manson lake · 3/3/2019 · conduct creel surveys. a creel survey is an assessment tool used to...

WISCONSIN DEPARTMENT OF NATURAL RESOURCES CREEL SURVEY REPORT

MANSON LAKE ONEIDA COUNTY

2018-19

Treaty Fisheries Publication

Compiled by Jeff Blonski & Jason Halverson

Treaty Fisheries Technicians

CONTENTS INTRODUCTION ................................................................................................................. 1 GENERAL LAKE INFORMATION .................................................................................... 2 Location ........................................................................................................................... 2 Physical Characteristics ................................................................................................... 2 Seasons Surveyed ............................................................................................................. 2 Weather ............................................................................................................................ 2 Fishing Regulations ......................................................................................................... 2 SPECIES CATCH AND HARVEST INFORMATION .................................................... 2 CREEL SURVEY RESULTS AND DISCUSSION ......................................................... 3 Survey Logistics ............................................................................................................... 3 General Angler Information ............................................................................................. 3 RESULTS BY SPECIES .................................................................................................... 3 ACKNOWLEDGMENTS .................................................................................................... 4

SUMMARY TABLES Table 1. Sportfishing effort summary ............................................................................... 5 Table 2. Creel survey synopses ....................................................................................... 6 SPECIES CATCH AND HARVEST FIGURES Gamefish Figure 1. Walleye ............................................................................................................. 7 Figure 2. Northern Pike .................................................................................................... 8 Figure 3. Muskellunge ..................................................................................................... 9 Figure 4. Smallmouth Bass .............................................................................................. 10 Figure 5. Largemouth Bass .............................................................................................. 11 Panfish Figure 6. Yellow Perch .................................................................................................... 12 Figure 7. Bluegill ............................................................................................................. 13 Figure 8. Black Crappie ................................................................................................... 14 Figure 9. Pumpkinseed ..................................................................................................... 15 Figure 10. Rock Bass ....................................................................................................... 16 Cover Art: Steve Hilt, Portland, OR Fish Graphics: Virgil Beck, Stevens Point, WI

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INTRODUCTION Fish populations can fluctuate due to natural forces like weather, predation or competition; management actions like stocking, regulations or habitat improvement; habitat loss and harvest impacts. Wisconsin Department of Natural Resources fisheries crews regularly conduct fishery surveys on lakes and reservoirs to gather the information needed to monitor changes, identify concerns, evaluate past management actions, and to prescribe fishery management strategies. Netting and electrofishing surveys are used to gather data on the status of fish populations and communities, measuring such parameters as species composition, population size, reproductive success, size and age distribution and growth rates. The other key component of the fishery that we often need to measure is harvest. On many lakes in the Ceded Territory of northern Wisconsin, harvest of fish is divided between sport anglers and the six Chippewa tribes who harvest fish under rights granted by federal treaties. The tribes harvest fish mostly using a highly efficient method, spearing, during a relatively short time period in the spring. Every fish in the spear harvest is counted – a complete “census” of the harvest. We also measure the sport angler harvest to assess its impact on the fishery. However, it would be highly impractical and very costly to conduct a complete census of every angler who fishes on a lake. Therefore, we conduct creel surveys. A creel survey is an assessment tool used to sample the fishing activities of anglers on a body of water and make projections, or estimates, of harvest and other fishery parameters. Creel survey clerks work on randomly-selected days and shifts, forty

