Fisheries Lake Survey

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Name: Gorman

Nearest Town: Le Center
Primary County: Le Sueur
Survey Date: 07/07/2014
Inventory Number: 40003200
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Public Access Information

Ownership Type Description
County Other
County Gravel
DNR Concrete


Lake Characteristics

Lake Area (acres): 521.12
Littoral Area (acres): 521.12
Maximum Depth (ft): 14
Water Clarity (ft): 6.5

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 2014 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 6.64 2.6 - 5.8
Black Bullhead Trap net 2.50 11.5 - 132.6 1.07 0.2 - 0.4
Gill net 2.67 30.3 - 150.6 0.95 0.2 - 0.4
Black Crappie Trap net 1.88 1.2 - 20.5 0.46 0.2 - 0.5
Gill net 5.33 1.4 - 13.8 0.34 0.2 - 0.4
Bluegill Trap net 2.88 1.2 - 20.0 0.46 0.1 - 0.4
Gill net 1.22 N/A 0.60 N/A
Bowfin (dogfish) Trap net 2.75 0.3 - 0.9 3.67 2.7 - 3.8
Gill net 1.89 0.2 - 0.5 4.18 1.8 - 3.1
Common Carp Trap net 7.25 1.0 - 5.5 5.76 1.4 - 4.6
Gill net 0.22 1.0 - 13.8 7.28 0.8 - 3.7
Freshwater Drum Trap net 3.75 0.2 - 3.3 2.01 0.3 - 1.0
Gill net 0.67 0.5 - 8.3 1.36 0.4 - 1.7
Northern Pike Gill net 3.56 1.1 - 8.0 2.52 1.8 - 3.4
Walleye Trap net 0.12 0.5 - 3.0 0.13 0.8 - 2.3
Gill net 3.67 2.3 - 18.1 1.77 1.0 - 2.3
White Bass Gill net 0.67 0.3 - 9.9 1.28 N/A
White Sucker Gill net 0.56 0.8 - 6.5 2.85 0.9 - 2.0
Yellow Perch Gill net 7.67 2.7 - 25.0 0.39 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 2014 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 0 0 0 2 1 1 0 4
black bullhead 0 2 23 19 0 0 0 0 44
black crappie 18 22 19 0 0 0 0 0 59
bluegill 0 33 0 0 0 0 0 0 33
bowfin (dogfish) 0 0 0 0 5 30 4 0 39
common carp 0 0 0 0 9 41 9 1 60
freshwater drum 0 3 0 9 24 0 0 0 36
northern pike 0 0 0 2 10 12 6 0 30
walleye 0 6 1 4 17 5 0 0 33
white bass 0 0 0 6 0 0 0 0 6
white sucker 0 0 0 0 4 0 0 0 4
yellow perch 15 14 33 0 0 0 0 0 62


For the record, the largest Rainbow Trout taken in Minnesota weighed 17 lbs., 6 oz. and was caught:

    Where: Knife River, Lake County
    When: 1/19/74
    Statistics: 36.9" length

Fish Stocking Activity

Fish Stocked by Species for the Last Ten Years

Year Species Size Number Pounds
2014 northern pike fry 78,561 1.5
  walleye fry 746,571 7.3
2013 Northern Pike fry 47,792 1.0
  Walleye fry 749,512 8.0
2012 Northern Pike fry 63,450 0.9
  Walleye fry 751,170 7.3
2011 Northern Pike fry 92,340 1.6
2010 Northern Pike fry 56,924 0.9
  Walleye fry 763,798 7.0
2009 Northern Pike fry 92,880 1.7
  Walleye fry 753,337 7.5
2008 Walleye fry 717,500 7.0
2006 Walleye fry 739,650 7.5
2005 Walleye fry 767,025 7.5

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
GORMAN
Le Sueur Co., 40003200
Bluegill Sunfish   All sizes     Mercury
Largemouth Bass     All sizes   Mercury
Northern Pike     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
GORMAN
Le Sueur Co., 40003200
Bluegill Sunfish All sizes        
Largemouth Bass   All sizes     Mercury
Northern Pike   All sizes     Mercury
Walleye   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 07/07/2014)

Introduction Located in Le Sueur County, Gorman Lake is a 499 acre lake southeast of the town of Le Center. A DNR owned public access is located on the south end of the lake off Dodd Road. A county owned public access is located on the west side of the lake within the town of Cordova. Gorman Lake is a relatively shallow lake with a maximum depth of 14 feet. The lake is aerated each winter, so caution should be used when traveling on ice. Based on limnological variables, Gorman Lake is classified in Lake Class 43. Other area lakes within this classification include Scotch Lake (Le Sueur County), Rice Lake (Faribault County), and Loon Lake (Waseca County). Gorman Lake is managed primarily for walleye and secondarily for northern pike. A base walleye stocking plan of 748,500 fry (1,500 fry/littoral acre) stocked three out of every four years is in place. Northern pike fry (N = 90,000) are stocked annually to sustain the population. Gorman Lake was surveyed the week of July 7, 2014 as part of a regular monitoring program conducted by Minnesota DNR. This survey was intended to assess the fish community by deploying gill nets and trap nets, as well as recording water quality parameters.

