Fisheries Lake Survey

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Name: Hogback (Twin)

Nearest Town: Isabella
Primary County: Lake
Survey Date: 06/20/2011
Inventory Number: 38005700

Public Access Information

Ownership Type Description
US Forest Service Other
US Forest Service Pier Fishing pier at picnic area on north basin- ADA accessible.
US Forest Service Gravel Gravel boat ramp off of USFS Rd #172 on the north shore of the lake.

Lake Characteristics

Lake Area (acres): 40.18
Littoral Area (acres): 24.1
Maximum Depth (ft): 43
Water Clarity (ft): 15.1 (13.5-18)

Dominant Bottom Substrate: Muck (Abundant)
Abundance of Aquatic Plants: 21 Varieties Sampled
Maximum Depth of Plant Growth (ft): 5.9 (0-12)

Did you know? There are 15,000 miles of fishable streams in Minnesota, including 2,600 miles of trout streams.

Fish Sampled for the 2011 Survey Year


Gear Used

Number of fish per net

Average Fish Weight (lbs)

Normal Range (lbs)


Normal Range

Creek Chub Trap net 0.08 N/A 0.39 N/A
Rainbow Trout Trap net 0.92 N/A 0.55 N/A
Gill net 10.50 N/A 0.74 N/A
Splake Trap net 2.83 N/A 0.46 N/A
Gill net 10.00 N/A 0.26 N/A
Yellow Perch Gill net 0.50 1.3 - 10.3 0.24 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 2011 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
creek chub 0 0 1 0 0 0 0 0 1
rainbow trout 0 0 28 0 3 1 0 0 32
splake 2 36 9 2 3 1 0 0 54
yellow perch 0 1 0 0 0 0 0 0 1

For the record, the largest Rock Bass (tie) taken in Minnesota weighed 2 lbs. and was caught:

    Where: Lake Winnibigoshish, Cass County
    When: 5/10/98
    Statistics: 12.6" length, 12.4" girth

Fish Stocking Activity

Fish Stocked by Species for the Last Ten Years

Year Species Size Number Pounds
2015 Rainbow Trout yearlings 1,000 322.6
  Splake fingerlings 3,984 80.0
2014 rainbow trout yearlings 999 356.8
  splake fingerlings 3,955 94.7
2013 Rainbow Trout yearlings 1,001 294.0
  Splake fingerlings 3,507 87.0
2012 Rainbow Trout yearlings 1,002 327.4
  Splake fingerlings 4,011 122.6
2011 Rainbow Trout yearlings 1,013 245.3
  Splake fingerlings 3,995 145.3
2010 Rainbow Trout yearlings 1,080 90.0
  Splake fingerlings 4,008 113.9
2009 Rainbow Trout yearlings 1,999 772.0
  Splake fingerlings 3,083 95.8
2008 Rainbow Trout yearlings 2,002 669.0
  Splake fingerlings 2,997 89.2
2007 Rainbow Trout yearlings 1,999 714.0
  Splake fingerlings 3,989 150.5
2006 Rainbow Trout yearlings 2,000 793.7
  Splake fingerlings 2,989 89.6

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 guidelines 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

County, DOWID
Species Meal Advice Contaminants
Unrestricted 1 meal/week 1 meal/month Do not eat
Lake Co., 38005700
Rainbow Trout All sizes        
Splake   All sizes     Mercury

General Population

County, DOWID
Species Meal Advice Contaminants
Unrestricted 1 meal/week 1 meal/month Do not eat
Lake Co., 38005700
Rainbow Trout All sizes        
Splake   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.

PCBS - Polychlorinated biphenyls
PFOS - Perfluorooctane sulfanate

Status of the Fishery (as of 06/20/2011)

Hogback Lake is 40 acres with 60% littoral area, having a maximum depth of 43 feet. Located 12.2 miles east of Isabella, MN on USFS Road #172 (Dumbbell Lake Road), there are three drive-in campsites, one remote campsite (water access), an outhouse, a back-in gravel ramp access to the lake and a barrier-free fishing pier. Anglers can also fish from shore on Hogback Lake at various places along the hiking trail, on the north and east sides of the lake. Designated Stream Trout Lake signs are posted near each access point on the north side of the lake.

Hogback Lake is one of the more popular managed stream trout lakes in the Finland Management Area and gets high fishing pressure in the summer and winter angling seasons. Splake fingerlings are stocked annually in the fall and rainbow trout yearlings are stocked annually in the spring.

The splake numbers sampled in Hogback Lake were average for the Finland Area and similar to catches in previous investigations. The average length of the catch was 8.9 inches (0.4 pound); the largest splake sampled was 22.7 inches (4 pounds). Sixty-seven percent of the splake sampled in 2011 were yearlings, stocked as fingerlings in the fall of 2010, which brought down the average size of the fish in this report.

The rainbow trout numbers sampled in 2011 were above average for the Finland Management Area. The average length of rainbow trout in the catch was 11 inches (0.7 pound), the largest rainbow trout 20.3 inches (3.7 pounds). More than 50% of the rainbow trout sampled were yearlings stocked in the spring of 2011, which brought down the average size of the fish in this report. Rainbow trout populations are difficult to assess with any sampling gear, many different methods have been tried to attain a larger sample without much success. Angling for rainbow trout is often better for the public in Hogback Lake than population assessment catch rates would indicate.

One yellow perch was collected in the 2011 lake survey, the first time yellow perch were sampled in Hogback Lake since the 2002 lake rehabilitation project. Yellow perch are a problem in managed stream trout lakes, out-competing the stocked fish for food and negatively affecting trout survival and growth

For more information on this lake, contact:

Area Fisheries Supervisor
PO Box 546
6686 Hwy 1
Finland, MN 55603
Phone: (218) 353-8840
Internet: Finland 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 C0402,C2170 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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    Toll-free: (800) 652-9093