Fisheries Lake Survey

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Name: Cedar

Nearest Town: New Prague
Primary County: Scott
Survey Date: 07/28/2008
Inventory Number: 70009100
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Public Access Information

Ownership Type Description
DNR Concrete
DNR Concrete


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): 793.42
Littoral Area (acres): 779.5
Maximum Depth (ft): 13
Water Clarity (ft): 1.6 (1-2.1)

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


Did you know? Fishing piers are installed on lakes to provide opportunities for shore fishing.

Fish Sampled for the 2008 Survey Year

Species

Gear Used

Number of fish per net

Average Fish Weight (lbs)

Normal Range (lbs)

Caught

Normal Range

Black Bullhead Trap net 0.73 1.3 - 78.1 1.16 0.2 - 0.6
Gill net 0.29 4.6 - 83.0 0.69 0.2 - 0.6
Black Crappie Trap net 30.18 1.0 - 12.3 0.17 0.2 - 0.5
Gill net 123.43 0.8 - 11.1 0.15 0.2 - 0.4
Bluegill Trap net 160.00 1.0 - 14.9 0.23 0.2 - 0.4
Gill net 40.86 N/A 0.24 N/A
Brown Bullhead Trap net 0.36 0.4 - 9.8 1.29 0.4 - 0.9
Common Carp Trap net 0.82 0.7 - 5.1 11.05 2.3 - 5.6
Golden Shiner Trap net 0.18 0.2 - 1.0 0.25 0.1 - 0.1
Gill net 1.00 0.1 - 0.7 0.29 0.1 - 0.2
Hybrid Sunfish Trap net 0.73 N/A 0.28 N/A
Gill net 0.14 N/A 0.29 N/A
Largemouth Bass Trap net 0.27 0.1 - 0.8 3.13 0.4 - 1.5
Northern Pike Trap net 0.09 N/A 10.14 N/A
Pumpkinseed Trap net 13.09 0.4 - 4.5 0.23 0.1 - 0.3
Gill net 1.14 N/A 0.28 N/A
Tiger Muskellunge Trap net 0.18 N/A 14.06 N/A
Walleye Trap net 0.27 0.3 - 1.7 2.49 0.9 - 2.4
Gill net 0.14 3.2 - 15.3 5.87 0.9 - 1.9
White Sucker Trap net 0.09 0.3 - 1.3 4.01 1.3 - 2.6
Gill net 1.71 0.8 - 5.9 1.85 1.4 - 2.2
Yellow Bullhead Trap net 8.45 0.5 - 4.1 0.90 0.4 - 0.8
Gill net 15.71 0.3 - 3.6 0.84 0.5 - 0.9
Yellow Perch Gill net 4.00 3.0 - 22.5 0.26 0.1 - 0.4
Normal Ranges represent typical catches for lakes with similar physical and chemical characteristics.


Length of Selected Species (Trapnet, Gillnet) Sampled for the 2008 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 2 6 0 0 0 0 10
black crappie 9 1180 0 0 0 0 0 0 1196
bluegill 79 1961 0 0 0 0 0 0 2046
brown bullhead 0 0 0 4 0 0 0 0 4
common carp 0 0 0 0 0 0 7 2 9
golden shiner 0 8 1 0 0 0 0 0 9
hybrid sunfish 0 9 0 0 0 0 0 0 9
largemouth bass 1 0 0 0 1 1 0 0 3
northern pike 0 0 0 0 0 0 0 1 1
pumpkinseed 30 121 0 0 0 0 0 0 152
tiger muskellunge 0 0 0 0 0 0 0 2 2
walleye 0 2 0 0 0 0 2 0 4
white sucker 0 0 0 3 9 1 0 0 13
yellow bullhead 1 8 116 73 0 0 0 0 203
yellow perch 0 25 1 0 0 0 0 0 28


For the record, the largest Bluegill taken in Minnesota weighed 2 lbs., 13 oz. and was caught:

    Where: Alice Lake, Hubbard County
    When: 1948

Fish Stocking Activity

Fish Stocked by Species for the Last Ten Years

Year Species Size Number Pounds
2013 Walleye fry 780,000 8.0
2012 Tiger Muskellunge fingerlings 780 239.3
  Walleye fry 780,000 7.6
2011 Walleye fry 780,000 7.6
2010 Tiger Muskellunge* fingerlings 780 229.4
  Walleye* yearlings 670 67.0
2009 Walleye fingerlings 26,454 1,320.0
2008 Tiger Muskellunge* fingerlings 1,000 253.8
2007 Walleye* fingerlings 1,011 60.0
  Walleye* fingerlings 10,383 418.7
  Walleye* fingerlings 14,155 1,080.5
2005 Tiger Muskellunge* fingerlings 1,000 294.1
  Walleye* fingerlings 36,127 1,559.4

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

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
CEDAR
Scott Co., 70009100
Bluegill Sunfish All sizes        
Bullhead   All sizes     Mercury
Crappie   All sizes     Mercury
Walleye   All sizes     Mercury
White Sucker All sizes        
Yellow Perch All sizes        