Walleye Throughout the survey history, walleye abundance in Gorman Lake has varied from 1.1 fish/gill net in 1983 to 8.1 fish/gill net in 1994. The walleye catch rate from the 2014 survey was 3.7 fish/gill net, which is slightly above the long-term lake average of 3.3 fish/gill net. Walleye lengths ranged from 7.9 to 24.7 inches and averaged 15.9 inches, indicating a relatively good size structure. Growth rates appear to be moderately fast compared to other lakes in southern Minnesota, with three year old walleye averaging 15.5 inches. Walleye fry were recently stocked in Gorman Lake in 2012, 2013, and 2014 at a target rate of 1,500 fry per littoral acre. Since walleye fry are stocked three out of every four years, walleye will not be stocked again until 2016.

Northern Pike The northern pike catch rate in the 2014 survey was the highest rate in survey history at 3.6 fish/gill net, which is above the long-term average for Gorman Lake (2.0 fish/gill net). The catch rate of northern pike has steadily increased since its historic low of 0.9 fish/gill net in 1994. Northern pike lengths ranged from 14.4 to 29.3 inches and averaged 21.7 inches, indicating a relatively small size structure. Northern pike in southern Minnesota grow relatively fast. The average length of northern pike from Gorman Lake was 18.0 inches at age-2, 22.9 inches at age-3, and 24.7 inches at age-4. Northern pike fry are stocked annually in Gorman Lake at a target rate of 90,000 fry per year.

Bluegill With the exception of two surveys with relatively high catch rates (1983, 13.7 fish/net; 1999, 6.1 fish/net), bluegill abundance in Gorman Lake has remained moderately low. The 2014 bluegill catch rate was 2.9 fish/net, which is about average for lakes similar to Gorman Lake. The lengths of bluegill ranged from 7.3 to 8.5 inches and averaged 7.9 inches, indicating a good size structure. Although bluegill were not aged, a length frequency histogram suggests that all bluegill collected from trap nets in 2014 were from the same single year class. The absence of young bluegill from the survey may indicate lack of recent year classes and sporadic spawning success in Gorman Lake.

Black Crappie Black crappie catch rates bounced back from the record low rate of 2009 (0.2 fish/gill net) to a more moderate level in 2014 of 5.3 fish/gill net, which ranks above the long-term average for Gorman Lake (4.4 fish/gill net). Black crappie abundance in Gorman has been variable throughout the survey history and is likely dependent on a strong year class at least every three to five years to carry the population. The lengths of black crappie from 2014 gill nets ranged from 3.9 to 10.8 inches and averaged 7.4 inches, indicating a moderate size structure.

Yellow Perch Throughout the survey history in Gorman Lake, yellow perch catch rates have varied from 0.3 fish/gill net in 1994 to 36.3 fish/gill net in 2004, averaging 9.2 fish/gill net from 1970 to 2014. The 2014 catch rate was 7.7 fish/gill net. Yellow perch collected in 2014 ranged in length from 4.8 to 10.7 inches and averaged 8.4 inches, indicating a relatively small size structure. Yellow perch are an important prey source for predators in Gorman Lake, such as walleye. No stocking plan exists for yellow perch, so the population is sustained through natural recruitment.

Black Bullhead Historically, black bullhead abundance in Gorman Lake has been high, averaging 151.7 fish/gill net from 1970 to 1994. Since 1999, however, black bullhead numbers have been below 6.0 fish/gill net, except during a 2004 survey when the catch rate was 85.9 fish/gill net. The 2014 survey yielded only 2.7 fish/gill net, which is very low black bullhead abundance compared to lakes similar to Gorman Lake. Black bullhead from gill and trap nets ranged in length from 8.9 to 13.5 inches and averaged 11.4 inches. Younger, smaller individuals that are often preyed upon by walleye and northern pike were completely lacking from the survey.

Other Species Other fish species that were collected in the 2014 survey included white bass (N = 6), common carp (N = 60), bowfin (N = 39), freshwater drum (N = 36), white sucker (N = 5), and bigmouth buffalo (N = 4).

Anglers can play an important role in maintaining or improving a fish population by practicing selective harvest. Selective harvest allows for the harvest of smaller fish for consumption, while encouraging the release of medium to large fish that may contribute to natural recruitment. This practice helps maintain balance in the fish community and provides anglers the opportunity to catch more and larger fish in the future. Additionally, smaller fish often taste better and have fewer contaminants than larger, older fish from the same water body.

Shoreline property owners also play an important role in the overall health of an aquatic ecosystem, including the fish population. Natural shorelines, including vegetation, woody debris, and bottom substrates, provide valuable habitat for fish and wildlife, help maintain water quality, and reduce bank erosion. By leaving natural shorelines unaltered or restoring them to natural conditions, shoreline property owners are doing their part to maintain or improve a healthy ecosystem in the lake and protect the resource for future generations.


For more information on this lake, contact:

Area Fisheries Supervisor
PO Box 86
50317 Fish Hatchery Rd
Waterville, MN 56096-0086
Phone: (507) 362-4223
Internet: Waterville Fisheries
E-Mail: Waterville.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 C1532 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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