Fisheries Lake Survey

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Name: Union

Nearest Town: Forada
Primary County: Douglas
Survey Date: 07/21/2010
Inventory Number: 21004100
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Public Access Information

Ownership Type Description
DNR Concrete


Lake Characteristics

Lake Area (acres): 107.31
Littoral Area (acres): 55
Maximum Depth (ft): 45
Water Clarity (ft): 13

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


Did you know? Much of Minnesota's fisheries program is reimbursed by the Federal Aid in Sport Fish Restoration Program (federal excise tax), administered by the U.S. Fish and Wildlife Service.

Fish Sampled for the 2010 Survey Year

Species

Gear Used

Number of fish per net

Average Fish Weight (lbs)

Normal Range (lbs)

Caught

Normal Range

Black Crappie Trap net 0.56 0.7 - 3.4 0.55 0.2 - 0.6
Bluegill Trap net 24.44 6.1 - 46.6 0.08 0.1 - 0.3
Gill net 3.25 N/A 0.24 N/A
Bowfin (dogfish) Trap net 0.56 0.4 - 1.3 5.10 2.9 - 4.9
Gill net 0.50 0.3 - 0.6 4.40 3.1 - 4.8
Brown Bullhead Trap net 0.11 0.4 - 2.1 1.83 0.6 - 1.1
Gill net 0.25 0.5 - 2.5 1.29 0.6 - 1.0
Green Sunfish Trap net 0.22 0.3 - 2.3 0.07 0.1 - 0.2
Hybrid Sunfish Trap net 0.56 N/A 0.27 N/A
Gill net 0.50 N/A 0.52 N/A
Largemouth Bass Trap net 1.33 0.3 - 1.3 0.41 0.2 - 0.7
Gill net 2.50 0.3 - 1.7 1.78 0.6 - 1.2
Northern Pike Trap net 0.33 N/A 1.04 N/A
Gill net 8.50 3.5 - 10.5 1.59 1.6 - 2.9
Pumpkinseed Trap net 3.89 2.0 - 8.5 0.13 0.1 - 0.2
Gill net 3.00 N/A 0.36 N/A
Walleye Trap net 0.33 0.3 - 0.7 0.41 1.1 - 3.4
Gill net 0.50 1.3 - 5.0 5.60 1.3 - 2.5
Yellow Bullhead Trap net 1.11 1.3 - 9.8 0.89 0.5 - 0.8
Gill net 17.00 1.0 - 10.5 0.95 0.4 - 0.8
Yellow Perch Trap net 1.00 0.5 - 3.3 0.19 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 2010 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 crappie 0 2 3 0 0 0 0 0 5
bluegill 205 28 0 0 0 0 0 0 233
bowfin (dogfish) 0 0 0 0 0 4 3 0 7
brown bullhead 0 0 0 1 1 0 0 0 2
green sunfish 2 0 0 0 0 0 0 0 2
hybrid sunfish 4 1 2 0 0 0 0 0 7
largemouth bass 3 9 0 6 3 0 0 0 22
northern pike 0 0 2 2 19 11 0 0 37
pumpkinseed 28 19 0 0 0 0 0 0 47
walleye 0 0 3 0 0 1 1 0 5
yellow bullhead 0 2 39 37 0 0 0 0 78
yellow perch 1 8 0 0 0 0 0 0 9


For the record, the largest Bowfin taken in Minnesota weighed 11 lbs., 4 oz. and was caught:

    Where: St. Croix River, Washington County
    When: 10/7/2008
    Statistics: 35" length, 20" girth

Fish Stocking Activity

Fish Stocked by Species for the Last Ten Years

Year Species Size Number Pounds
2011 Walleye fingerlings 465 21.0
2009 Walleye* yearlings 3,500 100.0
2005 Walleye yearlings 178 102.0
  Walleye adults 3 8.0

Privately Stocked Fish
* indicates privately stocked fish. Private stocking includes fish purchased by the DNR for stocking and fish purchased and stocked by private citizens and sporting groups.

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

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 07/21/2010)

Union (also referred to as South Union) Lake is a small, bowl-shaped basin located between Alexandria and Forada. Water quality and clarity are good. Water transparency readings typically exceed 10.0 feet during summer months. Extensive beds of submergent vegetation are common in shallow areas. Emergent vegetation is abundant around most of the shoreline. Residential development can be described as low to moderate. A small, public access is located along the northeast shoreline.

Union Lake contains a relatively simple fish community consistent with most bass-panfish fisheries found in west-central Minnesota. Anglers can expect good numbers of bluegill, largemouth bass, and northern pike. Size structures of these populations, especially bluegill and northern pike, tend to be skewed towards smaller individuals in response to slow growth. Other gamefish species present include black crappie, walleye, and yellow perch. Walleye and yellow perch numbers are very low. Walleye fingerlings have been stocked but stocking success on this basin has been poor. Consequently, walleye are now stocked only in years when surplus fish are available. Anglers are encouraged to harvest small northern pike to reduce predation on and competition with the walleye population.

Other species collected during the 2010 lake survey include bowfin (dogfish), brown and yellow bullhead, green sunfish, hybrid sunfish, and pumpkinseed. The next lake survey is scheduled for 2015.


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 C1334 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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