Lake information report

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Name: Mule

Nearest Town: Longville
Primary County: Cass
Survey Date: 07/07/2008
Inventory Number: 11020000
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Public Access Information

Ownership Type Description
DNR Gravel old public access - north end
DNR Asphalt West side directly off State Hwy 84.


Fishing Regulations:

Special and/or Experimental Fishing Regulations exist on this lake. Please refer to our online Minnesota Fishing Regulations.

Lake Characteristics

Lake Area (acres): 524.57
Littoral Area (acres): 182
Maximum Depth (ft): 47
Water Clarity (ft): 14.8 (14-15.5)

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


Did you know? Each year, DNR fisheries personnel stock game fish fry and fingerlings in lakes lacking habitat for natural reproduction.

Fish Sampled for the 2008 Survey Year

Species

Gear Used

Number of fish per net

Average Fish Weight (lbs)

Normal Range (lbs)

Caught

Normal Range

Black Crappie Gill net 1.33 0.3 - 1.7 0.36 0.2 - 0.5
Bluegill Trap net 21.67 7.7 - 43.4 0.21 0.1 - 0.2
Gill net 17.44 N/A 0.15 N/A
Brown Bullhead Trap net 0.33 0.3 - 1.0 0.92 0.7 - 1.0
Gill net 4.78 0.3 - 1.8 1.20 0.5 - 1.1
Largemouth Bass Trap net 0.44 0.4 - 1.5 1.18 0.2 - 0.7
Gill net 2.22 0.5 - 1.7 0.66 0.5 - 1.2
Northern Pike Trap net 1.11 N/A 1.70 N/A
Gill net 17.22 2.2 - 8.7 1.74 1.5 - 3.2
Pumpkinseed Trap net 2.33 1.4 - 5.9 0.08 0.1 - 0.2
Gill net 2.89 N/A 0.08 N/A
Rock Bass Trap net 1.78 0.8 - 3.7 0.44 0.2 - 0.4
Gill net 9.67 0.7 - 4.4 0.49 0.2 - 0.4
Smallmouth Bass Gill net 1.33 0.2 - 1.6 2.02 0.8 - 1.8
Tullibee (cisco) Gill net 3.67 1.3 - 10.4 2.72 0.3 - 1.0
Walleye Gill net 2.22 1.0 - 5.0 2.04 1.2 - 3.0
White Sucker Gill net 2.22 0.5 - 2.0 3.29 1.6 - 2.6
Yellow Perch Trap net 0.11 0.4 - 2.3 0.34 0.1 - 0.2
Gill net 1.22 1.5 - 13.8 0.14 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 2008 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 7 1 4 0 0 0 0 0 12
bluegill 164 187 1 0 0 0 0 0 352
brown bullhead 0 0 9 37 0 0 0 0 46
largemouth bass 1 8 9 4 2 0 0 0 24
northern pike 0 0 2 14 74 58 14 3 165
pumpkinseed 41 6 0 0 0 0 0 0 47
rock bass 6 64 33 0 0 0 0 0 103
smallmouth bass 0 0 2 2 8 0 0 0 12
tullibee (cisco) 0 0 0 0 33 0 0 0 33
walleye 0 1 3 2 7 7 0 0 20
white sucker 0 0 0 0 15 5 0 0 20
yellow perch 0 11 1 0 0 0 0 0 12


For the record, the largest Walleye-Sauger Hybrid taken in Minnesota weighed 9 lbs., 13.4 oz. and was caught:

    Where: Mississippi River near Red Wing, Goodhue County
    When: 3/20/99
    Statistics: 27" length, 17.75" girth

Fish Stocking Activity

Fish Stocked by Species for the Last Ten Years

Year Species Size Number Pounds
2012 Walleye fingerlings 3,125 246.0
  Walleye yearlings 761 236.0
2010 Walleye yearlings 3,061 312.0
  Walleye fingerlings 941 124.0
  Walleye adults 138 46.0
2009 Walleye fingerlings 7,148 366.0
  Walleye fry 250,000 2.1
2007 Walleye yearlings 80 21.0
  Walleye fry 250,000 2.1
  Walleye fingerlings 9,549 343.0
2005 Walleye fingerlings 5,547 364.0

