OXBOW LAKE - Wisconsin Department of Natural ResourcesMar 03, 2019 · GENERAL LAKE INFORMATION...
Transcript of OXBOW LAKE - Wisconsin Department of Natural ResourcesMar 03, 2019 · GENERAL LAKE INFORMATION...
WISCONSIN DEPARTMENT OF NATURAL RESOURCES CREEL SURVEY REPORT
OXBOW LAKE VILAS 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 Oxbow Lake; discussion of results of the survey; and detailed summaries by species of fishing effort, catch and harvest. GENERAL LAKE INFORMATION
Location Oxbow Lake is located in Vilas County in the town of Presque Isle. Physical Characteristics Oxbow Lake is a 515-acre drainage lake with a maximum depth of 42 feet. Littoral substrate consists primarily of sand, gravel, and muck. Oxbow Lake contains soft, slightly acidic, light brown water of moderate 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 Oxbow Lake was around May 5, 2018. Fishable ice formed on Oxbow 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 Oxbow 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
Panfish year round 25 noneRock Bass year round none none
No Minimum, 1>14"
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.
Oxbow 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 Oxbow Lake. The last creel survey took place in 2008-09. General Angler Information Anglers spent 8,835 hours, or 17.3 hours per acre, fishing Oxbow Lake during the 2018-19 season (Table 1). That was less than the Vilas County average of 34.5 hours per acre, and less than the fishing effort documented during the 2008-09 creel survey (26.6 hours per acre). August was the most heavily fished month (1,811 hours), and fishing effort was lightest in January (45 hours). The creel clerks were able to conduct 329 interviews throughout the survey.
RESULTS BY SPECIES Walleye (Table 2, Figure 1) Walleye received the most fishing effort of any gamefish species during the season. Anglers spent 3,703 hours targeting Walleye. The greatest fishing effort for Walleye was in May (1,140 hours). January had the least amount of Walleye fishing effort (34 hours). Total catch of Walleye was 1,163 fish, with a harvest of 444. Highest catch (548 fish) and highest harvest (224 fish) occurred in May. Anglers fished an average of 3.2 hours to catch, and 8.3 hours to harvest, a Walleye during the survey. The mean length of harvested Walleye was 12.8 inches, and the largest measured was a 24.9-inch fish. Northern Pike (Table 2, Figure 2) Fishing effort directed at Northern Pike was 512 hours during the season. Northern Pike fishing effort was greatest in July and December (104 hours). Total catch of Northern Pike was 205 fish, with a harvest of 16. Anglers fished an average of 8.3 hours to catch a Northern Pike during the survey. The mean length of harvested Northern Pike was 18.3 inches, and the largest measured was a 21.3-inch fish. Muskellunge (Table 2, Figure 3) Anglers spent 3,693 hours targeting Muskellunge during the season. Muskellunge fishing effort was greatest in September (1,114 hours). Total catch of Muskellunge was 164 fish, and the highest catch (38 fish) occurred in August. Anglers fished 25.6 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 1,360 hours during the season. Smallmouth Bass fishing effort was greatest
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in August (544 hours). Total catch of Smallmouth Bass was 1,943 fish, with 12 harvested. Highest catch (807 fish) occurred in August. Anglers fished an average of 1.4 hours to catch a Smallmouth Bass during the survey. Largemouth Bass (Table 2, Figure 5) Fishing effort directed at Largemouth Bass was 407 hours during the season. Largemouth Bass fishing effort was greatest in June (148 hours). Total catch of Largemouth Bass was 144 fish, with no documented harvest. Highest catch (70 fish) occurred in August. Anglers fished an average of 14.4 hours to catch a Largemouth Bass during the survey. Panfish (Table 2, Figures 6-10) Yellow Perch were the most sought after panfish species during the survey. Fishing effort directed at Yellow Perch was 1,230 hours. Total catch of Yellow Perch was 2,874 fish, with 348 harvested. The mean length of Yellow Perch harvested was 7.4 inches. Bluegill received 693 hours of directed fishing effort. Total catch of Bluegill was 1,488 fish, with 113 harvested. The mean length of Bluegill harvested was 6.3 inches. Black Crappie received 196 hours of directed fishing effort. Anglers caught 76 Black Crappie and harvested 18, The mean length of Black Crappie harvested was 10.5 inches. Pumpkinseed received 206 hours of directed fishing effort. Anglers caught 195 Pumpkinseed and harvested seven. The mean length of Pumpkinseed harvested was 6.2 inches.
