Fisheries Lake Survey

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Name: Double

Nearest Town: Storden
Primary County: Cottonwood
Survey Date: 06/20/2011
Inventory Number: 17005600
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Public Access Information

Ownership Type Description
County Gravel COUNTY OWNED ACCESS ON SOUTH END OF NORTH LAKE
DNR Concrete STATE-OWNED ACCESS ON NORTH END OF NORTH LAKE


Lake Characteristics

Lake Area (acres): 236.1
Littoral Area (acres): 236.1
Maximum Depth (ft): 9
Water Clarity (ft): 2.0 (1.3-2.7)

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


Did you know? Fisheries personnel monitor and regulate aquaculture, fishing tournaments, commercial fishing operations, aquatic plant management, and aeration.

Fish Sampled for the 2011 Survey Year

Species

Gear Used

Number of fish per net

Average Fish Weight (lbs)

Normal Range (lbs)

Caught

Normal Range

Bigmouth Buffalo Trap net 0.50 0.2 - 1.0 4.61 2.6 - 5.8
Gill net 15.50 0.8 - 7.0 1.43 N/A
Black Bullhead Trap net 4.25 11.5 - 132.6 0.75 0.2 - 0.4
Gill net 2.50 30.3 - 150.6 0.42 0.2 - 0.4
Black Crappie Trap net 3.00 1.2 - 20.5 0.33 0.2 - 0.5
Gill net 0.50 1.4 - 13.8 1.01 0.2 - 0.4
Bluegill Trap net 0.75 1.2 - 20.0 0.28 0.1 - 0.4
Channel Catfish Gill net 0.50 N/A 3.09 N/A
Common Carp Trap net 2.75 1.0 - 5.5 2.08 1.4 - 4.6
Gill net 2.50 1.0 - 13.8 0.93 0.8 - 3.7
Freshwater Drum Trap net 0.25 0.2 - 3.3 0.71 0.3 - 1.0
Gill net 4.50 0.5 - 8.3 0.95 0.4 - 1.7
Green Sunfish Trap net 0.25 0.2 - 1.9 0.18 0.1 - 0.2
Orangespotted Sunfish Trap net 0.25 N/A 0.10 N/A
Shorthead Redhorse Gill net 0.50 0.3 - 11.3 0.93 0.8 - 1.7
Stonecat Gill net 0.50 N/A 0.18 N/A
Walleye Trap net 1.25 0.5 - 3.0 0.24 0.8 - 2.3
Gill net 3.00 2.3 - 18.1 1.44 1.0 - 2.3
White Crappie Trap net 0.50 0.3 - 6.0 0.51 0.3 - 0.6
White Sucker Trap net 2.00 0.3 - 2.6 1.38 1.0 - 2.0
Gill net 24.50 0.8 - 6.5 1.46 0.9 - 2.0
Yellow Bullhead Trap net 0.75 0.5 - 2.5 0.75 0.3 - 0.7
Yellow Perch Trap net 1.25 0.3 - 3.8 0.28 0.1 - 0.3
Gill net 14.50 2.7 - 25.0 0.21 0.1 - 0.3
Normal Ranges represent typical catches for lakes with similar physical and chemical characteristics.


Length of Selected Species (Trapnet, Gillnet) Sampled for the 2011 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
bigmouth buffalo 0 25 1 0 2 3 1 0 33
black bullhead 1 4 12 5 0 0 0 0 22
black crappie 3 5 4 1 0 0 0 0 13
bluegill 1 2 0 0 0 0 0 0 3
channel catfish 0 0 0 0 0 1 0 0 1
common carp 0 2 8 1 2 3 0 0 16
freshwater drum 0 1 4 3 2 0 0 0 10
green sunfish 1 0 0 0 0 0 0 0 1
orangespotted sunfish 1 0 0 0 0 0 0 0 1
shorthead redhorse 0 0 0 1 0 0 0 0 1
stonecat 0 1 0 0 0 0 0 0 1
walleye 0 5 1 1 4 0 0 0 11
white crappie 0 0 2 0 0 0 0 0 2
white sucker 0 1 9 27 20 0 0 0 57
yellow bullhead 0 0 2 1 0 0 0 0 3
yellow perch 11 17 4 0 0 0 0 0 34


For the record, the largest Walleye taken in Minnesota weighed 17 lbs., 8 oz. and was caught:

    Where: Seagull River at Saganaga Lake, Cook County
    When: 5/13/79
    Statistics: 35.8" length, 21.3" girth

