Fisheries Lake Survey

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Name: Eagle (Orrock)

Nearest Town: Big Lake
Primary County: Sherburne
Survey Date: 08/13/2012
Inventory Number: 71006700
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Public Access Information

Ownership Type Description
DNR Concrete State-owned designated access on NW side


Lake Characteristics

Lake Area (acres): 462.72
Littoral Area (acres): 330
Maximum Depth (ft): 18
Water Clarity (ft): 3

Dominant Bottom Substrate: Sand (Abundant)
Abundance of Aquatic Plants: 30 Varieties Sampled
Maximum Depth of Plant Growth (ft): 6.0 (5.5-7)


Did you know? Fishing piers are installed on lakes to provide opportunities for shore fishing.

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 Gill net 9.12 7.7 - 104.7 0.73 0.2 - 0.5
Black Crappie Trap net 1.00 2.1 - 24.1 0.29 0.2 - 0.4
Gill net 45.88 1.7 - 17.5 0.25 0.1 - 0.3
Bluegill Trap net 12.70 3.5 - 57.1 0.09 0.1 - 0.3
Gill net 5.88 N/A 0.14 N/A
Bowfin (dogfish) Gill net 0.50 0.3 - 1.3 3.59 2.0 - 4.4
Brown Bullhead Gill net 0.12 0.8 - 7.0 1.53 0.3 - 0.8
Common Carp Trap net 0.20 0.4 - 2.4 5.46 1.8 - 5.1
Hybrid Sunfish Trap net 0.50 N/A 0.18 N/A
Largemouth Bass Trap net 0.30 0.2 - 0.8 1.95 0.3 - 1.5
Gill net 0.88 0.3 - 0.6 1.22 0.5 - 1.5
Northern Pike Gill net 8.25 2.0 - 10.8 2.88 1.7 - 3.1
Pumpkinseed Gill net 0.12 N/A 0.20 N/A
Walleye Trap net 0.30 0.3 - 0.8 2.68 0.9 - 3.5
Gill net 3.62 0.8 - 3.8 1.79 1.4 - 3.0
White Sucker Trap net 0.20 0.2 - 1.2 1.09 1.3 - 2.5
Gill net 3.00 0.5 - 2.3 1.10 1.6 - 2.5
Yellow Bullhead Trap net 0.30 1.0 - 7.1 1.11 0.4 - 0.8
Gill net 0.75 0.5 - 5.0 0.81 0.4 - 0.8
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 17 42 14 0 0 0 0 73
black crappie 26 347 4 0 0 0 0 0 377
bluegill 127 47 0 0 0 0 0 0 174
bowfin (dogfish) 0 0 0 0 0 4 0 0 4
brown bullhead 0 0 0 1 0 0 0 0 1
common carp 0 0 0 0 1 0 1 0 2
hybrid sunfish 3 2 0 0 0 0 0 0 5
largemouth bass 1 0 3 2 4 0 0 0 10
northern pike 0 0 0 0 15 31 14 6 66
pumpkinseed 0 1 0 0 0 0 0 0 1
walleye 0 2 2 1 17 10 0 0 32
white sucker 0 0 4 19 3 0 0 0 26
yellow bullhead 0 0 5 4 0 0 0 0 9


For the record, the largest Shortnose Gar taken in Minnesota weighed 4 lbs., 9.6 oz. and was caught:

    Where: Mississippi River, Hennepin County
    When: 7/22/84
    Statistics: 34.6" length, 10" girth

Fish Stocking Activity

Fish Stocked by Species for the Last Ten Years

Year Species Size Number Pounds
2011 Walleye1 fingerlings 1,400 50.0
2010 Walleye1 fingerlings 2,640 120.0
2009 Walleye1 fingerlings 1,064 56.0
2007 Walleye1 fingerlings 1,500 50.0
2004 Walleye1 fingerlings 2,600 130.0

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
EAGLE
Sherburne Co., 71006700
Carp All sizes        
Crappie   All sizes     Mercury
Northern Pike All sizes        

General Population

LAKE NAME
County, DOWID
Species Meal Advice Contaminants
Unrestricted 1 meal/week 1 meal/month Do not eat
EAGLE
Sherburne Co., 71006700
Carp All sizes        
Crappie All sizes        
Northern Pike 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 08/13/2012)

Eagle Lake is a 463 acre recreational development lake located 3 miles north of the City of Big Lake. The lake has a maximum depth of 18 feet and was designated as infested with Eurasian watermilfoil in 2005. Twenty one species of aquatic plants were identified with submersed plants growing to a maximum depth of seven feet. Curly-leaf pondweed grew at or near the surface on 5.8% of the surface area. The lake is primarily managed for largemouth bass and the DNR has not stocked walleye since 1991; however the lake association has stocked walleye fingerlings since 2000 and annually since 2007. There is one public access located on the NW side of the lake off of CR 75.

The catch of northern pike was significantly higher than in 2002, but within the range of expected values for similar lakes. Northern pike sampled during the survey ranged from 16 to 32 inches with an average length and weight of 23 inches and 2.9 pounds. Growth of northern pike was similar to the statewide average with northern pike reaching 23 inches by age 5.

Walleye fry were stocked by the DNR multiple times between 1971 and 1991, but due to limited success stocking was discontinued after 1991. The Eagle Lake Association began stocking walleye fingerlings in 2000 and since 2007 have stocked walleye fingerlings annually. The catch rate of walleye was higher than 2002, but within the ranged of expected values for similar lakes. Walleye ranged in length from 8 to 25 inches with an average length and weight of 17 inches and 1.9 pounds. Growth of walleye was fast with walleye reaching 16 inches by age 4.

Largemouth bass were sampled during daytime electrofishing on May 2, 2012. A total of 62 largemouth bass were captured in 1.2 hours for a catch rate of 53/hour. This was higher than the median catch rate for daytime electrofishing in the Montrose area (37.8/hr). Largemouth bass ranged in length from 6 to 19.5 inches with an average length and weight of 12 inches and 1.1 pounds. Growth of largemouth bass was average, reaching 12 inches by age 4.

The trap net catch of black crappie was below expected values for similar lakes; however, the gill net catch was over 2.5 times higher than expected values for similar lakes. Black crappie collected ranged in length from 4 to 10 inches with an average length and weight of 8 inches and 0.3 pounds. Growth of black crappie was slow, reaching 8 inches in 5 years.

Bluegill catch (12.7/trap net) was higher than in 2002 (4.8/trap net), but within the range of expected values for similar lakes. Bluegill ranged in length from 2 to 7 inches, with an average length of 5 inches. Growth of bluegill was slow with bluegill reaching 7 inches in 6 years.

Other species sampled during the survey included: black, brown and yellow bullhead, banded killifish, blacknose shiner, bluntnose minnow, bowfin (dogfish), brook silverside, common carp, fathead minnow, green, hybrid, and pumpkinseed sunfish, Johnny darter, Iowa darter, tadpole madtom, yellow perch, and white sucker.


For more information on this lake, contact:

Area Fisheries Supervisor
7372 State Hwy 25 SW
Montrose, MN 55363
Phone: (763) 675-3301
Internet: Montrose Fisheries
E-Mail: Montrose.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 B0483 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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