Fisheries Lake Survey

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Name: Byllesby

Nearest Town: Cannon Falls
Primary County: Dakota
Survey Date: 06/09/2014
Inventory Number: 19000600
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Public Access Information

Ownership Type Description
County Concrete
County Concrete
County Concrete


Lake Characteristics

Lake Area (acres): 1368.47
Littoral Area (acres): 976
Maximum Depth (ft): 50
Water Clarity (ft): N/A

Dominant Bottom Substrate: N/A
Abundance of Aquatic Plants: N/A
Maximum Depth of Plant Growth (ft): N/A


Did you know? Habitat acquisition of lands next to lakes and streams protects spawning areas and shoreline vegetation, and it increases access to fishing waters.

Fish Sampled for the 2014 Survey Year

Species

Gear Used

Number of fish per net

Average Fish Weight (lbs)

Normal Range (lbs)

Caught

Normal Range

Black Crappie Trap net 6.22 0.7 - 3.2 0.47 0.2 - 0.5
Bluegill Trap net 1.44 5.6 - 42.3 0.40 0.1 - 0.3
Bowfin (dogfish) Trap net 0.11 0.4 - 1.0 6.48 3.1 - 4.8
Channel Catfish Trap net 0.44 N/A 2.70 N/A
Gill net 0.67 N/A 1.85 N/A
Common Carp Trap net 3.78 0.2 - 1.1 2.83 3.0 - 7.8
Gill net 3.22 0.2 - 1.7 3.22 2.1 - 9.8
Freshwater Drum Trap net 0.56 0.5 - 2.4 0.64 0.4 - 1.1
Gill net 8.89 0.8 - 10.5 0.26 0.2 - 0.7
Golden Redhorse Trap net 0.67 N/A 2.58 N/A
Gill net 0.11 N/A 1.76 N/A
Northern Pike Gill net 0.33 3.1 - 8.5 2.16 1.5 - 2.7
Shorthead Redhorse Trap net 1.11 0.3 - 3.9 1.68 1.2 - 2.9
Gill net 0.22 0.2 - 1.2 1.10 1.1 - 2.5
Walleye Trap net 0.22 0.2 - 0.7 2.26 0.9 - 2.9
Gill net 0.44 1.3 - 5.5 2.85 1.2 - 2.4
White Crappie Trap net 0.67 0.6 - 1.9 0.41 0.2 - 0.4
Gill net 0.11 0.6 - 6.6 0.04 0.2 - 0.3
White Sucker Trap net 0.22 0.2 - 1.0 2.32 1.7 - 2.9
Gill net 1.22 0.5 - 3.5 1.81 1.6 - 2.4
Yellow Perch Gill net 0.22 2.5 - 24.2 0.18 0.1 - 0.2
Normal Ranges represent typical catches for lakes with similar physical and chemical characteristics.


Length of Selected Species (Trapnet, Gillnet) Sampled for the 2014 Survey Year

Species Number of fish caught in each category (inches)
0-5 6-8 9-11 12-14 15-19 20-24 25-29 30+ Total
black crappie 1 21 34 0 0 0 0 0 56
bluegill 1 12 0 0 0 0 0 0 13
bowfin (dogfish) 0 0 0 0 0 0 1 0 1
channel catfish 0 2 1 1 3 2 1 0 10
common carp 0 0 0 6 37 18 2 0 63
freshwater drum 20 17 46 0 2 0 0 0 85
golden redhorse 0 0 0 0 7 0 0 0 7
northern pike 0 0 0 2 0 0 1 0 3
shorthead redhorse 0 0 1 1 10 0 0 0 12
walleye 0 1 0 0 4 0 1 0 6
white crappie 1 3 3 0 0 0 0 0 7
white sucker 0 0 0 2 11 0 0 0 13
yellow perch 0 2 0 0 0 0 0 0 2


For the record, the largest Goldeye taken in Minnesota weighed 2 lbs., 13.1 oz. and was caught:

    Where: Root River near Hokah
    When: 6/10/01
    Statistics: 20.1" length, 11.5" girth

Fish Stocking Activity

Fish Stocked by Species for the Last Ten Years

Year Species Size Number Pounds
2014 walleye2 fingerlings 21,712 865.0
  walleye2 fingerlings 2,160 135.0
2013 Walleye2 fingerlings 30,000 1,000.0
2010 Walleye fingerlings 16,040 1,000.0
2008 Walleye1 fingerlings 28,269 1,000.0
2006 Walleye1 fingerlings 4,446 346.0
  Walleye fingerlings 2,418 276.0

Stocking Notes
1 - indicates fish purchased and stocked by private citizens and sporting groups.
2 - indicates fish purchased by the DNR for stocking.