hours per week. The survey is conducted during the open season for gamefish from the first Saturday in May through the first Sunday in March. Creel surveys are not conducted in November when fishing effort is low and ice conditions are often unsafe. The survey is run during daylight hours, and shift times change from month to month as day length changes. Creel survey clerks travel their lakes using a boat or snowmobile to count the number of anglers at predetermined times, and to interview anglers who have completed their fishing trip. Data is collected on what species they fished for, catch, harvest, lengths of fish harvested, marks (fin clips or tags), and hours of fishing effort. Collecting completed-trip data provides the most accurate assessment of angling activities, and it avoids the need to disturb anglers while they are fishing. A computer program is used to estimate catch and harvest of each species, catch and harvest rates, and fishing effort by month, as well as for the year in total. Keep in mind that these are estimates based on the best information available, and not a complete accounting of effort, catch, and harvest. Accurate estimates require that we sample a sufficient and representative portion of the angling activity on a lake. The accuracy of creel survey results depends on good cooperation and truthful responses by anglers when a creel clerk interviews them. You may have encountered a DNR creel survey clerk on a recent fishing trip. We appreciate your cooperation during an interview. The survey only takes a few minutes of your time, and it gives the Department valuable information needed for management of the fishery.

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This report provides estimates of: 1. Overall fishing effort (pressure) 2. Fishing effort directed at each species 3. Numbers of fish caught and harvested 4. Catch and harvest rates Also included are a physical description of Manson Lake; discussion of results of the survey; and detailed summaries by species of fishing effort, catch and harvest. GENERAL LAKE INFORMATION

Location Manson Lake is located in Oneida County in the town of Woodboro. Physical Characteristics Manson Lake is a 236-acre drainage lake with a maximum depth of 54 feet. Littoral substrate consists primarily of sand, with rubble, boulders, gravel and some muck present. Manson Lake contains soft, slightly acidic, clear water with high transparency. Seasons Surveyed The period referred to in this report as the 2018-19 fishing season ran from May 5, 2018 through March 3, 2019. The open-water creel survey ran from May 5, through October 31, 2018, and the ice fishing creel survey ran from December 1, 2018 through March 3, 2019. Weather Ice-out on Manson Lake was around May 6, 2018. Fishable ice formed on

Manson Lake in late November. Deep snow during the second half of February made ice travel difficult and resulted in low fishing effort during February and March. Fishing Regulations The following seasons, daily bag limits, and length limits were in place on Manson Lake during the 2018-19 fishing season:

Species SeasonBag

LimitMin. Size

Largemouth Bass 5/5-3/3 5 14"Smallmouth Bass 5/5-6/15 Catch&Release

6/16-3/3 5 14"Musky 5/26-11/30 1 40"Northern Pike 5/5-3/3 5 noneWalleye 5/5-3/3 3 15"

Panfish year round 25 noneRock Bass year round none none

20"-24" Protected Slot, 1>24"

SPECIES CATCH AND HARVEST INFORMATION Angling effort, catch, and harvest information is summarized for each species in Table 2 and Figures 1-10. Table 2 also includes a comparison of these statistics with the previous creel survey. Information presented about species whose fishing season extends beyond March 3 should be considered minimum estimates. Each species page has up to five graphs depicting the following: 1. ESTIMATED FISHING EFFORT Total calculated number of hours

during each month that anglers spent fishing for a species.

2. ESTIMATED CATCH AND

HARVEST Calculated number of fish of the

indicated species caught or harvested by all anglers, regardless of targeted species.

Manson Lake

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3. ESTIMATED SPECIFIC CATCH AND HARVEST RATES

Calculated number of hours it takes an angler to catch or harvest a fish of the indicated species. Only information from anglers who were specifically targeting that species is reported.

4. LENGTH DISTRIBUTION OF

HARVESTED FISH All fish of a species that were

measured by the clerk during the entire creel survey season.

5. LARGEST AND AVERAGE

LENGTH OF HARVESTED FISH Monthly largest and average length

of harvested fish of a species. Only fish measured by the creel survey clerk are reported.

CREEL SURVEY RESULTS AND DISCUSSION Survey Logistics We encountered no unusual problems conducting the survey or calculating the projections contained in the report. This was the third time the Department conducted a creel survey on Manson Lake. The last creel survey took place in 2006-07. General Angler Information Anglers spent 9,515 hours, or 40.3 hours per acre, fishing Manson Lake during the 2018-19 season (Table 1). That was more than the Oneida County average of 33.6 hours per acre, and less than the fishing effort documented during the 2006-07 creel survey (52.8 hours per acre). July was the most heavily fished month (2,352 hours), and fishing effort was lightest in February (236 hours). The creel clerks were able to conduct 304 interviews throughout the survey.

