Fisheries Lake Survey

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Name: Osakis

Nearest Town: Osakis
Primary County: Todd
Survey Date: 08/11/2014
Inventory Number: 77021500
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Public Access Information

Ownership Type Description
DNR Concrete South Access. Located off Central Avenue in the City of Osakis.
DNR Concrete Northwest access. Located off County Road # 10.
County Concrete East access. Located off Faraway Lane on Battle Point.
Township Gravel North Access. Located off 145th Avenue.


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): 6389.37
Littoral Area (acres): 3389.01
Maximum Depth (ft): 73
Water Clarity (ft): 3.3 (3-3.5)

Dominant Bottom Substrate: N/A
Abundance of Aquatic Plants: N/A
Maximum Depth of Plant Growth (ft): N/A


Did you know? Fisheries personnel monitor and regulate aquaculture, fishing tournaments, commercial fishing operations, aquatic plant management, and aeration.

Fish Sampled for the 2014 Survey Year

Species

Gear Used

Number of fish per net

Average Fish Weight (lbs)

Normal Range (lbs)

Caught

Normal Range

Black Bullhead Trap net 0.07 0.3 - 2.1 1.04 0.4 - 0.8
Gill net 2.25 0.5 - 4.1 1.12 0.6 - 1.0
Black Crappie Trap net 12.00 0.3 - 1.7 0.52 0.3 - 0.6
Gill net 13.92 0.2 - 1.1 0.51 0.2 - 0.5
Bluegill Trap net 3.33 3.7 - 42.9 0.21 0.1 - 0.2
Gill net 1.50 N/A 0.41 N/A
Bowfin (dogfish) Trap net 1.20 0.3 - 1.1 3.38 3.9 - 5.1
Gill net 0.25 0.1 - 0.2 3.00 3.0 - 5.2
Brown Bullhead Trap net 0.53 0.3 - 1.7 1.11 0.7 - 1.1
Gill net 5.50 0.3 - 1.6 1.01 0.7 - 1.2
Common Carp Trap net 0.27 0.2 - 1.0 5.13 3.5 - 7.4
Gill net 0.67 0.1 - 0.5 6.35 3.1 - 7.1
Hybrid Sunfish Gill net 0.08 N/A 0.65 N/A
Largemouth Bass Trap net 0.20 0.4 - 1.4 1.30 0.3 - 0.7
Gill net 0.08 0.3 - 1.2 1.23 0.6 - 1.0
Northern Pike Trap net 0.47 N/A 2.29 N/A
Gill net 4.50 3.0 - 7.9 2.37 1.7 - 2.8
Pumpkinseed Trap net 1.13 1.6 - 6.9 0.17 0.1 - 0.3
Gill net 1.00 N/A 0.31 N/A
Rock Bass Trap net 0.27 0.7 - 3.3 0.56 0.2 - 0.5
Gill net 0.83 1.0 - 6.6 0.61 0.3 - 0.5
Smallmouth Bass Gill net 0.25 0.2 - 0.9 1.44 0.9 - 1.8
Tullibee (cisco) Gill net 0.25 0.5 - 5.2 1.63 0.4 - 1.0
Walleye Trap net 0.07 0.3 - 0.9 2.16 1.0 - 2.2
Gill net 14.17 4.0 - 9.6 1.43 1.1 - 1.9
White Sucker Gill net 0.33 1.0 - 3.5 3.25 1.5 - 2.3
Yellow Bullhead Trap net 0.93 0.9 - 4.8 0.83 0.7 - 1.0
Gill net 25.67 0.6 - 6.4 0.74 0.6 - 0.9
Yellow Perch Trap net 0.20 0.7 - 3.7 0.12 0.1 - 0.2
Gill net 3.17 7.1 - 33.9 0.16 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
black bullhead 0 1 7 20 0 0 0 0 28
black crappie 11 34 299 1 0 0 0 0 345
bluegill 29 39 0 0 0 0 0 0 68
bowfin (dogfish) 0 0 0 1 5 14 1 0 21
brown bullhead 0 0 32 40 2 0 0 0 74
common carp 0 0 0 0 2 8 2 0 12
hybrid sunfish 0 1 0 0 0 0 0 0 1
largemouth bass 0 0 0 4 0 0 0 0 4
northern pike 0 0 0 1 18 31 7 4 61
pumpkinseed 14 15 0 0 0 0 0 0 29
rock bass 0 7 7 0 0 0 0 0 14
smallmouth bass 0 0 1 1 1 0 0 0 3
tullibee (cisco) 0 0 0 0 3 0 0 0 3
walleye 0 1 3 105 39 20 3 0 171
white sucker 0 0 0 0 3 1 0 0 4
yellow bullhead 0 5 261 56 0 0 0 0 322
yellow perch 10 27 3 0 0 0 0 0 40