Rock Bass received only 72 hours of directed fishing effort. However, anglers caught 598 Rock Bass and harvested 13. The mean length of Rock Bass harvested was 7.3 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, Paul and Joan Cieslak, 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, Tim Tobias, and Hadley Boehm. Creel clerks on Oxbow Lake during the survey period were Matt Lorenzoni and Mike Rynski. This creel report was reviewed by John Kubisiak, Lawrence Eslinger, and Steve Gilbert of the Wisconsin Department of Natural Resources, Woodruff, 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
2008-09 Total Angler
Hours/Acre
Vilas County Average
Hours/Acre
Ceded Territory Average
Hours/AcreMay 50 1415 2.8 2.0 5.2 4.9June 58 1280 2.5 4.5 6.8 6.3July 61 1626 3.2 5.3 7.3 6.7August 55 1811 3.5 5.7 6.4 5.3September 65 1605 3.1 4.5 4.2 3.3October 28 885 1.7 3.1 1.9 1.5December 6 104 0.2 0.1 0.6 1.1January 4 45 0.1 0.7 0.9 1.7February 2 63 0.1 0.6 1.0 1.6March 0 0 0.0 0.0 0.2 0.2*Summer Total 317 8622 16.9 25.2 31.8 28.0*Winter Total 12 213 0.4 1.4 2.7 4.6Grand Total 329 8835 17.3 26.6 34.5 32.6
*"Summer" is May-October; "Winter" is December-March
Table 1. Sportfishing effort summary, Oxbow Lake, 2018-19 season; compared with 2008-09 creel results, Vilas 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 Oxbow 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 Oxbow 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 Oxbow Lake to other lakes.
2008-09 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 Oxbow Lake.
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Table 2. Comparison of creel survey synopses, Oxbow Lake, 2018-19 and 2008-09 fishing seasons.
CREEL YEAR: 2018-19
SPECIES
DIRECTEDEFFORT(Hours)
PERCENTOF TOTAL
TOTALCATCH
SPECIFICCATCHRATE
(Hrs/Fish) *TOTAL
HARVEST
SPECIFICHARVEST
RATE(Hrs/Fish) **
MEANLENGTH OFHARVESTED
FISHWalleye 3703 30.7% 1163 3.2 444 8.3 12.8Northern Pike 512 4.2% 205 8.3 16 35.5 18.3Muskellunge 3693 30.6% 164 25.6 0Smallmouth Bass 1360 11.3% 1943 1.4 12 15.6Largemouth Bass 407 3.4% 144 14.4 0Yellow Perch 1230 10.2% 2874 0.7 348 4.5 7.4Bluegill 693 5.7% 1488 0.5 113 6.4 6.3Black Crappie 196 1.6% 76 6.3 18 10.5Pumpkinseed 206 1.7% 195 2.0 7 6.2Rock Bass 72 0.6% 598 1.3 13 7.3
* 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: 2008-09
SPECIES
DIRECTEDEFFORT(Hours)
PERCENTOF TOTAL
TOTALCATCH
SPECIFICCATCHRATE
(Hrs/Fish)TOTAL
HARVEST
SPECIFICHARVEST
RATE(Hrs/Fish)
MEANLENGTH OFHARVESTED
FISHWalleye 5069 28.4% 4308 1.2 1326 3.9 12.5Northern Pike 312 1.7% 263 7.7 45 22.4 18.2Muskellunge 5690 31.8% 314 21.5 0Smallmouth Bass 1363 7.6% 1811 1.1 34 62.9 14.8Largemouth Bass 358 2.0% 308 5.2 9 40.5 12.0Yellow Perch 2174 12.2% 4498 0.7 1315 2.0 7.8Bluegill 1762 9.9% 6320 0.3 1102 1.6 6.8Pumpkinseed 287 1.6% 1491 0.6 153 3.0 6.6Rock Bass 95 0.5% 2701 0.3 180 1.1 7.0Black Crappie 769 4.3% 193 6.6 34 2.9 9.3
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2.1 4.0 7.5 7.0 7.60.7 0.0 0.0 0.0 0.0
5.1 8.815.7 12.1
83.3
2.8 0.0 0.0 0.0 0.00
20
40
60
80
100
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
548
13786 77 62
253
0 0 0
224
63 41 446
660 0 0
0
150
300
450
600
MAY JUN. JUL. AUG. SEP. OCT. DEC. JAN. FEB. MAR.