RESULTS BY SPECIES Walleye (Table 2, Figure 1) Fishing effort directed at Walleye was 722 hours during the season. The greatest fishing effort for Walleye was in December (334 hours). June, August, October, and March all had no documented amount of walleye fishing effort. Total catch of Walleye was 18 fish, with a harvest of six. Highest catch (12 fish) and highest harvest (six fish) occurred in July. Anglers fished an average of 61.7 hours to catch, and 123.5 hours to harvest, a Walleye during the survey. The one measured Walleye was 16.4 inches. Northern Pike (Table 2, Figure 2) Fishing effort directed at Northern Pike was 1,058 hours during the season. Northern Pike fishing effort was greatest in June (318 hours). Total catch of Northern Pike was 1,190 fish, with a harvest of 57. Anglers fished an average of 3.2 hours to catch a Northern Pike during the survey. The mean length of harvested Northern Pike was 21.7 inches, and the largest measured was a 29.8-inch fish. Muskellunge (Table 2, Figure 3) Anglers spent 1,638 hours targeting Muskellunge during the season. Muskellunge fishing effort was greatest in August (465 hours). Total catch of Muskellunge was six fish, and the highest catch (four fish) occurred in September. Anglers fished 303.0 hours to catch a Muskellunge, and there was no documented harvest during the survey. Smallmouth Bass (Table 2, Figure 4) Fishing effort targeted at Smallmouth Bass was 2,848 hours during the season. Smallmouth Bass fishing effort was greatest in August (946 hours). Total catch of Smallmouth Bass was 1,668 fish, with 13

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harvested. Highest catch (615 fish) occurred in June. Anglers fished an average of 2.2 hours to catch a Smallmouth Bass during the survey. Largemouth Bass (Table 2, Figure 5) Largemouth Bass received the most fishing effort of any gamefish species during the season (3,116 hours). Fishing effort was greatest in August (857 hours). Total catch of Largemouth Bass was 3,121 fish, with a harvest of 61. Highest catch (1,152 fish) occurred in June. Anglers fished an average of 1.4 hours to catch a Largemouth Bass during the survey. Panfish (Table 2, Figures 6-10) Yellow Perch received 2,739 hours of directed fishing effort. Total catch of Yellow Perch was 1,695 fish, with 793 harvested. The mean length of Yellow Perch harvested was 8.4 inches. Bluegill were the most sought after panfish species during the survey. Fishing effort directed at Bluegill was 3,276 hours. Total catch of Bluegill was 7,565 fish, with 1,963 harvested. The mean length of Bluegill harvested was 7.1 inches. Black Crappie received 2,145 hours of directed fishing effort. Anglers caught 1,830 Black Crappie and harvested 1,051. The mean length of Black Crappie harvested was 10.1 inches. Pumpkinseed received 492 hours of directed fishing effort. Anglers caught 272 Pumpkinseed and harvested 44. The mean length of Pumpkinseed harvested was 7.2 inches. Rock Bass received 294 hours of directed fishing effort. Anglers caught 4,515 Rock Bass and harvested 511. The mean length of Rock Bass harvested was 7.1 inches.

ACKNOWLEDGMENTS The Department would like to thank all the anglers who took the time to offer information about their fishing trip to the survey clerk. Without their cooperation, the survey would not have been possible. We also thank our cooperators, the Robinson Family, who generously allowed the Department to keep a boat and snowmobile on their property during this survey. Completion of this survey was possible because of the efforts of the following fisheries management and treaty fisheries staff: Lawrence Eslinger, Jeff Blonski, Joelle Underwood, Jason Halverson, John Kubisiak, Bob Consolo, Zach Woiak, and Chad Leanna. Creel clerks on Manson Lake during the survey period were Lauren Radtke, Dale Petersen, Doug Day, Mike Rynski, Steve Timler, and Eric Brown. This creel report was reviewed by John Kubisiak, Lawrence Eslinger, and Zach Woiak of the Wisconsin Department of Natural Resources, Woodruff and Rhinelander, Wisconsin. Additional copies of this report, and those covering other local lakes, can be obtained from the Woodruff DNR or online at: http://dnr.wi.gov/topic/Fishing/north/trtycrlsrvys.html

