Fisheries Lake Survey

printer friendly version

Name: Island

Nearest Town: Northome
Primary County: Itasca
Survey Date: 06/21/2010
Inventory Number: 31091300
Buy your walleye stamp todayPurchase a walleye stamp. Your voluntary contribution will be used to support walleye stocking.

Public Access Information

Ownership Type Description
Unknown Earthen
Private Property Other User developed access on S shore off Cty Rd 31.
DNR Concrete NW shore off of State Hwy 46


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): 3108.09
Littoral Area (acres): 1195
Maximum Depth (ft): 35
Water Clarity (ft): 10.5 (8.5-12.5)

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 2010 Survey Year

Species

Gear Used

Number of fish per net

Average Fish Weight (lbs)

Normal Range (lbs)

Caught

Normal Range

Black Crappie Trap net 0.07 0.4 - 2.3 1.15 0.3 - 0.6
Bluegill Trap net 0.33 4.4 - 49.0 0.33 0.1 - 0.2
Brown Bullhead Trap net 0.07 0.3 - 1.6 1.47 0.7 - 1.1
Northern Pike Trap net 0.33 N/A 2.19 N/A
Gill net 6.33 2.8 - 9.0 3.04 1.6 - 2.8
Pumpkinseed Trap net 0.73 1.8 - 7.8 0.21 0.1 - 0.3
Rock Bass Trap net 0.13 0.5 - 2.5 0.04 0.3 - 0.5
Gill net 1.73 0.6 - 3.9 0.33 0.3 - 0.5
Smallmouth Bass Trap net 0.07 0.1 - 0.9 0.64 0.2 - 0.5
Gill net 0.53 0.1 - 0.9 2.13 0.9 - 2.0
Tullibee (cisco) Gill net 0.40 0.8 - 6.2 0.54 0.6 - 1.4
Walleye Trap net 0.20 0.2 - 0.8 1.71 1.0 - 2.7
Gill net 5.80 3.3 - 8.8 1.88 1.2 - 2.1
White Sucker Gill net 1.20 0.9 - 4.0 2.47 1.6 - 2.4
Yellow Perch Trap net 5.27 0.6 - 3.5 0.12 0.1 - 0.2
Gill net 39.73 7.0 - 46.3 0.21 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 2010 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 0 0 1 0 0 0 0 1
bluegill 2 2 1 0 0 0 0 0 5
brown bullhead 0 0 0 1 0 0 0 0 1
northern pike 0 0 0 0 11 42 46 1 100
pumpkinseed 6 5 0 0 0 0 0 0 11
rock bass 3 24 1 0 0 0 0 0 28
smallmouth bass 0 0 1 5 3 0 0 0 9
tullibee (cisco) 0 2 2 2 0 0 0 0 6
walleye 0 2 9 27 25 27 0 0 90
white sucker 0 0 0 0 18 0 0 0 18
yellow perch 144 439 92 0 0 0 0 0 675


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
2013 Walleye fry 1,200,000 12.0
2011 Walleye fry 1,200,000 11.3
2010 Walleye fry 1,200,000 12.0
2009 Walleye fry 1,800,000 18.0
2008 Walleye fry 1,380,000 13.8
2007 Walleye fry 1,200,000 12.0
2006 Walleye fry 1,170,000 11.7
2005 Walleye fry 1,200,000 12.0

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
ISLAND
Itasca Co., 31091300
Cisco All sizes        
Northern Pike   shorter than 27" 27" or longer   Mercury
Sunfish All sizes        
Walleye   shorter than 23" 23" or longer   Mercury

General Population

LAKE NAME
County, DOWID
Species Meal Advice Contaminants
Unrestricted 1 meal/week 1 meal/month Do not eat
ISLAND
Itasca Co., 31091300
Cisco All sizes        
Northern Pike   All sizes     Mercury
Sunfish All sizes        
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 06/21/2010)

Island Lake is a class 27 lake located in the far northwestern part of Itasca County, two miles south of Northome, MN. The lake has one main public access on the northwest side and moderate shoreline development. The 2007 lake management plan indicates walleye and northern pike as the primary species of management with yellow perch as a secondary species. In 2003, a 24 to 36 inch protected slot length limit with only one northern pike over 36 inches in possession was implemented. Two years later a walleye slot length limit was applied to the lake that required all fish between 17 and 26 inches to be released and only one fish over 26 inches could be in possession.

