|Nearest Town: Northome
Primary County: Itasca
Survey Date: 06/21/2010
Inventory Number: 31091300
|Private Property||Other||User developed access on S shore off Cty Rd 31.|
|DNR||Concrete||NW shore off of State Hwy 46|
|Special and/or Experimental Fishing Regulations exist on this lake. Please refer to our online Minnesota Fishing Regulations.|
|Did you know? Spawning habitat improvements can enhance naturally reproducing populations of fish species such as walleye and northern pike.|
|Species||Number of fish per net||
Average Fish Weight (lbs)
Normal Range (lbs)
|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|
|Species||Number of fish caught in each category (inches)|
|For the record, the largest Northern Pike (Silver Phase) taken in Minnesota weighed 18 lbs., 14 oz. and was caught: |
Statistics: 42" length, 19" girth
Fish Stocked by Species for the Last Ten Years
|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.|
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
|Unrestricted||1 meal/week||1 meal/month||Do not eat|
Itasca Co., 31091300
|Northern Pike||shorter than 27"||27" or longer||Mercury|
|Walleye||shorter than 23"||23" or longer||Mercury|
|Unrestricted||1 meal/week||1 meal/month||Do not eat|
Itasca Co., 31091300
|Northern Pike||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.
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:||Lake maps can be obtained from:|
For general DNR Information, contact:
DNR Information Center
500 Lafayette Road
St. Paul, MN 55155-4040
TDD: (651) 296-6157 or (888) MINNDNR
Turn in Poachers (TIP):
Toll-free: (800) 652-9093