Month

Number of Angler Party

InterviewsTotal Angler

HoursTotal Angler Hours/Acre

2006-07 Total Angler

Hours/Acre

Oneida County Average

Hours/Acre

Ceded Territory Average

Hours/AcreMay 45 890 3.8 4.8 4.8 4.9June 50 1815 7.7 10.3 6.4 6.3July 49 2352 10.0 12.6 7.2 6.7August 43 1895 8.0 11.6 5.6 5.3September 45 918 3.9 4.6 3.3 3.3October 19 245 1.0 2.2 1.6 1.5December 21 516 2.2 1.7 1.2 1.1January 22 648 2.7 3.4 1.6 1.7February 10 236 1.0 1.7 1.6 1.6March 0 0 0.0 0.0 0.3 0.2*Summer Total 251 8114 34.4 46.1 28.9 28.0*Winter Total 53 1400 5.9 6.8 4.7 4.6Grand Total 304 9515 40.3 52.8 33.6 32.6

*"Summer" is May-October; "Winter" is December-March

Table 1. Sportfishing effort summary, Manson Lake, 2018-19 season; compared with 2006-07 creel results, Oneida County, and Ceded Territory averages.

County Average Hours/Acre is the average angler effort in hours per acre for county lakes that have been surveyed since 1990. This value is useful for fishing pressure comparisons with other waters.

Ceded Territory Average Hours/Acre is the average angler effort in hours per acre for inland lakes in the Ceded Territory that have been surveyed since 1990. This value can be used to compare Manson Lake to other lakes in northern Wisconsin.

Number of Angler Party Interviews is the number of groups of anglers interviewed by the creel clerk. A party is considered the members of a group who fish together in the same boat, ice shanty, or from shore. The clerk fills out one interview form for each group of anglers. The number of individual anglers actually contacted by the clerk is usually much greater than the number of groups listed in this table since most groups consist of more than one angler.

Total Angler Hours is the estimated total number of hours that anglers spent fishing on Manson Lake during each month surveyed.

Total Angler Hours/Acre is the total angler hours divided by the area of the lake in acres. This is useful in order to compare effort on Manson Lake to other lakes.

2006-07 Total Angler Hours/Acre is the total angler hours divided by the area of the lake in acres. This is from the previous creel survey that took place on Manson Lake.

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Table 2. Comparison of creel survey synopses, Manson Lake, 2018-19 and 2006-07 fishing seasons.

CREEL YEAR: 2018-19

SPECIES

DIRECTEDEFFORT(Hours)

PERCENTOF TOTAL

TOTALCATCH

SPECIFICCATCHRATE

(Hrs/Fish) *TOTAL

HARVEST

SPECIFICHARVEST

RATE(Hrs/Fish) **

MEANLENGTH OFHARVESTED

FISHWalleye 722 3.9% 18 61.7 6 123.5 16.4Northern Pike 1058 5.8% 1190 3.2 57 22.9 21.7Muskellunge 1638 8.9% 6 303.0 0Smallmouth Bass 2848 15.5% 1668 2.2 13 909.1 13.3Largemouth Bass 3116 17.0% 3121 1.4 61 82.6 12.8Yellow Perch 2739 14.9% 1695 1.8 793 3.8 8.4Bluegill 3276 17.9% 7565 0.6 1963 1.8 7.1Black Crappie 2145 11.7% 1830 1.2 1051 2.0 10.1Pumpkinseed 492 2.7% 272 1.8 44 11.2 7.2Rock Bass 294 1.6% 4515 0.4 511 1.7 7.1

* A blank cell in this column indicates that no fish of a given species were caught by anglers who specifically targeted that species.** A blank cell in this column indicates that no fish of a given species were harvested by anglers who specifically targeted that species.

