal) 0.8 – 7.0 0.80 lb 1
1987-08-03 Standard trap nets 0.1 (below normal) 0.4 – 5.1 0.70 lb 1
2022-08-01 Standard gill nets 0.1 (below normal) 0.8 – 7.0 0.71 lb 1
1983-07-18 Standard trap nets 0.2 (below normal) 0.4 – 5.1 0.80 lb 3

Hybrid Sunfish

Date Gear CPUE Normal Range Avg Weight Total Catch
1998-07-27 Standard trap nets 0.5 0.54 lb 6
2006-07-31 Standard trap nets 1.8 0.22 lb 21
2014-07-28 Standard gill nets 0.2 0.22 lb 2
2014-07-28 Standard trap nets 3.5 0.23 lb 42
2018-08-20 50-ft beach seine 1.0 8
2018-08-20 Backpack electrofishing 7.3 15
1987-08-03 Standard gill nets 0.2 0.10 lb 1
1987-08-03 Standard trap nets 1.4 0.17 lb 15
2018-07-30 Standard gill nets 0.8 0.33 lb 9
2018-07-30 Standard trap nets 2.4 0.30 lb 26
2022-08-01 Standard gill nets 2.7 0.26 lb 32
2022-08-01 Standard trap nets 2.7 0.37 lb 32
1983-07-18 Standard trap nets 0.8 0.25 lb 11

CNM

Date Gear CPUE Normal Range Total Catch
2018-08-20 Backpack electrofishing 3.9 8

Tadpole Madtom

Date Gear CPUE Normal Range Total Catch
2018-08-20 Backpack electrofishing 1.4 3

Golden Shiner

Date Gear CPUE Normal Range Avg Weight Total Catch
2018-08-20 Backpack electrofishing 5.8 12
2018-07-30 Standard trap nets 0.1 (below normal) 0.3 – 1.6 0.07 lb 1

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Fish Species

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

Black CrappieBluegillBrown BullheadGreen SunfishHybrid SunfishLargemouth BassMuskellungeNorthern 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.