Fisheries Lake Survey

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Name: Shallow

Nearest Town: Warba
Primary County: Itasca
Survey Date: 06/15/2009
Inventory Number: 31008400
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Public Access Information

Ownership Type Description
County Concrete


Lake Characteristics

Lake Area (acres): 538.94
Littoral Area (acres): 268
Maximum Depth (ft): 85
Water Clarity (ft): 16

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


Did you know? Fisheries personnel monitor and regulate aquaculture, fishing tournaments, commercial fishing operations, aquatic plant management, and aeration.

Fish Sampled for the 2009 Survey Year

Species

Gear Used

Number of fish per net

Average Fish Weight (lbs)

Normal Range (lbs)

Caught

Normal Range

Black Crappie Trap net 1.67 0.5 - 2.2 0.31 0.3 - 0.5
Gill net 2.11 0.3 - 1.7 0.22 0.2 - 0.5
Bluegill Trap net 41.78 7.7 - 43.4 0.27 0.1 - 0.2
Gill net 4.89 N/A 0.07 N/A
Brown Bullhead Gill net 0.11 0.3 - 1.8 1.45 0.5 - 1.1
Golden Shiner Trap net 0.22 0.1 - 1.0 0.05 0.1 - 0.2
Gill net 0.11 0.3 - 0.8 0.07 0.1 - 0.1
Hybrid Sunfish Trap net 0.78 N/A 0.41 N/A
Gill net 0.11 N/A 0.68 N/A
Largemouth Bass Trap net 1.78 0.4 - 1.5 0.58 0.2 - 0.7
Gill net 1.89 0.5 - 1.7 1.11 0.5 - 1.2
Northern Pike Gill net 2.78 2.2 - 8.7 3.75 1.5 - 3.2
Pumpkinseed Trap net 2.56 1.4 - 5.9 0.34 0.1 - 0.2
Gill net 0.56 N/A 0.18 N/A
Rock Bass Trap net 2.33 0.8 - 3.7 0.35 0.2 - 0.4
Gill net 1.44 0.7 - 4.4 0.22 0.2 - 0.4
Tullibee (cisco) Gill net 8.67 1.3 - 10.4 1.41 0.3 - 1.0
Walleye Trap net 0.56 0.2 - 0.7 4.43 0.7 - 2.8
Gill net 1.89 1.0 - 5.0 1.82 1.2 - 3.0
Yellow Bullhead Trap net 0.33 1.0 - 5.3 0.81 0.5 - 0.9
Gill net 0.67 1.0 - 6.0 1.71 0.4 - 0.7
Yellow Perch Gill net 11.67 1.5 - 13.8 0.12 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 2009 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 4 26 4 0 0 0 0 0 34
bluegill 73 340 0 0 0 0 0 0 420
brown bullhead 0 0 0 1 0 0 0 0 1
golden shiner 2 1 0 0 0 0 0 0 3
hybrid sunfish 0 7 1 0 0 0 0 0 8
largemouth bass 0 9 11 10 3 0 0 0 33
northern pike 0 0 0 1 2 10 11 1 25
pumpkinseed 3 24 1 0 0 0 0 0 28
rock bass 8 25 1 0 0 0 0 0 34
tullibee (cisco) 0 1 2 5 70 0 0 0 78
walleye 0 1 0 2 13 4 2 0 22
yellow bullhead 0 1 1 7 0 0 0 0 9
yellow perch 21 80 4 0 0 0 0 0 105


For the record, the largest River Redhorse taken in Minnesota weighed 12 lbs., 10 oz. and was caught:

    Where: Kettle River, Pine County
    When: 5/20/05
    Statistics: 28.38" length, 20" girth

Fish Stocking Activity

Fish Stocked by Species for the Last Ten Years

Year Species Size Number Pounds
2012 Walleye2 fingerlings 10,312 535.7
2010 Walleye1 fingerlings 8,079 536.0
2008 Walleye fingerlings 12,622 539.0
2006 Walleye yearlings 611 470.0
  Walleye fingerlings 210 35.0
  Walleye adults 162 27.0
2004 Walleye adults 1,025 395.2
  Walleye fingerlings 5,943 195.0

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
SHALLOW
Itasca Co., 31008400
Bluegill Sunfish   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
SHALLOW
Itasca Co., 31008400
Bluegill Sunfish All sizes        
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 06/15/2009)

Shallow Lake is a 531 acre lake near Warba, Minnesota. Shallow Lake has clear, well oxygenated water and the Secchi disk transparency of 16 feet was comparable with past surveys of the lake. The lake is characterized by a steep sided, deep basin on the western side and a shallow flat with emergent plants on the eastern side. Residential development is relatively high around most of the lake.

