Fisheries Lake Survey

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Name: Martha

Nearest Town: Hanover
Primary County: Wright
Survey Date: 06/12/2006
Inventory Number: 86000900

Public Access Information

Ownership Type Description
DNR Concrete Public Access on south side of lake.


Lake Characteristics

Lake Area (acres): 93.79
Littoral Area (acres): 72
Maximum Depth (ft): 22
Water Clarity (ft): 6.5

Dominant Bottom Substrate: Sand (Abundant)
Abundance of Aquatic Plants: 12 Varieties Sampled
Maximum Depth of Plant Growth (ft): 9


Did you know? Minnesota has 11,482 lakes 10 acres or larger, of which 5,483 are fishing lakes. Excluding Lake Superior, the state has 3.8 million acres of fishing water. Minnesota's portion of Lake Superior is 1.4 million acres.

Fish Sampled for the 2006 Survey Year

Species

Gear Used

Number of fish per net

Average Fish Weight (lbs)

Normal Range (lbs)

Caught

Normal Range

Black Bullhead Trap net 0.17 1.3 - 26.0 1.32 0.2 - 0.5
Black Crappie Trap net 3.67 1.8 - 18.1 0.23 0.2 - 0.3
Gill net 2.00 1.9 - 18.0 0.16 0.1 - 0.3
Bluegill Trap net 74.00 6.5 - 59.6 0.13 0.1 - 0.2
Gill net 4.00 N/A 0.10 N/A
Brown Bullhead Trap net 0.67 0.5 - 5.4 1.20 0.4 - 0.7
Gill net 1.33 0.7 - 6.2 1.06 0.2 - 0.6
Hybrid Sunfish Trap net 9.00 N/A 0.19 N/A
Gill net 4.67 N/A 0.13 N/A
Largemouth Bass Trap net 1.83 0.3 - 0.8 1.18 0.2 - 1.1
Northern Pike Trap net 0.17 N/A 6.62 N/A
Gill net 14.33 2.5 - 7.9 4.26 1.8 - 3.3
Pumpkinseed Trap net 13.67 0.8 - 5.3 0.19 0.1 - 0.2
Gill net 5.00 N/A 0.12 N/A
Yellow Bullhead Trap net 5.50 0.8 - 5.0 1.07 0.4 - 0.7
Gill net 0.67 1.0 - 6.9 0.88 0.4 - 0.7
Normal Ranges represent typical catches for lakes with similar physical and chemical characteristics.


Length of Selected Species Sampled for the 2006 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 0 0 1 0 0 0 0 1
black crappie 1 25 2 0 0 0 0 0 28
bluegill 307 144 0 0 0 0 0 0 456
brown bullhead 0 0 1 7 0 0 0 0 8
hybrid sunfish 25 43 0 0 0 0 0 0 68
largemouth bass 2 3 3 1 2 0 0 0 11
northern pike 0 0 0 1 1 11 22 9 44
pumpkinseed 31 66 0 0 0 0 0 0 97
yellow bullhead 0 0 18 17 0 0 0 0 35


For the record, the largest Longnose Gar taken in Minnesota weighed 16 lbs., 12 oz. and was caught:

    Where: St. Croix River, Prescott
    When: 5/4/82
    Statistics: 53" length, 16.5" girth

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 06/12/2006)

Lake Martha is a 97-acre lake located two miles southwest of Hanover in Wright County. Seventy-four percent of the lake is littoral with 1.5 miles of shoreline. Lake Martha has a maximum depth of 25 feet and has one state owned public access located along the south shore. The last lake survey was conducted in 1996 with previous sampling conducted in 1961, 1978, 1980, 1986, and 1991.

With water quality improving and no winter kill since 1978-79, the fishery in Lake Martha has changed from being dominated by black bullheads and crappies to that of northern pike, bluegill and largemouth bass.

Largemouth bass were sampled by electrofishing on May 4, 2006. A total of 73 largemouth bass were sampled for a catch rate of nearly 71 fish/hr, which is higher than the average of 59 fish/hr for Montrose Area lakes. Largemouth bass sampled ranged from 5 to 20 inches with an average length of 13.7. Of the catchable size bass (greater than 8 inches), nearly 70 percent were greater than 12 inches. Growth rates of largemouth bass were similar to calculated statewide averages. The oldest largemouth sampled was 12 years old and 20 inches long.

Northern pike were sampled at a rate of 14.3/gill net, which is above the range of expected values for lakes similar to Martha and similar to the last three surveys. Northern pike ranged in length from 14 - 34 inches. Estimated growth rates were similar to those calculated from statewide data. Based on this high level of abundance, Lake Martha should provide angling opportunities for above average size northern pike.

Bluegill were caught at a rate of 74/trap net, nearly twice the rate observed in 1996. The average length of bluegill caught was 5.7 inches, and the largest bluegill sampled was slight over eight inches. Growth rates of bluegill were slower than statewide averages, reaching on average only seven inches by age nine.

The catch rate of black crappie (3.7/trap net) was identical to that of 1996. Black crappie caught in trap nets set in 2006 ranged in size from 6 - 11 inches with an average of 7.5 inches. Growth rates of black crappie were slower than statewide averages taking ten years to attain a length of eight inches.


For more information on this lake, contact:

Area Fisheries Supervisor
7372 State Hwy 25 SW
Montrose, MN 55363
Phone: (763) 675-3301
Internet: Montrose Fisheries
E-Mail: Montrose.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 C1214 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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