South Twin

Itasca County, Minnesota — DOW #31019100

109 Surveys

Invasive Species Alert

South Twin has confirmed populations of:

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140.78
Acres
40 ft
Max Depth
0
13
Fish Species
9
Local Guides

DNR Fish Surveys

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

Yellow Perch

Date Gear CPUE Normal Range Avg Weight Total Catch
1999-08-09 Standard trap nets 1.3 (normal) 0.5 – 3.3 0.13 lb 12
1999-08-09 Standard gill nets 1.0 (below normal) 3.4 – 43.6 0.20 lb 6
1958-08-07 Standard gill nets 2.0 (below normal) 3.4 – 43.6 0.08 lb 12
1977-08-15 Standard trap nets 0.8 (normal) 0.5 – 3.3 0.27 lb 3
2008-08-04 Standard trap nets 0.3 (below normal) 0.5 – 3.3 0.17 lb 3

SLR

Date Gear CPUE Normal Range Avg Weight Total Catch
1999-08-09 Standard trap nets 0.1 5.95 lb 1

Yellow Bullhead

Date Gear CPUE Normal Range Avg Weight Total Catch
1999-08-09 Standard gill nets 1.5 (normal) 1.0 – 10.5 0.65 lb 9
1999-08-09 Standard trap nets 0.7 (below normal) 1.3 – 9.8 1.22 lb 6
1958-08-07 Standard gill nets 0.3 (below normal) 1.0 – 10.5 1.20 lb 2
1958-08-07 Standard trap nets 1.0 (below normal) 1.3 – 9.8 0.83 lb 10
1977-08-15 Standard gill nets 3.0 (normal) 1.0 – 10.5 0.77 lb 9
1977-08-15 Standard trap nets 0.8 (below normal) 1.3 – 9.8 0.97 lb 3
2008-08-04 Standard gill nets 2.2 (normal) 1.0 – 10.5 0.85 lb 13
2008-08-04 Standard trap nets 0.1 (below normal) 1.3 – 9.8 0.84 lb 1
1986-08-14 Standard gill nets 2.8 (normal) 1.0 – 10.5 0.76 lb 11
1986-08-14 Standard trap nets 0.5 (below normal) 1.3 – 9.8 1.00 lb 2

Northern Pike

Date Gear CPUE Normal Range Avg Weight Total Catch
1999-08-09 Standard gill nets 11.2 (above normal) 3.5 – 10.5 1.59 lb 67
1999-08-09 Standard trap nets 0.4 3.73 lb 4
1958-08-07 Standard gill nets 4.0 (normal) 3.5 – 10.5 2.73 lb 24
1958-08-07 Standard trap nets 0.2 2.20 lb 2
1977-08-15 Standard gill nets 7.7 (normal) 3.5 – 10.5 2.46 lb 23
1977-08-15 Standard trap nets 1.0 1.30 lb 4
2008-08-04 Standard gill nets 15.7 (above normal) 3.5 – 10.5 1.18 lb 94
2008-08-04 Standard trap nets 0.2 1.45 lb 2
1986-08-14 Standard gill nets 10.0 (normal) 3.5 – 10.5 1.80 lb 40
1986-08-14 Standard trap nets 1.0 3.45 lb 4

Largemouth Bass

Date Gear CPUE Normal Range Avg Weight Total Catch
1999-08-09 Standard electrofishing 9.0 1.43 lb 9
1999-08-09 Standard gill nets 0.3 (normal) 0.3 – 1.7 0.55 lb 2
1999-08-09 Standard trap nets 0.1 (below normal) 0.3 – 1.3 0.17 lb 1
1958-08-07 Standard gill nets 0.5 (normal) 0.3 – 1.7 1.63 lb 3
1958-08-07 Standard trap nets 0.5 (normal) 0.3 – 1.3 0.40 lb 5
1977-08-15 Standard gill nets 1.3 (normal) 0.3 – 1.7 1.05 lb 4
2008-08-04 Standard electrofishing 99.0 0.60 lb 99
2008-08-04 Standard gill nets 1.2 (normal) 0.3 – 1.7 1.14 lb 7
2008-08-04 Standard trap nets 0.6 (normal) 0.3 – 1.3 0.98 lb 5
1986-08-14 Standard gill nets 3.0 (above normal) 0.3 – 1.7 0.99 lb 12
1986-08-14 Standard trap nets 0.3 (below normal) 0.3 – 1.3 0.40 lb 1