Yellow perch were the most common fish in the gill net sample. Perch catches have varied considerably and the 2009 perch catch was above average for Shallow Lake but within the expected range when compared to similar lakes. The size structure was poor and perch were generally too small to be of interest to anglers. Given their relative abundance and size structure, perch are likely an important prey species for northern pike and walleye in Shallow Lake.

Tullibee were the second most common fish species in the gill net sample and the catch rate was within the expected range when compared to similar lakes. The lake supports a high percentage of large tullibee as most individuals ranged from 14 to 17 inches. Tullibee are an important prey species and are often associated with the production of large predators including northern pike and walleye.

Shallow Lake continues to support a modest walleye fishery. The catch rate was near the average for Shallow Lake and similar lakes. Size structure was good, as most fish exceeded the quality size of 15 inches. Two walleye exceeding 27 inches were captured in the trap net, indicating the potential for trophy walleye production. Shallow lake is stocked regularly with walleye fingerlings. Analysis of bony structures identified 8 year classes which generally corresponded to stocked years. Growth was near the statewide average with individuals typically exceeding 14 inches by age 4. Given the size structure and catch rate, fair angling opportunities should exist for this species.

Shallow Lake has a history of supporting a low to moderate northern pike population characterized by a favorable size structure. The catch rate in 2009 was near the average for Shallow Lake and was within the expected range when compared to similar lakes. The size structure remained good, as most individuals exceeded 21 inches. Twenty-four percent of the captured fish exceeded 28 inches, indicating good angler opportunities for large individuals. Six year classes were present and recruitment appeared to be relatively consistent. Growth was fast for the first four years with individuals typically exceeding 24 inches by age 4 and average thereafter with individuals typically exceeding 28 inches by age 7.

Shallow Lake has a history of producing bluegill in relatively high abundance. In 2009, the trap net catch rate was typical for the lake and was within the expected range for similar lakes. The size structure was modest, as most fish exceeded 6 inches. Few individuals exceeded 8 inches, however. The lack of large individuals may limit angler interest in this species.

Black crappie were sampled at a rate within the expected range for the lake type and typical for Shallow Lake. The size structure was relatively poor as few individuals exceeded 8 inches. Five year classes were identified. The 2005 year class (age 4) comprised 63% of the sample, suggesting inconsistent recruitment. Inconsistent recruitment of black crappie is a common life history trait for many populations, often resulting in "boom and bust" angling cycles. Growth was average with individuals typically exceeding 8 inches by age 4.

Largemouth bass were sampled in relatively high numbers. The size structure was dominated by small fish, although two bass exceeding 18 inches were captured. Growth was near the statewide average with individuals typically exceeding 12 inches by age 4. Given the abundance of this species, good angling opportunities should exist.

Other species captured include pumpkinseed sunfish, brown bullhead, yellow bullhead, and rock bass.

Shallow Lake has a high amount of residential development surrounding it. The protection of water quality and habitat is critical in maintaining or improving fish and wildlife populations. Unfortunately, human activities often negatively impact lakes. Fertilized turf-grass lawns and failing septic systems along with the removal of shoreline and aquatic vegetation, mowing to the shore, and installing sand blanket beaches results in destabilized shorelines, uncontrolled erosion, and increased run-off, contributing excess nutrients and sediment to the lake and degrading water quality and habitat. By understanding the cumulative impacts of our actions and taking steps to avoid or minimize them, we can help insure our quality water resources can be enjoyed well into the future. A complete description of shoreline best management practices can be found in online at www.mndnr.gov.


For more information on this lake, contact:

Area Fisheries Supervisor
1201 East Hwy 2
Grand Rapids, MN 55744
Phone: (218) 327-4430
Internet: Grand Rapids Fisheries
E-Mail: GrandRapids.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 C1990 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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