Cobblestone

Dakota County, Minnesota — DOW #19045600

50 Surveys

Invasive Species Alert

Cobblestone has confirmed populations of:

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34.73
Acres
18 ft
Max Depth
0
10
Fish Species
1
Local Guides

DNR Fish Surveys

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

Green Sunfish

Date Gear CPUE Normal Range Avg Weight Total Catch
2020-06-29 Standard trap nets 0.4 (normal) 0.2 – 2.1 0.22 lb 2
2010-06-23 Standard gill nets 1.0 (normal) 0.9 – 5.3 0.05 lb 2
2015-06-22 Standard trap nets 0.2 (normal) 0.2 – 2.1 0.17 lb 1
2005-06-13 Standard trap nets 1.8 (normal) 0.2 – 2.1 0.21 lb 9
2005-06-13 Standard gill nets 1.0 (normal) 0.9 – 5.3 0.07 lb 1

Black Crappie

Date Gear CPUE Normal Range Avg Weight Total Catch
2020-06-29 Standard gill nets 9.0 (normal) 1.0 – 11.8 0.35 lb 9
2020-06-29 Standard trap nets 1.6 (normal) 1.2 – 4.8 0.19 lb 8
2010-06-23 Standard gill nets 13.0 (above normal) 1.0 – 11.8 0.10 lb 26
2010-06-23 Standard trap nets 20.2 (above normal) 1.2 – 4.8 0.11 lb 101
2015-06-22 Standard gill nets 79.0 (above normal) 1.0 – 11.8 0.17 lb 79
2015-06-22 Standard trap nets 16.0 (above normal) 1.2 – 4.8 0.19 lb 80

Black Bullhead

Date Gear CPUE Normal Range Avg Weight Total Catch
2020-06-29 Standard gill nets 5.0 (below normal) 11.5 – 57.8 0.33 lb 5
2020-06-29 Standard trap nets 0.2 (below normal) 1.1 – 25.2 0.25 lb 1
2010-06-23 Standard gill nets 7.5 (below normal) 11.5 – 57.8 0.26 lb 15
2010-06-23 Standard trap nets 19.6 (normal) 1.1 – 25.2 0.27 lb 98
2015-06-22 Standard gill nets 6.0 (below normal) 11.5 – 57.8 0.45 lb 6
2015-06-22 Standard trap nets 5.6 (normal) 1.1 – 25.2 0.48 lb 28
2005-06-13 Standard gill nets 60.0 (above normal) 11.5 – 57.8 0.12 lb 60
2005-06-13 Standard trap nets 147.4 (above normal) 1.1 – 25.2 0.11 lb 737

White Sucker

Date Gear CPUE Normal Range Avg Weight Total Catch
2020-06-29 Standard gill nets 2.0 (normal) 1.0 – 3.4 2.07 lb 2

Hybrid Sunfish

Date Gear CPUE Normal Range Avg Weight Total Catch
2020-06-29 Standard trap nets 1.8 0.44 lb 9
2020-06-29 Standard gill nets 4.0 0.28 lb 4
2010-06-23 Standard trap nets 5.8 0.15 lb 29
2010-06-23 Standard gill nets 0.5 0.08 lb 1
2015-06-22 Standard trap nets 4.4 0.25 lb 22
2005-06-13 Standard gill nets 208.0 0.20 lb 208
2005-06-13 Standard trap nets 51.2 0.10 lb 256

Bluegill

Date Gear CPUE Normal Range Avg Weight Total Catch
2020-06-29 Standard trap nets 6.0 (normal) 4.9 – 49.8 0.19 lb 30
2020-06-29 Standard gill nets 34.0 0.20 lb 34
2010-06-23 Standard trap nets 16.8 (normal) 4.9 – 49.8 0.12 lb 84
2010-06-23 Standard gill nets 1.5 0.08 lb 3
2015-06-22 Standard trap nets 30.6 (normal) 4.9 – 49.8 0.11 lb 153
2015-06-22 Standard gill nets 15.0 0.19 lb 15
2005-06-13 Standard trap nets 9.2 (normal) 4.9 – 49.8 0.04 lb 46

Yellow Perch

Date Gear CPUE Normal Range Avg Weight Total Catch
2020-06-29 Standard trap nets 1.0 (normal) 0.5 – 5.3 0.32 lb 5
2020-06-29 Standard gill nets 28.0 (above normal) 2.5 – 24.8 0.25 lb 28

Walleye

Date Gear CPUE Normal Range Avg Weight Total Catch
2020-06-29 Standard gill nets 11.0 (above normal) 0.5 – 3.8 1.53 lb 11
2010-06-23 Standard gill nets 7.0 (above normal) 0.5 – 3.8 2.09 lb 14
2010-06-23 Standard trap nets 0.8 (normal) 0.3 – 1.0 2.33 lb 4
2015-06-22 Standard gill nets 2.0 (normal) 0.5 – 3.8 0.66 lb 2
2015-06-22 Standard trap nets 0.2 (below normal) 0.3 – 1.0 5.52 lb 1

Pumpkinseed

Date Gear CPUE Normal Range Avg Weight Total Catch
2020-06-29 Standard gill nets 4.0 0.20 lb 4
2020-06-29 Standard trap nets 0.2 (below normal) 1.7 – 10.3 0.05 lb 1
2010-06-23 Standard trap nets 0.2 (below normal) 1.7 – 10.3 0.11 lb 1
2015-06-22 Standard trap nets 3.2 (normal) 1.7 – 10.3 0.19 lb 16

Largemouth Bass

Date Gear CPUE Normal Range Avg Weight Total Catch
2020-06-29 Standard gill nets 2.0 (above normal) 0.5 – 1.5 0.87 lb 2
2010-06-23 Standard trap nets 0.2 (below normal) 0.3 – 1.3 2.43 lb 1
2015-06-22 Standard trap nets 0.6 (normal) 0.3 – 1.3 1.04 lb 3
2015-06-22 Standard gill nets 3.0 (above normal) 0.5 – 1.5 1.45 lb 3

GOF

Date Gear CPUE Normal Range Avg Weight Total Catch
2015-06-22 Standard trap nets 0.2 0.79 lb 1

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Fish Species

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

Black BullheadBlack CrappieBluegillGreen SunfishHybrid SunfishLargemouth BassPumpkinseedWalleyeWhite SuckerYellow 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.