Fisheries Lake Survey

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Name: Slip

Nearest Town: Lutsen
Primary County: Cook
Survey Date: 08/26/2014
Inventory Number: 16036200

Public Access Information

Ownership Type Description
US Forest Service Carry-In 0.75 mi NW on USFS 1254 from USFS 340 (Clara Lake Rd.), then 0.2 mi S along portage trail from Fleck Lake to N shore of Slip Lake.

Lake Characteristics

Lake Area (acres): 20.17
Littoral Area (acres): 20.07
Maximum Depth (ft): 18
Water Clarity (ft): 7

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 2014 Survey Year


Gear Used

Number of fish per net

Average Fish Weight (lbs)

Normal Range (lbs)


Normal Range

Muskellunge Gill net 0.50 3.0 - 3.7 3.77 1.5 - 3.6
Northern Pike Gill net 0.50 3.9 - 9.4 1.17 1.2 - 2.4
Smallmouth Bass Gill net 3.50 0.4 - 1.7 1.15 0.4 - 2.0
Walleye Gill net 3.00 1.0 - 7.2 1.25 0.8 - 2.4
White Sucker Gill net 20.50 2.6 - 17.5 1.38 0.8 - 2.3
Yellow Perch Gill net 9.50 2.0 - 23.0 0.14 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 2014 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
muskellunge 0 0 0 0 0 1 0 0 1
northern pike 0 0 0 0 1 0 0 0 1
smallmouth bass 0 2 1 3 1 0 0 0 7
walleye 0 1 1 2 1 1 0 0 6
white sucker 0 2 2 24 13 0 0 0 41
yellow perch 5 13 1 0 0 0 0 0 19

For the record, the largest Flathead Catfish taken in Minnesota weighed 70 lbs. and was caught:

    Where: St. Croix River
    When: 1970

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 08/26/2014)

Slip Lake is one of a chain of small lakes lying on the Poplar River below Crescent Lake and above Rice Lake. The lake was last surveyed in 1976, when it was found to support walleye, northern pike, yellow perch, and white sucker. Since 1976 smallmouth bass and muskellunge have become established in the upper Poplar River watershed. This assessment was scheduled in the 2012 lake management plan to update information available on the fish community in Slip Lake, and to determine whether it still supported adequate walleye and northern pike populations.

The 2014 assessment collected muskellunge, northern pike, smallmouth bass, walleye, white sucker, and yellow perch in gill nets, and pumpkinseed sunfish and yellow perch in minnow traps (no fish were taken in minnow traps used in 1976). Too few net sets were made in 1976 and 2014 to allow comparisons between catches; however, it was clear that despite the added presence of muskellunge and smallmouth bass, all major species collected in 1976 were still present in 2014.

Slip Lake appeared to support adequate numbers (and sizes) of walleye in 2014. The walleye gill net catch was within the normal range for a lake of this class, and walleye taken in gill nets ranged in length from 8.2 to 21.8 inches. Five year classes, all naturally produced, were included in the catch, indicating consistent reproductive success or constant steady replenishment from populations upstream in the watershed.

Neither northern pike or muskellunge appeared to have been abundant. Catches consisted of a single fish of each species. Muskellunge in all lakes in this watershed are entirely self-sustained. They were originally introduced in Crescent Lake in the late 1970s, but have not been stocked since. Muskellunge in this system are all descendants of Shoepack-strain fish, and so have limited trophy potential. No muskellunge larger than 45 inches have ever been sampled or reported in any lake in this watershed.

The smallmouth bass gill net catch was high for a lake of this class. Fish ranged in length from 7.7 to 15.4 inches, with most over 12 inches. Growth of young bass appeared to have been about average for this area; fish reached a mean length of 5.8 inches by the end of their second year, compared to an area average of 5.2 inches.

Enough yellow perch and small white sucker were present in 2014 to provide adequate forage for walleye, northern pike, and muskellunge. Most of the yellow perch collected were too small to have been of interest to anglers. No adult pumpkinseed sunfish were collected, but their presence was indicated by the capture of 24 young-of-year fish in minnow traps.

For more information on this lake, contact:

Area Fisheries Supervisor
1356 Hwy 61 E
Grand Marais, MN 55604
Phone: (218) 387-3056
Internet: Grand Marais Fisheries

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 C5007 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

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