Fisheries Lake Survey

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Name: Weaver

Nearest Town: Maple Grove
Primary County: Hennepin
Survey Date: 07/14/2013
Inventory Number: 27011700

Public Access Information

Ownership Type Description
City Concrete Off MN Highway 10


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): 152.09
Littoral Area (acres): 76
Maximum Depth (ft): 57
Water Clarity (ft): 6.0 (5-7)

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


Did you know? The state operates 17 hatcheries: 5 for trout and salmon and 12 for coolwater species.

Fish Sampled for the 2013 Survey Year

Species

Gear Used

Number of fish per net

Average Fish Weight (lbs)

Normal Range (lbs)

Caught

Normal Range

Black Bullhead Trap net 0.11 0.7 - 25.7 1.67 0.3 - 0.6
Gill net 0.33 2.5 - 45.0 1.00 0.3 - 0.7
Black Crappie Trap net 3.22 1.8 - 21.2 0.30 0.2 - 0.3
Gill net 4.00 2.5 - 16.5 0.21 0.1 - 0.3
Bluegill Trap net 67.22 7.5 - 62.5 0.21 0.1 - 0.3
Gill net 4.67 N/A 0.21 N/A
Green Sunfish Trap net 0.22 0.2 - 1.3 0.09 0.1 - 0.2
Hybrid Sunfish Trap net 1.44 N/A 0.29 N/A
Largemouth Bass Trap net 0.33 0.2 - 0.7 0.37 0.2 - 0.9
Gill net 0.67 0.3 - 0.8 0.68 0.4 - 1.0
Northern Pike Trap net 0.33 N/A 1.34 N/A
Gill net 16.33 1.5 - 7.3 2.65 2.0 - 3.5
Pumpkinseed Trap net 1.89 0.7 - 4.2 0.21 0.1 - 0.2
Yellow Bullhead Trap net 3.00 0.9 - 5.7 0.55 0.5 - 0.8
Gill net 17.00 0.5 - 7.5 0.66 0.5 - 0.8
Yellow Perch Trap net 0.11 0.3 - 1.7 0.24 0.1 - 0.2
Gill net 0.50 2.0 - 27.9 0.13 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 2013 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 1 2 0 0 0 0 3
black crappie 7 35 9 0 0 0 0 0 53
bluegill 119 509 0 0 0 0 0 0 633
green sunfish 2 0 0 0 0 0 0 0 2
hybrid sunfish 1 12 0 0 0 0 0 0 13
largemouth bass 0 3 3 1 0 0 0 0 7
northern pike 0 0 0 0 44 31 22 4 101
pumpkinseed 5 12 0 0 0 0 0 0 17
yellow bullhead 1 42 63 19 3 0 0 0 129
yellow perch 0 3 0 0 0 0 0 0 4


For the record, the largest Yellow Bullhead taken in Minnesota weighed 3 lbs., 10.5 oz. and was caught:

    Where: Osakis Lake, Todd County
    When: 8/5/02
    Statistics: 17 7/8" length, 11 3/4" girth

Fish Stocking Activity

Fish Stocked by Species for the Last Ten Years

Year Species Size Number Pounds
2006 Tiger Muskellunge1 fingerlings 230 86.1

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
WEAVER
Hennepin Co., 27011700
Bluegill Sunfish   All sizes     Mercury
Bullhead   All sizes     Mercury
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
WEAVER
Hennepin Co., 27011700
Bluegill Sunfish All sizes        
Bullhead   All sizes     Mercury
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 07/14/2013)

Weaver Lake is located in the town of Maple Grove. It is 152 acres, with a maximum depth of 57 feet. A City-owned boat ramp is located on the western shore, as well as a City park on the southeast shore that offers shore fishing among its amenities. The lake was stocked with Hybrid (Tiger) Muskellunge from 1984  2006. Currently, the lake is managed for Northern Pike, Largemouth Bass, and Bluegill. In 2013, population assessment was conducted, consisting of summer gill netting and trap netting.

Northern Pike were highly abundant in 2013, and their average size was not very large. The gill net catch rate, 16.3 fish per net, has substantially increased since the 2002 and 2008 surveys, when catch rates were 9.7 fish/net and 5.7 fish/net, respectively. Average weight of fish has decreased since the previous survey, from 5.7 pounds in 2008, to 2.7 pounds in 2013. Fifty-five percent of the sample was longer than 21 inches, and only 8% was longer than 28 inches. The largest Northern Pike measured 33.8 inches. Fish ages 3 and 4 composed the majority of the sample (78%), averaging 20.8 inches and 22.8 inches, respectively. The abundant, younger fish (age 3 and 4) exhibit fast growth, while the older fish (age 6  10) appear to have grown more slowly.

Although Bluegill abundance has decreased since the previous survey (2008), it is still high for this type of lake. In 2008, 207.3 fish per trap net were caught and in 2013, 67.2 fish per trap net were caught. While abundance has changed dramatically, size of the fish has remained constant since 2008. The average size of Bluegill caught in 2013 was 6.4 inches and 0.2 pounds. Eighty-two percent of sampled fish were longer than 6 inches, and only 19% were longer than 7 inches. One Bluegill exceeded 8 inches, measuring 8.7 inches. Growth rates are below average, with fish reaching 6.2 inches by age 4 and 7.1 inches by age 6.

Seven Largemouth Bass were collected during the assessment; however, passive sampling gears, such as trap nets and gill nets, are not effective methods for collecting largemouth bass. The data presented for this species is not indicative of relative abundance. Electrofishing is the typical method for Largemouth Bass assessments but was not conducted during this survey. Mean size of sampled Largemouth Bass was 9.7 inches and 0.6 pounds, with the largest reaching 14.5 inches and 1.4 lbs.

Black Crappie abundance has remained steady since 2002 (2 previous surveys) at a below average level. In 2013, 4 fish per gill net were sampled, averaging 7.3 inches and 0.2 pounds. Forty-three percent of the catch was longer than 8 inches, and the largest fish measured 9.8 inches. Black Crappie growth is slower than average in Weaver Lake; fish reach 8 inches by age 5.


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 C0954 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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