General Population

LAKE NAME
County, DOWID
Species Meal Advice Contaminants
Unrestricted 1 meal/week 1 meal/month Do not eat
CEDAR
Scott Co., 70009100
Bluegill Sunfish All sizes        
Bullhead All sizes        
Crappie All sizes        
Walleye   All sizes     Mercury
White Sucker All sizes        
Yellow Perch 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 07/28/2008)

Cedar Lake is a shallow, productive, 780-acre lake located north of New Prague in south-central Scott County. Stabilized water levels and winter aeration have enabled fisheries staff to manage Cedar as a quality sport fishery. The lake is primarily managed for bluegill and walleye and secondarily for tiger muskellunge, although the sportfish community also includes black crappie, largemouth bass, northern pike, and yellow perch. A population assessment, consisting of gill nets and trap nets, was conducted on Cedar Lake in 2008 to characterize the fish community.

Bluegill were the most abundant fish sampled. One hundred sixty per trap net were collected which is considered high for similar lakes across the state. Trap net catch was the highest observed in the past 5 population assessments (mean = 75.3 per trap net, 1995-2005). Mean length and weight of bluegill were 6.7 inches and 0.22 pounds, with the largest reaching 8.3 inches. Ninety-six percent were 6 inches or longer but only 14% were 7 inches or longer. Ages 2 through 6 were represented in the sample, 72% were age 4 and 19% were age 5. Compared to other similar lakes in the West Metro Area, bluegill growth was faster than average through age 4, then slowed for older ages.

One walleye was sampled in gill nets (0.1 per net) and 3 in trap nets (0.3 per net). Walleye abundance is considerably lower than past assessments, as average walleye catch for the previous 5 surveys has been 15.8 per gill net. An explanation for low walleye abundance in 2008 is the fact that a summerkill event occurred during the summer of 2007 where water temperatures and dissolved oxygen levels reached lethal levels for walleye in this shallow lake. An investigation by fisheries staff revealed numerous dead walleye ranging from approximately 24-28 inches in length. Of the 4 walleye collected during the 2008 assessment, 2 were 26 inches and 2 were 8 inches (from the 2007 stocking). Walleye fingerlings are stocked at a rate of 2 pounds per acre in odd-numbered years and it appears some fish from the 2007 stocking survived.

The summer netting in this survey was not designed to assess tiger muskellunge, however, two were collected in trap nets (38.2, 39.6 inches). Cedar Lake has been stocked with either tiger muskellunge fry or fingerlings in the past, the most recent stocking being 1000 fingerlings in 2008.

Black crappie were highly abundant in both gill (123.4 per net) and trap nets (30.2 per net). Historically black crappie abundance has been high in Cedar Lake as the average catches for the previous 5 assessments have been 119.2 per gill net and 36.5 per trap net. Average length and weight of black crappie in gill nets was 6.5 inches and 0.17 pounds, the largest measured 7.4 inches. Ninety-three percent were between 6 and 7 inches. All black crappie sampled were from the 2005 year class (age 3). Growth was considerably slower compared to other similar lakes in the West Metro Area. A moderate black crappie die-off was reported on 6/10/08. The timing, species seen, and mortality pattern seemed consistent with a natural columnaris bacterial kill (or similar natural bacterial-caused kill). This die-off made seemingly no dent in a dense crappie population.

Passive sampling gears, such as trap nets and gill nets, are not effective methods for collecting largemouth bass, so the data presented for this species is not indicative of relative abundance. Electrofishing is the typical method for largemouth bass assessments but was not conducted during this survey. That said, only 3 largemouth bass were collected during the 2008 assessment measuring 21.1, 19.3, and 5.8 inches.

Yellow perch abundance was moderately low (4.0 per gill net) and lower than the previous 6 assessments. Yellow perch numbers have been declining in assessments since 1995 when 186.5 per gill net were observed. Average length and weight were 8.3 inches 0.25 pounds, with the longest measuring 9.1 inches. Eighty-nine percent of yellow perch were age 4; the remaining 11% were age 5.

Cedar Lake has typically had a low-density northern pike population averaging 1.0 per gill net and 0.3 per trap net. In the 2008 assessment, only one northern pike (36.4 inches) was captured and it was in a trap net. Catch-per-unit-effort (0.1 per trap net) was the lowest it has been in the past 4 assessments (1995-2008).

Pumpkinseed were captured in high abundance relative to other class 41 lakes in the state. An average of 13.1 per trap net were observed.

Other species collected in low abundance were black bullhead, brown bullhead, common carp, golden shiner, hybrid sunfish, white sucker, and yellow bullhead.


For more information on this lake, contact:

Area Fisheries Supervisor
7050 E Hwy 101, Suite 100
Shakopee, MN 55379
Phone: (952) 496-4141
Internet: West Metro Fisheries
E-Mail: MetroWest.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 C0798 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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