NU
MB
ER O
F FI
SH
MONTH
PROJECTED CATCH AND HARVEST
CATCH HARVEST
9
2926
16
6
2 31 2
0
10
20
30
40
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
12.513.9 13.7
12.4 12.3 12.5
18.0
24.9 24.1
13.3 13.7 14.5
0
8
16
24
32
MAY JUN. JUL. AUG. SEP. OCT. DEC. JAN. FEB. MAR.
INC
HES
MONTH
AVERAGE AND LARGEST LENGTH OFFISH HARVESTED
AVERAGE LARGEST
1140
555648
538466
183104
34 350
400
800
1200
MAY JUN. JUL. AUG. SEP. OCT. DEC. JAN. FEB. MAR.
ANG
LIN
G H
OU
RS
MONTH
PROJECTED FISHING EFFORT
WALLEYE
Figure 1. Walleye sportfishing effort, catch, harvest, and length distribution, Oxbow Lake during 2018-19.
8
0.0 0.0
8.24.2
26.9
0.0
4.98.3
29.7
0.00.0 0.0 0.0 0.0 0.0 0.0
11.48.3
29.7
0.00
10
20
30
40
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
29 3225
51
31
11
21
4 10 0 0 0 0 29
4 10
15
30
45
60
MAY JUN. JUL. AUG. SEP. OCT. DEC. JAN. FEB. MAR.
NU
MB
ER O
F FI
SH
MONTH
PROJECTED CATCH AND HARVEST
CATCH HARVEST
1
4
1 1 1
0
2
4
6
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
LENGTH DISTRIBUTION OF FISH MEASURED BY THE CREEL CLERK
21.3
16.9
20.017.8
21.3
17.2
20.217.8
0
5
10
15
20
25
MAY JUN. JUL. AUG. SEP. OCT. DEC. JAN. FEB. MAR.
INC
HES
MONTH
AVERAGE AND LARGEST LENGTH OFFISH HARVESTED
AVERAGE LARGEST
5
73
104
8176
0
104
34 35
0
25
50
75
100
125
MAY JUN. JUL. AUG. SEP. OCT. DEC. JAN. FEB. MAR.
ANG
LIN
G H
OU
RS
MONTH
PROJECTED FISHING EFFORT NORTHERN PIKE
Figure 2. Northern Pike sportfishing effort, catch, harvest, and length distribution, Oxbow Lake during 2018-19.
9
52.9
14.1
32.9
20.4
33.126.4
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
15
30
45
60
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
8
33
19
3834
29
0 2 10 0 0 0 0 0 0 0 00
10
20
30
40
MAY JUN. JUL. AUG. SEP. OCT. DEC. JAN. FEB. MAR.
NU
MB
ER O
F FI
SH
MONTH
PROJECTED CATCH AND HARVEST
CATCH HARVEST
140
352
619
771
1114
697
0 00
300
600
900
1200
MAY JUN. JUL. AUG. SEP. OCT. DEC. JAN. FEB. MAR.
ANG
LIN
G H
OU
RS
MONTH
PROJECTED FISHING EFFORTMUSKELLUNGE
Figure 3. Muskellunge sportfishing effort, catch, harvest, and length distribution, Oxbow Lake during 2018-19.
10
14.5
2.51.3 1.0 1.0
0.0 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
4
8
12
16
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
47
212
574
807
292
11 0 0 00 0 0 6 6 0 0 0 00
200
400
600
800
1000
MAY JUN. JUL. AUG. SEP. OCT. DEC. JAN. FEB. MAR.
NU
MB
ER O
F FI
SH
MONTH
PROJECTED CATCH AND HARVEST
CATCH HARVEST
1 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
LENGTH DISTRIBUTION OF FISH MEASURED BY THE CREEL CLERK
13.9
16.5
13.9
17.6
0
4
8
12
16
20
MAY JUN. JUL. AUG. SEP. OCT. DEC. JAN. FEB. MAR.
INC
HES
MONTH
AVERAGE AND LARGEST LENGTH OFFISH HARVESTED
AVERAGE LARGEST
160
290249
544
117
00
150
300
450
600
MAY JUN. JUL. AUG. SEP. OCT. DEC. JAN. FEB. MAR.
ANG
LIN
G H
OU
RS
MONTH
PROJECTED FISHING EFFORTSMALLMOUTH BASS
Figure 4. Smallmouth Bass sportfishing effort, catch, harvest, and length distribution, Oxbow Lake during 2018-19.
11
18.0
0.0 0.0
4.3
0.0 0.0 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
4
8
12
16
20
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
37
0 0
70
17 20
0 0 00 0 0 0 0 0 0 0 00
15
30
45
60
75
MAY JUN. JUL. AUG. SEP. OCT. DEC. JAN. FEB. MAR.