Shorthead Redhorse

Date Gear CPUE Normal Range Avg Weight Total Catch
1999-08-09 Standard gill nets 0.5 (normal) 0.2 – 0.8 1.96 lb 3
1999-08-09 Standard trap nets 0.2 (normal) 0.2 – 1.8 1.83 lb 2
1958-08-07 Standard gill nets 0.3 (normal) 0.2 – 0.8 2.05 lb 2
1958-08-07 Standard trap nets 0.2 (normal) 0.2 – 1.8 1.40 lb 2
1977-08-15 Standard gill nets 0.3 (normal) 0.2 – 0.8 2.50 lb 1
2008-08-04 Standard gill nets 0.8 (above normal) 0.2 – 0.8 1.52 lb 5
1986-08-14 Standard gill nets 0.3 (normal) 0.2 – 0.8 1.70 lb 1

Rock Bass

Date Gear CPUE Normal Range Avg Weight Total Catch
1999-08-09 Standard trap nets 0.7 (normal) 0.5 – 1.8 0.20 lb 6
1958-08-07 Standard trap nets 1.1 (normal) 0.5 – 1.8 0.32 lb 11
1977-08-15 Standard gill nets 1.0 (normal) 0.3 – 1.9 0.47 lb 3
1977-08-15 Standard trap nets 0.3 (below normal) 0.5 – 1.8 0.40 lb 1
2008-08-04 Standard gill nets 1.5 (normal) 0.3 – 1.9 0.35 lb 9
2008-08-04 Standard trap nets 0.2 (below normal) 0.5 – 1.8 0.25 lb 2
1986-08-14 Standard gill nets 0.3 (below normal) 0.3 – 1.9 0.60 lb 1
1986-08-14 Standard trap nets 0.8 (normal) 0.5 – 1.8 0.23 lb 3

Walleye

Date Gear CPUE Normal Range Avg Weight Total Catch
1999-08-09 Standard gill nets 0.2 (below normal) 1.3 – 5.0 3.20 lb 1
1958-08-07 Standard trap nets 0.1 (below normal) 0.3 – 0.7 2.40 lb 1
2008-08-04 Standard gill nets 0.3 (below normal) 1.3 – 5.0 2.07 lb 2
1986-08-14 Standard gill nets 0.5 (below normal) 1.3 – 5.0 1.20 lb 2

Bluegill

Date Gear CPUE Normal Range Avg Weight Total Catch
1999-08-09 Standard gill nets 4.7 0.09 lb 28
1999-08-09 Standard trap nets 10.6 (normal) 6.1 – 46.6 0.09 lb 95
1958-08-07 Standard trap nets 17.1 (normal) 6.1 – 46.6 0.14 lb 171
1977-08-15 Standard gill nets 5.7 0.16 lb 17
1977-08-15 Standard trap nets 8.0 (normal) 6.1 – 46.6 0.28 lb 32
2008-08-04 Standard gill nets 6.8 0.10 lb 41
2008-08-04 Standard trap nets 5.1 (below normal) 6.1 – 46.6 0.11 lb 46
1986-08-14 Standard gill nets 4.5 0.17 lb 18
1986-08-14 Standard trap nets 5.0 (below normal) 6.1 – 46.6 0.14 lb 20

Pumpkinseed

Date Gear CPUE Normal Range Avg Weight Total Catch
1999-08-09 Standard gill nets 0.3 0.17 lb 2
1999-08-09 Standard trap nets 1.0 (below normal) 2.0 – 8.5 0.10 lb 9
1958-08-07 Standard gill nets 0.2 0.30 lb 1
1958-08-07 Standard trap nets 3.8 (normal) 2.0 – 8.5 0.17 lb 38
1977-08-15 Standard gill nets 0.7 0.05 lb 2
1977-08-15 Standard trap nets 1.0 (below normal) 2.0 – 8.5 0.35 lb 4
2008-08-04 Standard gill nets 2.0 0.28 lb 12
2008-08-04 Standard trap nets 0.2 (below normal) 2.0 – 8.5 0.15 lb 2
1986-08-14 Standard gill nets 3.3 0.25 lb 13
1986-08-14 Standard trap nets 0.3 (below normal) 2.0 – 8.5 0.20 lb 1

Tullibee (Cisco)