Stocking Fish Sizes
Fry - Newly hatched fish that are ready to be stocked usually called "swim-ups". Walleye fry are 1/3 of an inch or around 8 mm.
Fingerling - Fingerlings are one to six months old and can range from a size of one to twelve inches depending on the species. Walleye fingerlings range from three to eight inches each fall.
Yearling - Yearling fish are at least one year old. A one-year-old fish can range from three to twenty inches depending on the species. Walleye yearlings average from six to twelve inches.
Adult - Adult fish are fish that have reached maturity. Depending on the species, maturity can be reached at two years of age. Walleye reach maturity between the ages of four and six years.

Fish Consumption Guidelines

These fish consumption guidelines help people make choices about which fish to eat and how often. Following the guidelin es enables people to reduce their exposure to contaminants while still enjoying the many benefits from fish.

Pregnant Women, Women who may become pregnant and Children under age 15

LAKE NAME
County, DOWID
Species Meal Advice Contaminants
Unrestricted 1 meal/week 1 meal/month Do not eat
BYLLESBY
Dakota Co., 19000600
Bluegill Sunfish All sizes        
Carp   All sizes     Mercury
Channel Catfish   All sizes     Mercury
Crappie   All sizes     Mercury
Northern Pike   All sizes     Mercury
River Carpsucker   All sizes     Mercury
Smallmouth Bass All sizes        
Walleye   All sizes     Mercury
White Bass   All sizes     Mercury

General Population

LAKE NAME
County, DOWID
Species Meal Advice Contaminants
Unrestricted 1 meal/week 1 meal/month Do not eat
BYLLESBY
Dakota Co., 19000600
Bluegill Sunfish All sizes        
Carp All sizes        
Channel Catfish   All sizes     Mercury
Crappie All sizes        
River Carpsucker All sizes        
Smallmouth Bass All sizes        
Walleye   All sizes     Mercury
White Bass   All sizes     Mercury

DOWID - MN DNR, Division of Waters' lake ID number.

Contaminants listed were measured at levels that trigger advice to limit consumption.

Listing of consumption guidelines do not imply the fish are legal to keep, MN DNR fishing regulations should be consulted.

Dioxin
Mercury
PCBS - Polychlorinated biphenyls
PFOS - Perfluorooctane sulfanate


Status of the Fishery (as of 06/09/2014)

Lake Byllesby is a 1,435 acre impoundment on the Cannon River created by a hydroelectric dam. A fisheries population assessment was conducted on Lake Byllesby in June, 2014. Assessment work consisted of standard lake survey netting using gill nets and trap nets. The last assessment netting on Lake Byllesby was completed in 2008. Previous years assessments were usually completed in mid-July. The assessment was moved to early June in 2014 to try to determine if fish numbers and catch rates were affected by seasonal migrations out of the reservoir and back into the Cannon River. Catch rates of most gamefish species were similar to past surveys.

High turbidity levels from runoff and excessive algal blooms limit submersed vegetation and likely impact the fishery. The reservoir is affected by excessive sediment loading in the upper reaches and much of the upper lake consists of shallow sand and mud flats at normal flow and lake levels. The fish community is similar to many reservoirs with a diverse fish population that includes many riverine species. Lake Byllesby can provide a fair fishery, especially in winter when many fish houses are present. Anglers typically target Black Crappie and Walleye. The reservoir may provide over-winter habitat for walleye and other species that move downstream from the Cannon River.


For more information on this lake, contact:

Area Fisheries Supervisor
1801 South Oak St
Lake City, MN 55041
Phone: (651) 345-3365
Internet: Lake City Fisheries
E-Mail: LakeCity.Fisheries@state.mn.us

Lake maps can be obtained from:

Minnesota Bookstore
660 Olive Street
St. Paul, MN 55155
(651) 297-3000 or (800) 657-3757
To order, use B0116 for the map-id.


For general DNR Information, contact:

DNR Information Center
500 Lafayette Road
St. Paul, MN 55155-4040
TDD: (651) 296-6157 or (888) MINNDNR
Internet: www.dnr.state.mn.us
E-Mail: info.dnr@state.mn.us

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