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

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
MULE
Cass Co., 11020000
Bluegill Sunfish All sizes        
Cisco All sizes        
Crappie All sizes        
Largemouth Bass   All sizes     Mercury
Northern Pike   All sizes     Mercury
Smallmouth Bass   All sizes     Mercury
Walleye   All sizes     Mercury

General Population

LAKE NAME
County, DOWID
Species Meal Advice Contaminants
Unrestricted 1 meal/week 1 meal/month Do not eat
MULE
Cass Co., 11020000
Bluegill Sunfish All sizes        
Cisco All sizes        
Crappie All sizes        
Largemouth Bass All sizes        
Northern Pike All sizes        
Smallmouth Bass All sizes        
Walleye All sizes        

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 07/07/2008)

Mule Lake (#11-200) is a 456-acre lake located south of Longville, Minnesota that has 7.3 miles of shoreline and a maximum depth of 47 ft. The Minnesota Department of Natural Resources (MNDNR) has a public access on the west shore of the lake. MNDNR has classified Minnesota lakes into 43 different classes based on physical, chemical and other characteristics. Mule Lake is in Lake Class 23; other nearby lakes in this class include Baby and Ponto Lakes. The lake is primarily managed for northern pike, walleye, and yellow perch, and secondarily for smallmouth bass, largemouth bass, bluegill, and black crappie. According to a summer 2007 survey of anglers, sunfish account for just over one-fourth of the fish caught on Mule Lake, while largemouth and smallmouth bass combined account for almost one-half (46 percent) of the fish caught.

Mule Lake has an abundant population of northern pike. The 2008 catch in MNDNR experimental gill nets was higher than in previous assessments and was more abundant than the typical catch in other lakes in Lake Class 23. Average size of sampled northern pike was 20 inches and 2.67 lbs, however fish up to 32 inches were found. In the 2007 angler survey, this species made up about twelve percent of angler catch.

Walleye abundance in 2008 on Mule Lake was similar to other lakes in this Lake Class, but below management goals. Average size of walleye in the 2008 net sample was 17 inches and 2 lbs, however walleye up to 24 inches were sampled. Mule Lake has a special regulation restricting the walleye limit to three.

Numbers of yellow perch collected in 2008 was low compared to other lakes of this type, and fish up to 9 inches were sampled. Mule Lake has a special regulation requiring catch and release of all largemouth and smallmouth bass. There was a good number of smallmouth bass sampled compared to other Lake Class 23 lakes, and fish up to almost 20 inches were found. Mule Lake also has an abundant population of largemouth bass; fish up to 18 inches were present. Abundance of bluegill was similar to that found in other Lake Class 23 lakes and fish up to 9 inches were found. The catch of black crappie in 2008 MNDNR experimental gill nets compared favorably with other lakes of this type. Black crappie up to 11 inches were found. Abundance of cisco (tullibee) in Mule Lake was good, and cisco up to 19 inches were collected. Cisco provide good forage for other species and are also sought by anglers on some lakes.

Anglers can help maintain or improve the quality of fishing by practicing selective harvest. Selective harvest allows for the harvest of smaller fish for table fare, but encourages release of medium- to large-sized fish. Releasing these fish can help maintain balance in the fish community in Mule Lake and provide anglers the opportunity to catch more and larger fish in the future.

Shoreline habitat consists of aquatic plants, woody plants and natural lake bottom soils. Plants in the water and at the waters edge provide habitat, prevent erosion and absorb excess nutrients. Shrubs, trees, and woody debris such as fallen trees or limbs provide good habitat both above and below the water and should be left in place. By leaving a buffer strip of natural vegetation along the shoreline, property owners can reduce erosion, help maintain water quality, and provide habitat and travel corridors for wildlife.


For more information on this lake, contact:

Area Fisheries Supervisor
07316 State Hwy 371 NW
Walker, MN 56484
Phone: (218) 547-1683
Internet: Walker Fisheries
E-Mail: Walker.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 C0151 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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