For the record, the largest Kokanee Salmon taken in Minnesota weighed 2 lbs., 15 oz. and was caught:

    Where: Caribou Lake, Itasca County
    When: 8/6/71
    Statistics: 20" length, 11.5" girth

Fish Stocking Activity

Fish Stocked by Species for the Last Ten Years

Year Species Size Number Pounds
2014 walleye yearlings 1,284 352.0
  walleye fingerlings 6,355 599.0
  walleye adults 165 220.0
  walleye fingerlings 46,806 1,656.0
  walleye fingerlings 492 41.0
  walleye fingerlings 3,729 287.0
  walleye adults 299 236.0
  walleye1 fingerlings 8,294 319.0
  walleye fry 6,850,000 62.7
2013 Walleye fry 48,427 0.0
  Walleye fry 6,746,000 58.0
  Walleye1 fingerlings 8,789 315.0
  Walleye fry 68,306 1.0
2012 Walleye fry 6,832,000 26.3
  Walleye1 fingerlings 7,839 305.0
2011 Walleye fry 6,832,000 58.8
2010 Walleye1 fingerlings 28,285 1,416.0
  Walleye1 fingerlings 30,268 2,000.0
  Walleye1 fingerlings 7,800 300.0
  Walleye fry 500,000 4.5
  Walleye fry 6,331,482 56.4
2009 Walleye fry 6,828,881 68.4
  Walleye1 fingerlings 3,800 200.0
2008 Walleye fry 7,000,000 59.2
  Walleye1 fingerlings 4,750 190.0
2007 Walleye1 fingerlings 12,001 406.0
  Walleye fry 7,002,076 65.1
2006 Walleye fry 7,002,350 61.0
  Walleye1 fingerlings 10,000 400.0
2005 Walleye adults 4,341 4,452.0
  Walleye adults 4 10.0
  Walleye fingerlings 9,510 219.0
  Walleye fry 7,006,608 63.0
  Walleye yearlings 4,772 1,518.0
  Walleye yearlings 58 52.0
  Walleye1 fingerlings 2,279 106.0

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
OSAKIS
Todd Co., 77021500
Bluegill Sunfish   All sizes     Mercury
Northern Pike     All sizes   Mercury
Walleye     All sizes   Mercury
White Sucker   All sizes     Mercury

General Population

LAKE NAME
County, DOWID
Species Meal Advice Contaminants
Unrestricted 1 meal/week 1 meal/month Do not eat
OSAKIS
Todd Co., 77021500
Bluegill Sunfish All sizes        
Northern Pike   All sizes     Mercury
Walleye   All sizes     Mercury
White Sucker All sizes        

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 08/11/2014)

Lake Osakis (6,270 acres) is a nutrient-rich, highly productive basin located in Douglas and Todd counties. Due to high nutrient levels, water quality can be seasonally impaired with periodic algal blooms and low water clarity (< 3.5 feet). In addition, shorelines of Lake Osakis have been heavily developed, resulting in the disturbance of sensitive aquatic habitats. Landowners and recreational users are encouraged to minimize disturbance to remaining aquatic habitats. Such areas provide necessary habitat for fishes and other wildlife. Currently, Lake Osakis is not infested with zebra mussels or Eurasian watermilfoil (common aquatic invasive species). Anglers are reminded to drain boats and equipment prior to moving them between bodies of water and to adhere to other aquatic invasive species laws in an effort to keep invasive species out of Lake Osakis.

