Fisheries Lake Survey

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Name: Mill

Nearest Town: Alexandria
Primary County: Douglas
Survey Date: 06/11/2012
Inventory Number: 21018000
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Public Access Information

Ownership Type Description
DNR Concrete


Lake Characteristics

Lake Area (acres): 450.3
Littoral Area (acres): 240
Maximum Depth (ft): 40
Water Clarity (ft): 8.8 (6.2-11.3)

Dominant Bottom Substrate: Sand (Abundant)
Abundance of Aquatic Plants: 16 Varieties Sampled
Maximum Depth of Plant Growth (ft): 9.0 (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 2012 Survey Year

Species

Gear Used

Number of fish per net

Average Fish Weight (lbs)

Normal Range (lbs)

Caught

Normal Range

Black Bullhead Gill net 1.08 0.6 - 6.8 0.48 0.5 - 1.0
Black Crappie Trap net 4.33 0.4 - 2.3 0.28 0.3 - 0.6
Gill net 6.25 0.4 - 2.7 0.21 0.3 - 0.6
Bluegill Trap net 22.42 4.4 - 49.0 0.16 0.1 - 0.2
Gill net 4.67 N/A 0.22 N/A
Bowfin (dogfish) Trap net 0.75 0.3 - 1.1 4.00 3.7 - 5.1
Gill net 0.08 0.1 - 0.4 5.77 3.1 - 4.6
Common Carp Trap net 0.67 0.2 - 1.0 5.67 3.8 - 8.7
Gill net 0.25 0.2 - 1.0 7.00 2.3 - 8.2
Hybrid Sunfish Trap net 0.67 N/A 0.64 N/A
Largemouth Bass Trap net 0.33 0.3 - 1.3 0.75 0.2 - 0.8
Gill net 0.75 0.3 - 1.4 0.59 0.5 - 1.2
Northern Pike Trap net 0.75 N/A 1.74 N/A
Gill net 10.58 2.8 - 9.0 1.90 1.6 - 2.8
Pumpkinseed Trap net 0.75 1.8 - 7.8 0.14 0.1 - 0.3
Gill net 0.17 N/A 0.18 N/A
Walleye Trap net 0.25 0.2 - 0.8 4.20 1.0 - 2.7
Gill net 7.83 3.3 - 8.8 1.51 1.2 - 2.1
White Sucker Trap net 0.08 0.2 - 1.1 3.09 1.8 - 3.0
Gill net 1.33 0.9 - 4.0 2.79 1.6 - 2.4
Yellow Bullhead Trap net 3.08 1.2 - 5.2 0.84 0.6 - 0.9
Gill net 1.92 1.2 - 10.9 0.55 0.6 - 0.9
Yellow Perch Trap net 0.75 0.6 - 3.5 0.11 0.1 - 0.2
Gill net 36.00 7.0 - 46.3 0.15 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 0 6 6 1 0 0 0 0 13
black crappie 39 65 23 0 0 0 0 0 127
bluegill 193 130 2 0 0 0 0 0 325
bowfin (dogfish) 0 0 0 0 3 4 3 0 10
common carp 0 0 0 0 2 6 3 0 11
hybrid sunfish 1 6 0 1 0 0 0 0 8
largemouth bass 0 4 7 2 0 0 0 0 13
northern pike 0 0 1 4 65 56 9 1 136
pumpkinseed 6 5 0 0 0 0 0 0 11
walleye 0 0 18 18 55 3 3 0 97
white sucker 0 0 0 0 14 3 0 0 17
yellow bullhead 2 13 25 20 0 0 0 0 60
yellow perch 124 303 14 0 0 0 0 0 441


For the record, the largest Blue Sucker taken in Minnesota weighed 14 lbs., 3 oz. and was caught:

    Where: Mississippi River near Alma, Wabasha County
    When: 2/28/87
    Statistics: 30.4" length, 20.2" girth

Fish Stocking Activity

Fish Stocked by Species for the Last Ten Years

Year Species Size Number Pounds
2013 Walleye adults 476 136.0
2012 Walleye adults 64 70.0
  Walleye fingerlings 1,452 233.0
  Walleye yearlings 1,173 180.0
2010 Walleye fingerlings 1,382 65.0
  Walleye fingerlings 5,076 431.0
  Walleye adults 75 75.0
2008 Walleye1 fingerlings 16,700 500.0
2006 Walleye1 fingerlings 6,710 500.0
2004 Walleye fry 460,702 4.3

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
MILL
Douglas Co., 21018000
Northern Pike     All sizes   Mercury
Walleye     All sizes   Mercury

General Population

LAKE NAME
County, DOWID
Species Meal Advice Contaminants
Unrestricted 1 meal/week 1 meal/month Do not eat
MILL
Douglas Co., 21018000
Northern Pike   All sizes     Mercury
Walleye   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.

Dioxin
Mercury
PCBS - Polychlorinated biphenyls
PFOS - Perfluorooctane sulfanate


Status of the Fishery (as of 06/11/2012)

Mill Lake is a 461-acre, moderately developed basin located about eight miles southwest of Alexandria in Douglas County. Maximum depth is 40.0 ft. Mean depth is 20.0 ft. Water clarity averages about 7.0 feet during summer months. Monitoring records describe a gradual increase in water clarity over the past 20 years.

The lake is fertile and supports an abundant and diverse aquatic plant community. Emergent vegetation such as hardstem bulrush is common and helps protect shorelines from erosion while also providing valuable fish and wildlife habitat. Bulrush is effective at absorbing in-lake nutrients that would otherwise fuel the growth of nuisance algae. Submergent plants growth to a depth of 12.0 feet.

Walleyes, northern pike, largemouth bass, bluegills and black crappies are moderately abundant. Walleyes captured during the 2012 survey ranged from 10.0- to 29.0-inches and averaged almost 16-inches. These 16-inch fish are part of a strong 2008 year class that should provide good angling in 2013. Northern pike captures ranged from 12.0- to 32.0-inches in length. At present, most pike are young. Due to the high proportion of young fish in the population sample, average size captured in gillnets was 20.3 inches.

Habitat conditions are well suited for sunfishes. The black crappie population supports a popular spring fishery. Survey catch rates have often exceeded normal or expected catches for similar lakes. Reproductive success and annual recruitment have proven irregular, thus age and size distributions, as well as, fishing quality can vary dependent upon loss of old fish or variable contributions of young fish to population abundance. Largemouth bass are very abundant. Older bass don't grow well, thus the lake doesn't support many bass over 15.0 inches in length. Most bluegills captured during the 2012 survey were three-year-old fish. Average size caught in 2012 was 5.8 inches, but 8.0 inch and larger bluegills are present.

Yellow perch, the preferred forage for top predators, are currently plentiful. Perch have adapted to predation by maturing earlier and at a smaller size. Rather than putting energy into maximal growth, available protein goes into reproduction. Few perch are large enough to harvest.

In summary, Mill Lake can best be described as relatively quiet, highly productive lake that retains a good amount of natural shoreline and areas of emergent vegetation. The lake has lush submergent plant growth and can become a bit green during the height of summer. Gamefishes are abundant and angler catch rates can be very good. Mill Lake offers excellent family fishing experiences and can also yield some large walleye for specialized anglers.


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 C0979 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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