Walleye catch rates have fluctuated from a low of 0.9/gill net in 1984 to a high of 10.1/gill net in 2006. In 2010, the walleye gill-net catch rate of 5.8 fish/net was near the management goal of 6 fish/net. The catch exceeded the lake class median of 5.5 fish/gill net. The sampled fish ranged from 8.5 to 24.0 inches and averaged 16.9 inches. The size structure goals were achieved in this assessment.

Walleye age and growth information was determined from scale, opercle, and otolith analysis. Thirteen year-classes were identified with fish from one to 14 years old present. All of the strong year classes (2002, 2005, and 2006) would have experienced multiple years of angler harvest by the time of this assessment. Walleye averaged 15.2 inches after four years of growth. Growth was similar to statewide averages through age 8. Slower growth after age 8 appears to be influenced by low sample size and older males.

Northern pike gill-net catch rates have ranged from a low of 1.1 fish/net in 1954 to a high of 11.7 fish/net in 1969. The northern pike gill-net catch was 9.2 fish/net in 2006 and declined to 6.3 fish/net in 2010, remaining near the management goal of 6.0 fish/net. The sampled fish ranged from 17.2 to 31.0 inches and had a mean length of 24.2 inches. The size structure goal of having PSD and RSD-P of 40 and 15 were almost achieved; PSD and RSD-P values were 81 and 10. Even the smallest northern pike sampled were sexually mature for both males and females. Seven year-classes were identified from cliethra and scales ranging from age 1 to age 7. Recruitment appears to be consistent. Fish estimated to be from the 2005 year class were the most common. Northern pike averaged 23.3 inches after four years of growth, which was above the statewide average of 20.5.

Yellow perch gill-net catch rates have fluctuated from a low of 15.2 fish/net in 1954 to a high of 151.8 fish/net in 1969. In the last three assessments, the gill net catch was 39.1 fish/net in 2003, 93.7 fish/net in 2006, and 39.7 fish/net in 2010. The catches have approached or exceeded the lake class 3rd quartile of 46.3 fish/gill net. The sampled yellow perch ranged from 5.2 to 12.0 and had a mean length of 7.4 inches. Age and growth information was not collected in this assessment.

Tullibee can be difficult to catch because they frequently live over deep water, an area our standard sampling gear was not designed to sample. As a result, catch rates can be highly variable. However, they are important to fish communities as a prey source for many predator species, especially northern pike and walleye. The catch rates from the last four assessments are an example of the highly variable nature of tullibee catches: the catch was 8.6 fish/net in 1997 (2nd highest for the lake), six years later, the catch was 1.7 fish/net, the catch was 11.8 fish/net in 2006 (highest on record for lake), and in 2010, the catch was 0.4 fish/net (lowest on record). The fish sampled in 2010 ranged from 8.3 to 12.7 inches and averaged 10.5 inches. Two distinct size groups in the length distribution would indicate two year classes were present.

Bluegill had never been sampled with trap nets prior to 1997, when 11.5 fish/net were sampled. Since 1997, the trap net catch rates have declined to 0.7 fish/net in 2003, increased to 4.7 fish/net in 2006, and declined to 0.3 fish/net in 2010. The sampled bluegill ranged from 3.2 to 9.3 inches. Age and growth information was not collected in this assessment.

Other species observed during the population assessment included black crappie, pumpkinseed sunfish, rock bass, smallmouth bass, and white sucker.


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 B3011 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

Tip Logo    Turn in Poachers (TIP):

    Toll-free: (800) 652-9093