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CREEL YEAR: 2006-07

SPECIES

DIRECTEDEFFORT(Hours)

PERCENTOF TOTAL

TOTALCATCH

SPECIFICCATCHRATE

(Hrs/Fish)TOTAL

HARVEST

SPECIFICHARVEST

RATE(Hrs/Fish)

MEANLENGTH OFHARVESTED

FISHWalleye 2665 12.7% 173 23.1 36 87.0 20.0Northern Pike 1587 7.6% 13 8.0 12 75.8 25.4Muskellunge 2927 14.0% 140 30.0 0Smallmouth Bass 2117 10.1% 2159 1.5 29 100.0 14.8Largemouth Bass 1616 7.7% 1759 2.0 46 41.2 15.9Yellow Perch 2630 12.6% 3413 0.9 1660 1.8 8.2Bluegill 4746 22.7% 17566 0.3 4649 1.1 7.0Pumpkinseed 4 0.0% 44 1.2 0Rock Bass 212 1.0% 4552 0.8 513 2.2 8.1Black Crappie 2423 11.6% 801 3.4 548 4.8 10.8

7

0.0 0.0

9.6

0.0 0.0 0.0 0.0 0.0 0.0 0.00.0 0.0

19.1

0.0 0.0 0.0 0.0 0.0 0.0 0.00

5

10

15

20

25

MAY JUN. JUL. AUG. SEP. OCT. DEC. JAN. FEB. MAR.

HO

UR

S PE

R F

ISH

MONTH

PROJECTED SPECIFIC CATCH AND HARVEST RATES

CATCH HARVEST

6

0

12

0 0 0 0 0 00 0

6

0 0 0 0 0 00

4

8

12

16


NU

MB

ER O

F FI

SH

MONTH

PROJECTED CATCH AND HARVEST

CATCH HARVEST

1

0

1

2

7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

NU

MB

ER O

F FI

SH

INCHES

LENGTH DISTRIBUTION OF FISH MEASURED BY THE CREEL CLERK

16.4 16.4

0

5

10

15

20


INC

HES

MONTH

AVERAGE AND LARGEST LENGTH OFFISH HARVESTED

AVERAGE LARGEST

46

112

24

334

148

58

0

75

150

225

300

375


ANG

LIN

G H

OU

RS

MONTH

PROJECTED FISHING EFFORT

WALLEYE

Figure 1. Walleye sportfishing effort, catch, harvest, and length distribution, Manson Lake during 2018-19.

8 0.8 1.90.0

5.63.2

0.0

13.2 13.016.1

0.0

26.5

10.6

0.0 0.0 0.0 0.0

23.126.0

0.0 0.00

8

16

24

32


HO

UR

S PE

R F

ISH

MONTH


CATCH HARVEST

167

466

207171

121

6 26 15 119 300 0 4 0 10 4 0

0

100

200

300

400

500


NU

MB

ER O

F FI

SH

MONTH


CATCH HARVEST

2 2 2

1 1 1 1

0

1

2

3

14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

NU

MB

ER O

F FI

SH

INCHES


23.2

19.618.2

23.525.8

20.218.2

29.8

0

8

16

24

32


INC

HES

MONTH


AVERAGE LARGEST

73

318

66

162

58

0

222

101

58

0

100

200

300

400


ANG

LIN

G H

OU

RS

MONTH

PROJECTED FISHING EFFORT NORTHERN PIKE

Figure 2. Northern Pike sportfishing effort, catch, harvest, and length distribution, Manson Lake during 2018-19.

