Fisheries Lake Survey

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Name: Medicine

Nearest Town: Plymouth
Primary County: Hennepin
Survey Date: 07/09/2012
Inventory Number: 27010400
Buy your walleye stamp todayPurchase a walleye stamp. Your voluntary contribution will be used to support walleye stocking.

Public Access Information

Ownership Type Description
Private Property Gravel
County Asphalt


Lake Characteristics

Lake Area (acres): 925.24
Littoral Area (acres): 399
Maximum Depth (ft): 49
Water Clarity (ft): 5.4 (5-5.75)

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


Did you know? Spawning habitat improvements can enhance naturally reproducing populations of fish species such as walleye and northern pike.

Fish Sampled for the 2012 Survey Year

Species

Gear Used

Number of fish per net

Average Fish Weight (lbs)

Normal Range (lbs)

Caught

Normal Range

Black Bullhead Trap net 0.09 0.7 - 25.7 1.18 0.3 - 0.6
Gill net 0.22 2.5 - 45.0 0.68 0.3 - 0.7
Black Crappie Trap net 4.18 1.8 - 21.2 0.16 0.2 - 0.3
Gill net 8.44 2.5 - 16.5 0.21 0.1 - 0.3
Bluegill Trap net 30.91 7.5 - 62.5 0.20 0.1 - 0.3
Gill net 32.00 N/A 0.23 N/A
Bowfin (dogfish) Trap net 0.91 0.4 - 1.3 3.36 2.3 - 4.1
Gill net 0.22 0.2 - 0.8 2.42 2.4 - 4.2
Brown Bullhead Trap net 0.36 0.2 - 1.4 1.07 0.5 - 1.0
Gill net 4.00 0.4 - 2.0 1.35 0.5 - 1.0
Golden Shiner Trap net 0.18 0.2 - 0.8 0.06 0.1 - 0.1
Hybrid Sunfish Trap net 0.91 N/A 0.30 N/A
Largemouth Bass Trap net 0.18 0.2 - 0.7 1.33 0.2 - 0.9
Gill net 0.11 0.3 - 0.8 1.36 0.4 - 1.0
Northern Pike Trap net 0.45 N/A 2.05 N/A
Gill net 13.89 1.5 - 7.3 4.62 2.0 - 3.5
Pumpkinseed Trap net 1.91 0.7 - 4.2 0.23 0.1 - 0.2
Gill net 0.33 N/A 0.27 N/A
Walleye Trap net 0.18 0.3 - 1.2 2.83 0.8 - 2.8
Gill net 1.44 1.2 - 6.3 2.96 1.2 - 2.7
White Sucker Trap net 0.18 0.2 - 1.0 2.20 1.6 - 2.8
Gill net 0.33 0.4 - 2.2 3.35 1.5 - 2.4
Yellow Bullhead Trap net 3.45 0.9 - 5.7 0.84 0.5 - 0.8
Gill net 15.44 0.5 - 7.5 0.98 0.5 - 0.8
Yellow Perch Trap net 0.55 0.3 - 1.7 0.20 0.1 - 0.2
Gill net 0.67 2.0 - 27.9 0.17 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 2012 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 bullhead 0 0 2 1 0 0 0 0 3
black crappie 19 97 0 0 0 0 0 0 122
bluegill 152 467 0 0 0 0 0 0 628
bowfin (dogfish) 0 0 0 0 5 7 0 0 12
brown bullhead 0 0 6 33 1 0 0 0 40
golden shiner 2 0 0 0 0 0 0 0 2
hybrid sunfish 1 9 0 0 0 0 0 0 10
largemouth bass 0 0 1 1 1 0 0 0 3
northern pike 0 0 0 1 3 48 41 31 130
pumpkinseed 4 20 0 0 0 0 0 0 24
walleye 0 0 0 1 5 7 1 0 15
white sucker 0 0 0 1 2 2 0 0 5
yellow bullhead 0 7 84 85 0 0 0 0 177
yellow perch 0 8 0 0 0 0 0 0 12


For the record, the largest Bowfin taken in Minnesota weighed 11 lbs., 4 oz. and was caught:

    Where: St. Croix River, Washington County
    When: 10/7/2008
    Statistics: 35" length, 20" girth

Fish Stocking Activity

Fish Stocked by Species for the Last Ten Years

Year Species Size Number Pounds
2013 Walleye fingerlings 20,659 832.0
2011 Walleye 59,570 62.2
2009 Walleye 7,002 4.7
  Walleye 21,938 18.1
2007 Walleye fingerlings 6,888 490.0
2005 Walleye fingerlings 22,070 797.6

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
MEDICINE
Hennepin Co., 27010400
Bluegill Sunfish   All sizes     Mercury
Bullhead   All sizes     Mercury
Carp   All sizes     Mercury
Crappie   All sizes     Mercury
Largemouth Bass   All sizes     PFOS
Northern Pike     All sizes   Mercury

General Population

LAKE NAME
County, DOWID
Species Meal Advice Contaminants
Unrestricted 1 meal/week 1 meal/month Do not eat
MEDICINE
Hennepin Co., 27010400
Bluegill Sunfish All sizes        
Bullhead All sizes        
Carp All sizes        
Crappie All sizes        
Largemouth Bass   All sizes     PFOS
Northern Pike   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 07/09/2012)

Medicine Lake is an 886-acre lake located in Plymouth. Clifton E. French Regional Park (a Three Rivers Parks District) borders the northwest portion of the lake and provides the only public boat launch during the open water season. Harty's Boatworks, located on the east side of the lake, rents boats and provides drive-on wintertime access. Two Plymouth city parks provide year-round access; however, motorized boats cannot be launched at either park. Medicine Lake offers a diverse sport fish community consisting of black crappie, bluegill, largemouth bass, pumpkinseed, northern pike, walleye, and yellow perch. Since 1999, walleye have been stocked every other year.

The relative abundance and size of northern pike have increased over the three surveys from 2006  present. Gillnet sampling results from this assessment showed the average northern pike weighed about 4.5 pounds and was just under 27.0 inches in length. Sixty-seven percent of gillnetted northern pike were greater than 24.0 inches in length, and 25% were larger than 30 inches in length. Seven year classes were present in the northern pike catch (2004 - 2010), with a majority of fish either age 4 or 5. Three-year-old fish attained an average length of 21.8 inches, and, by age 7, pike had reached an average length of 31.5 inches.

Although the abundance of walleye is less than average for this type of lake, the sampled fish were of good size. The average walleye sampled was 20.0 inches in length and weighed 2.73 lbs. The largest walleye measured 26.8 inches in length. Forty-two percent of gill netted walleye were between 15.0 and 20.0 inches in length.

Fall electrofishing targeted the largemouth bass population. While the average length of sampled bass was 8.4 inches, the largest bass measured was 17.5 inches in length. Bass ages 1 through 6 were sampled, and the fish attained an average length of 12.0 inches by age 4.

The abundance of yellow perch has steadily declined since 2000. During this assessment, only 3 perch were sampled by gill nets and 5 by trap nets. Average length of perch from both gear types was 7.4 inches; the largest fish measured 8.07 inches.

Bluegill and black crappie were caught in average abundances and at average sizes. The average length of sampled bluegill was 6.2 inches, with the largest fish measuring 7.7 inches. Average length of sampled crappie was 7.0 inches, with the largest fish measuring 8.7 inches.


For more information on this lake, contact:

Area Fisheries Supervisor
7050 E Hwy 101, Suite 100
Shakopee, MN 55379
Phone: (952) 496-4141
Internet: West Metro Fisheries
E-Mail: MetroWest.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 B0310 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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