Fish Stocking Activity

Fish Stocked by Species for the Last Ten Years

Year Species Size Number Pounds
2013 Walleye fry 245,664 2.0
2012 Northern Pike* adults 50 25.0
2011 Walleye yearlings 1,333 43.0
  Walleye fingerlings 5,273 216.0
2010 Walleye yearlings 600 100.0
  Walleye fingerlings 3,180 170.0
2008 Walleye fingerlings 6,642 246.0
2007 Walleye* fingerlings 1,260 126.0
  Walleye fingerlings 1,305 145.0
2006 Northern Pike fingerlings 2,265 16.0
2005 Northern Pike* fingerlings 1,000 10.0
  Walleye* fingerlings 3,695 285.0
2004 Walleye* fingerlings 7,189 227.0

Privately Stocked Fish
* indicates privately stocked fish. Private stocking includes fish purchased by the DNR for stocking and fish purchased and stocked by private citizens and sporting groups.

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

No fish consumption guidelines are available for this lake. For more information, see the "Fish Consumption Advice" pages at the Minnesota Department of Health.


Status of the Fishery (as of 06/20/2011)

Double Lake is a 246-acre lake located near Storden in Cottonwood County. The lake consists of two separate basins connected by a six foot diameter culvert. This culvert is the only boat access available to enter the South basin. This is a class 43 lake that is managed primarily for walleye and secondarily for black crappie, yellow perch, and northern pike. The lake has not been opened to liberalized fishing since installation of an aeration system in 1984. Although both basins are aerated they have experienced partial winterkills in recent years. This may account for overall low numbers of most species present compared to previous sampling. Despite low oxygen readings at times, Double still exhibits a highly diverse fish community with sixteen species sampled. This is likely due to a direct connection to the Cottonwood River via Highwater Creek. Commercial fishing has removed carp, buffalo, white suckers, and black bullheads in the past. The Double Lake agricultural land use practices, water quality, and bank erosion have created an environment that is difficult for aquatic vegetation to grow and survive. This situation challenges some fish populations to self perpetuate because of poor spawning habitats. A population assessment was conducted during the week of June 20, 2011 using 2 gill nets and 4 trap nets.

Freshwater drum appeared in Double Lake assessments for the first time in 1999. The Flandreau dam on the Cottonwood River at New Ulm was removed in 1995, fueling speculation that drum may have moved upstream in the Cottonwood River and Highwater Creek to Double Lake. The drum population has continued to decline since their peak in 1999 with current numbers at 4.5 per gill net. This dam removal may be partially responsible for allowing passage of four new species into Double Lake. They are present in low numbers and include channel catfish, shorthead redhorse, stonecat, and bluegill.

Walleye have always been popular in Double Lake. There was a decrease in walleye numbers when compared to surveys done in 1999, 2003, and 2007. The gill net catch rate was 8.7 in 2007 compared to 3.3 in 1999 and 2003. This year the catch rate in gill nets was 3.0 per gill net. Lengths of walleye caught in our gill nets ranged from 7.0 to 17.0 inches and averaged 12.0 inches. The lake is presently stocked by DNR with walleye fingerlings two of every three years. The Red Rock Sportsmen's Club has also elected to purchase walleye and northern pike to stock in some years.

Double Lake has a reputation for excellent crappie angling over the years. This may change for a few years since our assessment captured near record low numbers of black crappie in trap nets at 3.0 per net. The crappies caught appear to be from three year classes and ranged in size from 5.5 to 9.5 inches.

No northern pike were sampled during the 2011 assessment despite stockings of fingerlings in 2005 and 2006. They may have been harvested, exited the lake during high water, or been victims of winterkill. The Red Rock Sportsmen's Club in conjunction with the DNR is planning to restock northern pike in 2012.

Yellow perch numbers were low in 1999, 2003, and 2007. According to our survey in 2011, numbers of yellow perch have increased significantly to 14.5 per gill net. Total lengths ranged from 5.5 to 9.0 inches with an average length of 7.2 inches. These perch should provide some quality angling over the next couple years.

White sucker and bigmouth buffalo populations are at an "all time" high, whereas black bullhead are at an "all time" low.

Other species sampled during our survey included, common carp, white crappie, yellow bullhead, green sunfish, and orange spotted sunfish.

To maintain a healthy fishery in Double Lake, we need to promote Best Management Practices (BMPs) within the watershed to help reduce nutrients entering the lake. High nutrients and sediments in a lake can cause algae blooms and reduce water clarity.

Prepared by Charles Obler


For more information on this lake, contact:

Area Fisheries Supervisor
175 Co Rd 26
Windom, MN 56101-1868
Phone: (507) 831-2900
Internet: Windom Fisheries
E-Mail: Windom.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
No depth map available.


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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