Lake information report

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Name: Serpent

Nearest Town: Crosby
Primary County: Crow Wing
Survey Date: 08/18/2008
Inventory Number: 18009000
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Public Access Information

Ownership Type Description
DNR Concrete Located on the east end off of Hwy. 6.
City Concrete Locate on the west end at the city park.


Lake Characteristics

Lake Area (acres): 1103.04
Littoral Area (acres): 338
Maximum Depth (ft): 65
Water Clarity (ft): 13.5

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


Did you know? The annual budget for the Section of Fisheries is approximately $17 million, which is funded primarily by fishing license and stamp fees and by a federal excise tax on fishing and boating equipment.

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 Trap net 0.42 0.5 - 2.2 0.51 0.3 - 0.5
Gill net 0.58 0.3 - 1.7 0.53 0.2 - 0.5
Bluegill Trap net 18.33 7.7 - 43.4 0.09 0.1 - 0.2
Gill net 5.33 N/A 0.25 N/A
Bowfin (dogfish) Trap net 0.08 0.3 - 1.0 5.80 2.6 - 4.9
Brown Bullhead Trap net 0.50 0.3 - 1.0 0.94 0.7 - 1.0
Gill net 1.33 0.3 - 1.8 1.03 0.5 - 1.1
Hybrid Sunfish Trap net 0.67 N/A 0.21 N/A
Largemouth Bass Trap net 1.17 0.4 - 1.5 0.32 0.2 - 0.7
Gill net 1.42 0.5 - 1.7 0.82 0.5 - 1.2
Northern Pike Trap net 1.17 N/A 1.90 N/A
Gill net 6.42 2.2 - 8.7 2.31 1.5 - 3.2
Pumpkinseed Trap net 2.75 1.4 - 5.9 0.13 0.1 - 0.2
Gill net 0.83 N/A 0.22 N/A
Rock Bass Trap net 2.92 0.8 - 3.7 0.17 0.2 - 0.4
Gill net 9.50 0.7 - 4.4 0.34 0.2 - 0.4
Smallmouth Bass Trap net 0.08 0.2 - 0.8 0.09 0.2 - 0.7
Gill net 0.75 0.2 - 1.6 1.52 0.8 - 1.8
Tullibee (cisco) Gill net 0.08 1.3 - 10.4 0.26 0.3 - 1.0
Walleye Trap net 0.17 0.2 - 0.7 0.25 0.7 - 2.8
Gill net 4.67 1.0 - 5.0 1.22 1.2 - 3.0
White Sucker Gill net 1.67 0.5 - 2.0 2.14 1.6 - 2.6
Yellow Bullhead Trap net 0.75 1.0 - 5.3 0.75 0.5 - 0.9
Gill net 2.00 1.0 - 6.0 0.89 0.4 - 0.7
Yellow Perch Trap net 1.42 0.4 - 2.3 0.12 0.1 - 0.2
Gill net 1.42 1.5 - 13.8 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 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 0 1 11 0 0 0 0 0 12
bluegill 209 70 0 0 1 0 0 0 284
bowfin (dogfish) 0 0 0 0 0 0 1 0 1
brown bullhead 0 1 6 15 0 0 0 0 22
hybrid sunfish 4 4 0 0 0 0 0 0 8
largemouth bass 6 10 11 1 3 0 0 0 31
northern pike 0 0 0 5 31 38 16 1 91
pumpkinseed 27 16 0 0 0 0 0 0 43
rock bass 70 56 23 0 0 0 0 0 149
smallmouth bass 1 0 3 3 3 0 0 0 10
tullibee (cisco) 0 0 1 0 0 0 0 0 1
walleye 0 20 9 5 18 5 1 0 58
white sucker 0 0 0 0 19 1 0 0 20
yellow bullhead 0 4 16 13 0 0 0 0 33
yellow perch 10 22 0 0 0 0 0 0 34


For the record, the largest Atlantic Salmon taken in Minnesota weighed 12 lbs., 13 oz. and was caught:

    Where: Baptism River, Lake County
    When: 10/12/91
    Statistics: 35.5" length, 16.5" girth

Fish Stocking Activity

Fish Stocked by Species for the Last Ten Years

Year Species Size Number Pounds
2013 Walleye fingerlings 17,272 681.0
2011 Walleye fingerlings 14,017 676.0
2009 Walleye* fingerlings 8,423 676.0
2007 Walleye* fingerlings 10,625 676.0
2005 Walleye yearlings 1,028 257.0
  Walleye fingerlings 6,980 349.0
  Walleye adults 140 70.0

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
SERPENT
Crow Wing Co., 18009000
Bluegill Sunfish All sizes        
Largemouth Bass   All sizes     Mercury
Northern Pike   All sizes     Mercury
Walleye   All sizes     Mercury
White Sucker All sizes        

General Population

LAKE NAME
County, DOWID
Species Meal Advice Contaminants
Unrestricted 1 meal/week 1 meal/month Do not eat
SERPENT
Crow Wing Co., 18009000
Bluegill Sunfish All sizes        
Largemouth Bass All sizes        
Northern Pike   All sizes     Mercury
Walleye All sizes        
White Sucker 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 08/18/2008)

Serpent lake is a 1,057 acre lake located between the towns of Crosby and Deerwood. There are two public accesses, one on the east shore and one on the northwest. The lake is heavily developed with over 250 homes/cabins along 9 miles of shoreline. The maximum depth is 65 ft. and about 32% of the lake is 15 ft. deep or less. Shallow water substrates are primarily sand and gravel. The aquatic plant community is relatively diverse with 30 species present. Emergent plants such as bulrush and water lilies are important for shoreline protection, maintaining water quality, and provide essential spawning habitat for bass and panfish species. Submerged plants provide food and cover needed by fish and other aquatic species.

Walleyes are currently stocked as fingerlings at a rate of two pounds/littoral acre in alternate (odd numbered) years. The 2008 walleye catch of 4.67/GN was average for the lake class and similar to catches going back to 1987. The most abundant year class was from 2007 (48% of the catch). As a result, average size dropped to 13.5 inches and 1.2 pounds compared to the 2002 average of 19.4" and 2.4 pounds.

Northern pike were caught in "average" numbers in 2008 (6.42/GN) which was similar to the 2002 catch of 6.92/GN. The 2006 and 2005 year classes were most abundant. Average size increased from 20.1" and 1.7 lbs in 2002 to 21.5" and 2.3 lbs in 2008. Pike growth remained "average."

The largemouth bass catch in trap nets showed a statistically valid increase from 0.5/TN to 1.17/TN in 2008. The spring electrofishing catch increased from 43.4 to 72.0/hr. Average size decreased slightly compared to 2002. Smallmouth bass abundance (0.75/GN) increased into the "average" category in 2008. The spring electrofishing catch rate (5.4/hr) was the same as in 2002. Bass growth rates were "average."

The bluegill catch of 18.33/TN was similar to that of 2002 (17.58/TN) and was near the lake class median value of 19.83/TN. Few bluegills of seven inches of longer were sampled in 2008. Black crappie abundance was "low" in trap nets and "average" in gill nets. Most crappies were at least eight inches long in 2008.

Tulibees and yellow perch are important forage species for the lake's gamefish. Catches of both were in the "low" category in 2008. Perch, however, showed a statistically valid increase in abundance, compared to 2002.


For more information on this lake, contact:

Area Fisheries Supervisor
1601 Minnesota Dr
Brainerd, MN 56401
Phone: (218) 828-2550
Internet: Brainerd Fisheries
E-Mail: Brainerd.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 B0115 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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