9

0.0 0.0 0.0 0.0

92.6

119.0

0.0 0.0 0.0 0.00.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.00

30

60

90

120

150


HO

UR

S PE

R F

ISH

MONTH


CATCH HARVEST

0 0 0 0

4

2

0 0 00 0 0 0 0 0 0 0 00

1

2

3

4

5


NU

MB

ER O

F FI

SH

MONTH


CATCH HARVEST

116

233282

465

328

214

0

100

200

300

400

500


ANG

LIN

G H

OU

RS

MONTH

PROJECTED FISHING EFFORTMUSKELLUNGE

Figure 3. Muskellunge sportfishing effort, catch, harvest, and length distribution, Manson Lake during 2018-19.

10 3.6 1.5 2.0 2.8 3.29.8

0.0 0.0 0.0 0.00.0 0.0 0.0 0.0

54.1

0.0 0.0 0.0 0.0 0.00

15

30

45

60


HO

UR

S PE

R F

ISH

MONTH


CATCH HARVEST

82

615

477408

833 0 0 00 10 0 0 3 0 0 0 0

0

150

300

450

600

750


NU

MB

ER O

F FI

SH

MONTH


CATCH HARVEST

1 1

0

1

2

8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

NU

MB

ER O

F FI

SH

INCHES


14.412.2

14.412.2

0

5

10

15

20


INC

HES

MONTH


AVERAGE LARGEST

170

773

658

946

169

2693

130

200

400

600

800

1000


ANG

LIN

G H

OU

RS

MONTH

PROJECTED FISHING EFFORTSMALLMOUTH BASS

Figure 4. Smallmouth Bass sportfishing effort, catch, harvest, and length distribution, Manson Lake during 2018-19.

11 1.1 1.1 1.6 1.8 1.7 0.6

41.8

0.0 0.0 0.00.0 0.0

54.6

0.0

11.7

0.0 0.0 0.0 0.0 0.00

15

30

45

60


HO

UR

S PE

R F

ISH

MONTH


CATCH HARVEST

363

1152

743

522

293

46 2 0 00 20 13 0 28 0 0 0 00

300

600

900

1200

1500


NU

MB

ER O

F FI

SH

MONTH


CATCH HARVEST

2

3 3

2

1 1

0

1

2

3

4

8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

NU

MB

ER O

F FI

SH

INCHES


14.9 14.6

12.1

15.0 14.6

17.2

0

4

8

12

16

20


INC

HES

MONTH


AVERAGE LARGEST

286

848

691

857

292

29100

130

200

400

600

800

1000


ANG

LIN

G H

OU

RS

MONTH


LARGEMOUTH BASS

Figure 5. Largemouth Bass sportfishing effort, catch, harvest, and length distribution, Manson Lake during 2018-19.

12 4.12.4 1.3 1.3 1.2 0.5

4.35.9 5.8

0.00.02.5 2.6 3.3 2.4

0.0

18.7

28.3

15.6

0.00

8

16

24

32


HO

UR

S PE

R F

ISH

MONTH


CATCH HARVEST

12

192

582

410

303

485 75

320

157

270

168 148

0 24 15 110

200

400

600

800


NU

MB

ER O

F FI

SH

MONTH


CATCH HARVEST

1

27

48

15

3

0

15

30

45

60

3 4 5 6 7 8 9 10 11 12 13 14

NU

MB

ER O

F FI

SH

INCHES


8.5 8.1 8.4 8.4 8.88.1

9.09.6

11.1

9.4

11.2

9.68.7

9.4

0

2

4

6

8

10

12


INC

HES

MONTH


AVERAGE LARGEST

48

311

700

459

342

2

270

438

169

0

200

400

600

800


ANG

LIN

G H

OU

RS

MONTH


YELLOW PERCH

Figure 6. Yellow Perch sportfishing effort, catch, harvest, and length distribution, Manson Lake during 2018-19.