Date Gear CPUE Normal Range Avg Weight Total Catch
1999-08-09 Standard gill nets 0.5 (normal) 0.5 – 4.8 1.24 lb 3
1958-08-07 Standard gill nets 7.8 (above normal) 0.5 – 4.8 0.88 lb 47
1977-08-15 Standard gill nets 4.0 (normal) 0.5 – 4.8 0.69 lb 12
2008-08-04 Standard gill nets 2.0 (normal) 0.5 – 4.8 1.14 lb 12
1986-08-14 Standard gill nets 2.0 (normal) 0.5 – 4.8 0.90 lb 8

White Sucker

Date Gear CPUE Normal Range Avg Weight Total Catch
1999-08-09 Standard gill nets 0.3 (below normal) 0.5 – 2.7 2.97 lb 2
1958-08-07 Standard gill nets 0.8 (normal) 0.5 – 2.7 1.20 lb 5
1977-08-15 Standard gill nets 0.3 (below normal) 0.5 – 2.7 2.80 lb 1
2008-08-04 Standard gill nets 1.3 (normal) 0.5 – 2.7 1.39 lb 8
1986-08-14 Standard gill nets 0.8 (normal) 0.5 – 2.7 1.97 lb 3

Black Crappie

Date Gear CPUE Normal Range Avg Weight Total Catch
1999-08-09 Standard gill nets 4.3 (above normal) 0.6 – 3.5 0.20 lb 26
1999-08-09 Standard trap nets 1.3 (normal) 0.7 – 3.4 0.26 lb 12
1958-08-07 Standard gill nets 7.5 (above normal) 0.6 – 3.5 0.19 lb 45
1958-08-07 Standard trap nets 3.3 (normal) 0.7 – 3.4 0.21 lb 33
1977-08-15 Standard gill nets 40.0 (above normal) 0.6 – 3.5 0.27 lb 120
1977-08-15 Standard trap nets 2.0 (normal) 0.7 – 3.4 0.62 lb 8
2008-08-04 Standard gill nets 2.8 (normal) 0.6 – 3.5 0.19 lb 17
2008-08-04 Standard trap nets 0.3 (below normal) 0.7 – 3.4 0.43 lb 3
1986-08-14 Standard gill nets 3.3 (normal) 0.6 – 3.5 0.35 lb 13
1986-08-14 Standard trap nets 1.0 (normal) 0.7 – 3.4 0.23 lb 4

Black Bullhead

Date Gear CPUE Normal Range Avg Weight Total Catch
1999-08-09 Standard gill nets 0.2 (below normal) 0.8 – 7.7 0.33 lb 1
1977-08-15 Standard gill nets 2.7 (normal) 0.8 – 7.7 0.69 lb 8
1986-08-14 Standard gill nets 0.3 (below normal) 0.8 – 7.7 0.40 lb 1

Bowfin

Date Gear CPUE Normal Range Avg Weight Total Catch
1999-08-09 Standard trap nets 0.4 (normal) 0.4 – 1.3 5.60 lb 4
1958-08-07 Standard gill nets 0.3 (normal) 0.3 – 0.6 5.45 lb 2
1958-08-07 Standard trap nets 1.6 (above normal) 0.4 – 1.3 4.71 lb 16
1977-08-15 Standard trap nets 1.3 (normal) 0.4 – 1.3 5.04 lb 5
2008-08-04 Standard trap nets 0.8 (normal) 0.4 – 1.3 5.98 lb 7
1986-08-14 Standard gill nets 0.3 (below normal) 0.3 – 0.6 5.80 lb 1
1986-08-14 Standard trap nets 0.3 (below normal) 0.4 – 1.3 5.60 lb 1

BIB

Date Gear CPUE Normal Range Avg Weight Total Catch
1999-08-09 Standard trap nets 0.1 (below normal) 0.2 – 5.3 9.26 lb 1
1958-08-07 Standard trap nets 0.1 (below normal) 0.2 – 5.3 5.00 lb 1

Brown Bullhead

Date Gear CPUE Normal Range Avg Weight Total Catch
1958-08-07 Standard trap nets 0.5 (normal) 0.4 – 2.1 1.04 lb 5
1986-08-14 Standard trap nets 0.3 (below normal) 0.4 – 2.1 1.20 lb 1

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Fish Species

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

Black CrappieBluegillBowfin (Dogfish)Largemouth BassNorthern PikePumpkinseedRock BassShorthead RedhorseTullibee (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.