Fisheries Lake Survey

printer friendly version

Name: Wolf

Nearest Town: Tamarack
Primary County: Aitkin
Survey Date: 08/06/2012
Inventory Number: 01001900

Public Access Information

Ownership Type Description
DNR Earthen


Lake Characteristics

Lake Area (acres): 173.43
Littoral Area (acres): 161
Maximum Depth (ft): 31
Water Clarity (ft): 1.5

Dominant Bottom Substrate: Muck and Silt (Abundant)
Abundance of Aquatic Plants: 17 Varieties Sampled
Maximum Depth of Plant Growth (ft): 4


Did you know? Minnesota waters support 153 species of fish.

Fish Sampled for the 2012 Survey Year

Species

Gear Used

Number of fish per net

Average Fish Weight (lbs)

Normal Range (lbs)

Caught

Normal Range

Black Bullhead Trap net 1.22 1.1 - 17.4 0.34 0.2 - 0.6
Gill net 90.33 1.9 - 57.5 0.17 0.2 - 0.6
Black Crappie Trap net 2.89 0.8 - 6.5 0.25 0.2 - 0.6
Gill net 8.67 1.0 - 7.3 0.42 0.2 - 0.4
Bluegill Trap net 0.44 2.5 - 25.0 0.11 0.1 - 0.5
Brown Bullhead Trap net 0.56 1.5 - 9.8 0.40 0.4 - 0.9
Gill net 2.00 1.5 - 9.9 0.71 0.3 - 0.8
Golden Shiner Gill net 0.33 0.5 - 2.3 0.12 0.1 - 0.1
Northern Pike Trap net 1.89 N/A 1.88 N/A
Gill net 9.00 4.6 - 11.6 1.23 1.5 - 2.6
White Sucker Gill net 0.33 1.0 - 5.5 1.14 1.6 - 2.3
Yellow Perch Trap net 0.78 0.8 - 4.5 0.36 0.1 - 0.4
Gill net 4.67 8.0 - 40.3 0.41 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 2012 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 bullhead 148 115 12 1 0 0 0 0 282
black crappie 14 19 19 0 0 0 0 0 52
bluegill 4 0 0 0 0 0 0 0 4
brown bullhead 3 0 6 2 0 0 0 0 11
golden shiner 0 1 0 0 0 0 0 0 1
northern pike 0 0 1 23 8 4 6 0 44
white sucker 0 0 0 1 0 0 0 0 1
yellow perch 0 9 12 0 0 0 0 0 21


For the record, the largest Black Crappie taken in Minnesota weighed 5 lbs. and was caught:

    Where: Vermillion River, Dakota County
    When: 1940
    Statistics: 21" length

Fish Consumption Guidelines

No fish consumption guidelines are available for this lake. For more information, see the "Fish Consumption Advice" pages at the Minnesota Department of Health.


Status of the Fishery (as of 08/06/2012)

Wolf Lake is located along the Continental Divide between the Mississippi River and Lake Superior watersheds and is entirely within Savanna Portage State Park in eastern Aitkin County. A state park permit is required to access the lake. It is the only lake in the Saint Louis River drainage surveyed by Aitkin area fisheries staff. The shoreline is completely undeveloped and the land adjacent to the lake is primarily a mix of wetlands and lowland spruce forest. Most of the lake is shallow, less than ten feet deep, except for one hole that reaches a maximum of 31 feet. Low winter oxygen conditions have occurred in past winters resulting in fish kills, but apparently not in recent years.

The fish community is relatively simple with ten species observed during the 2012 survey, which included standard survey nets and additional sampling for non-game fish. The most popular game fishes to target are northern pike and black crappie. Northern pike, which have reestablished a naturally reproducing population since being stocked in 1997 and 1998 due to low abundance, have a poor size structure with most fish less than 24 inches long. Research suggests that production of large predator biomass is relatively low and harvest of only a few large pike from a lake of this size can greatly impact the population. Anglers are encouraged to release larger pike and keep the smaller fish for a meal. Recycling the quality sized fish is also the best way to ensure a quality sized fish in your next trip.

Black crappie have also become established since being introduced to the lake in 1995. They are naturally a reproducing population with a good size structure. The 2012 catch of 8.7 per gill net was above the normal range for similar lakes. Size in standard survey gear ranged from 4.5 to 11.5 inches and averaged 7.6 inches with 29% greater than 10 inches.

Yellow perch may also provide some angling opportunities although their abundance is below the normal range for similar lakes. Size of fish was good with an average of 9.1 inches. Other fish species sampled, in 2012, include bluegill, brown bullhead, golden shiner, Iowa darter, tadpole madtom, and white sucker.


For more information on this lake, contact:

Area Fisheries Supervisor
PO Box 138
1200 Minnesota Ave S
Aitkin, MN 56431
Phone: (218) 927-7503
Internet: Aitkin Fisheries
E-Mail: Aitkin.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 C2038 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