13 0.8 0.6 0.4 0.3 0.4 0.0 0.0

23.6

0.0 0.0

5.4

1.7 1.6 0.9 1.1 0.0 0.0 0.0 0.0 0.00

5

10

15

20

25


HO

UR

S PE

R F

ISH

MONTH


CATCH HARVEST

545

1050

3293

2052

611

0 0 14 067264

796 617219

0 0 0 00

800

1600

2400

3200

4000


NU

MB

ER O

F FI

SH

MONTH


CATCH HARVEST

2

60

104

5

0

50

100

150

3 4 5 6 7 8 9 10

NU

MB

ER O

F FI

SH

INCHES


7.67.0 7.1 7.1 7.0

8.57.6 8.0 8.3

7.7

0

2

4

6

8

10


INC

HES

MONTH


AVERAGE LARGEST

349 407

1059

558

230 228325

120

0

300

600

900

1200


ANG

LIN

G H

OU

RS

MONTH


BLUEGILL

Figure 7. Bluegill sportfishing effort, catch, harvest, and length distribution, Manson Lake during 2018-19.

14 0.8 0.8

8.94.4

33.6

0.0 0.0 1.04.0

0.02.5 1.4 0.0 0.0

33.6

0.0 0.0 1.14.0

0.00

8

16

24

32

40


HO

UR

S PE

R F

ISH

MONTH


CATCH HARVEST

489

714

6210 4 0 0

519

32

158

425

0 0 4 0 0

432

32

0

150

300

450

600

750


NU

MB

ER O

F FI

SH

MONTH


CATCH HARVEST

1

8

3128

15

1 10

10

20

30

40

3 4 5 6 7 8 9 10 11 12 13 14

NU

MB

ER O

F FI

SH

INCHES


10.2 9.5 9.210.6 10.2

12.311.5

9.2

13.0

10.6

0

4

8

12

16


INC

HES

MONTH


AVERAGE LARGEST

401

576

10443

119

276

497

129

0

150

300

450

600

750


ANG

LIN

G H

OU

RS

MONTH


BLACK CRAPPIE

Figure 8. Black Crappie sportfishing effort, catch, harvest, and length distribution, Manson Lake during 2018-19.

15 1.30.0

2.0 2.1

0.0 0.0 0.0 0.0 0.0 0.0

9.7

0.0

11.710.1

0.0 0.0 0.0 0.0 0.0 0.00

3

6

9

12

15


HO

UR

S PE

R F

ISH

MONTH


CATCH HARVEST

123

0

76 73

0 0 0 0 016

013 15

0 0 0 0 00

30

60

90

120

150


NU

MB

ER O

F FI

SH

MONTH


CATCH HARVEST

2

4

0

1

2

3

4

5

3 4 5 6 7 8 9 10

NU

MB

ER O

F FI

SH

INCHES


7.3 7.2 7.17.7

7.2 7.4

0

2

4

6

8

10


INC

HES

MONTH


AVERAGE LARGEST

159148 152

20 13

0

40

80

120

160

200


ANG

LIN

G H

OU

RS

MONTH


PUMPKINSEED

Figure 9. Pumpkinseed sportfishing effort, catch, harvest, and length distribution, Manson Lake during 2018-19.

16

0.9

1.4

0.20.0

0.3

0.0 0.0 0.0 0.0 0.00.0

1.4

0.0 0.0

0.5

0.0 0.0 0.0 0.0 0.00

1

2


HO

UR

S PE

R F

ISH

MONTH


CATCH HARVEST

978

1444 1476

247359

0 11 0 00

319

12 29151

0 0 0 00

400

800

1200

1600


NU

MB

ER O

F FI

SH

MONTH


CATCH HARVEST

14

10

5

0

3

6

9

12

15

3 4 5 6 7 8 9 10 11 12

NU

MB

ER O

F FI

SH

INCHES


7.07.8 7.5

7.0

8.2 8.1 8.08.4

0

2

4

6

8

10


INC

HES

MONTH


AVERAGE LARGEST

100

5665

0

73

00

25

50

75

100

125


ANG

LIN

G H

OU

RS

MONTH


ROCK BASS

Figure 10. Rock Bass sportfishing effort, catch, harvest, and length distribution, Manson Lake during 2018-19.

manson lake · 3/3/2019 · conduct creel surveys. a creel survey is an assessment tool used to...

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