Lake Osakis supports a diverse fish community including both sport and non-game fishes. Walleye catch rates (14.2 fish/gill net) have increased relative to past surveys and are above average compared to similar lakes in Minnesota. Thirty-six percent of Walleyes captured during the 2014 survey exceeded 15.0 inches. Fourteen percent were greater than 20.0 inches in length. Average size of Walleyes was 15.6 inches and 1.4 pounds. Anglers are reminded of a 15.0-inch minimum size limit for Walleye in Lake Osakis. The regulation is intended to improve quality of the Walleye fishery.

Northern Pike proved moderately abundant (4.5 fish/gill net). Size of gill net captures ranged from 14.6 to 31.9 inches and averaged 22.2 inches. Anglers are encouraged to harvest surplus stocks of small- and moderate-sized Northern Pike (i.e., < 26.0 inches) in an effort to reduce competition and improve the fishery.

Lake Osakis supports quality bass and panfish fishing opportunities. Black Crappie catches during the 2014 survey averaged 12.0 fish/trap net. This catch rate described a very abundant population. The Black Crappie population supported a high-quality fishery. Approximately 40% of all fish surveyed exceeded 10.0 inches in length. Bluegill densities were modest in relative comparison to many other lakes in west-central Minnesota, but due to a fairly low density and fast growth, Lake Osakis has a history of producing large Bluegills. No one-pound Bluegill captures were recorded in the 2014 catch, but approximately 14% of Bluegill captures exceeded 8.0 inches. The lake supports both Largemouth Bass and Smallmouth Bass populations. A spring electrofishing catch rate of 40.0 Largemouth Bass/hour describes relatively modest bass density. Average size captured was 14.2 inches. The largest measured was 18.2 inches in total length. Smallmouth bass are less abundant and provide bonus fishing experiences. Few Yellow Perch captures during the 2014 survey were large enough to stimulate targeted harvest.

Other notable fishes present in Lake Osakis include Tullibee (Cisco), Bowfin (Dogfish), and three species of Bullhead (Brown, Yellow, Black). Lake Osakis has produced state record fish including Yellow Bullhead (3 lbs. 10oz.) and Rock Bass (2 lbs. 0 oz.).

Due to the popularity of Osakis' fisheries resources, recreational activity can be high in both open water and winter seasons. Heavy, size-specific harvest influences the size and abundance of popular sport fish populations. Anglers are encouraged to harvest the smaller, more abundant fishes. For example, harvesting small Northern Pike would likely increase growth of remaining Northern Pike and provide benefits to other fish species (e.g., Walleye).

Three public accesses are available. Battle Point Access (located in the northeast corner of the main lake basin along the north shoreline of Battle Point) includes a boat launch, fishing pier, walking trails, shore fishing sites, and a fish cleaning station. An additional public access is located in the town of Osakis along the south shoreline. This access has two launch ramps, a fishing pier, and area for picnics. The final public access is located on the western side of Lake Osakis. Care should be taken when launching large boats on any of Lake Osakis' accesses, as they can be shallow and hazardous during low water periods. Additionally, caution should be taken when navigating near Moon Bar (southwest of Battle Point) to avoid large rocks (some are marked with hazard buoys).


For more information on this lake, contact:

Area Fisheries Supervisor
23070 North Lakeshore Dr
Glenwood, MN 56334
Phone: (320) 634-4573
Internet: Glenwood Fisheries
E-Mail: Glenwood.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 B0160 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

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    Toll-free: (800) 652-9093