NU
MB
ER O
F FI
SH
MONTH
PROJECTED CATCH AND HARVEST
CATCH HARVEST
48
148
101110
0 00
30
60
90
120
150
180
MAY JUN. JUL. AUG. SEP. OCT. DEC. JAN. FEB. MAR.
ANG
LIN
G H
OU
RS
MONTH
PROJECTED FISHING EFFORT
LARGEMOUTH BASS
Figure 5. Largemouth Bass sportfishing effort, catch, harvest, and length distribution, Oxbow Lake during 2018-19.
12 1.0 0.80.5 0.7
1.10.5
0.0 0.0 0.0 0.0
3.0
4.85.4
0.0
2.4 2.2
0.0 0.0 0.0 0.00
2
4
6
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
378459
1150
654
15776
0 0 0117 72 67 31 48 13 0 0 0
0
300
600
900
1200
1500
MAY JUN. JUL. AUG. SEP. OCT. DEC. JAN. FEB. MAR.
NU
MB
ER O
F FI
SH
MONTH
PROJECTED CATCH AND HARVEST
CATCH HARVEST
3
21
35
17
10
8
16
24
32
40
3 4 5 6 7 8 9 10 11 12 13 14
NU
MB
ER O
F FI
SH
INCHES
LENGTH DISTRIBUTION OF FISH MEASURED BY THE CREEL CLERK
8.07.3 7.2 7.3
6.87.7
9.28.4
7.6 7.88.4 8.4
0
2
4
6
8
10
MAY JUN. JUL. AUG. SEP. OCT. DEC. JAN. FEB. MAR.
INC
HES
MONTH
AVERAGE AND LARGEST LENGTH OFFISH HARVESTED
AVERAGE LARGEST
349
164
356
230
102
29
0
75
150
225
300
375
MAY JUN. JUL. AUG. SEP. OCT. DEC. JAN. FEB. MAR.
ANG
LIN
G H
OU
RS
MONTH
PROJECTED FISHING EFFORT
YELLOW PERCH
Figure 6. Yellow Perch sportfishing effort, catch, harvest, and length distribution, Oxbow Lake during 2018-19.
13
4.2
1.30.4 0.4
1.0
0.0 0.0 0.0 0.0 0.00.0 0.0
5.7
3.4
7.2
0.0 0.0 0.0 0.0 0.00
2
4
6
8
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
19
206
661
480
118
4 0 0 00 048 57
8 0 0 0 00
200
400
600
800
MAY JUN. JUL. AUG. SEP. OCT. DEC. JAN. FEB. MAR.
NU
MB
ER O
F FI
SH
MONTH
PROJECTED CATCH AND HARVEST
CATCH HARVEST
3
14
3
0
3
6
9
12
15
3 4 5 6 7 8 9 10
NU
MB
ER O
F FI
SH
INCHES
LENGTH DISTRIBUTION OF FISH MEASURED BY THE CREEL CLERK
6.5 6.45.9
7.77.0 6.7
0
2
4
6
8
10
MAY JUN. JUL. AUG. SEP. OCT. DEC. JAN. FEB. MAR.
INC
HES
MONTH
AVERAGE AND LARGEST LENGTH OFFISH HARVESTED
AVERAGE LARGEST
79107
277
170
60
00
75
150
225
300
MAY JUN. JUL. AUG. SEP. OCT. DEC. JAN. FEB. MAR.
ANG
LIN
G H
OU
RS
MONTH
PROJECTED FISHING EFFORT
BLUEGILL
Figure 7. Bluegill sportfishing effort, catch, harvest, and length distribution, Oxbow Lake during 2018-19.
14 0.0 0.0 0.0
5.4
0.0 0.0 0.00.4
0.0 0.00.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.00
2
4
6
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
11
4
12
63
15
0
25
0
11
0 0 0 0
7
0 0 00
8
16
24
32
MAY JUN. JUL. AUG. SEP. OCT. DEC. JAN. FEB. MAR.
NU
MB
ER O
F FI
SH
MONTH
PROJECTED CATCH AND HARVEST
CATCH HARVEST
1 1
2
1 1
0
1
2
3
3 4 5 6 7 8 9 10 11 12 13 14
NU
MB
ER O
F FI
SH
INCHES
LENGTH DISTRIBUTION OF FISH MEASURED BY THE CREEL CLERK
10.810.0
12.310.6
0
3
6
9
12
15
MAY JUN. JUL. AUG. SEP. OCT. DEC. JAN. FEB. MAR.
INC
HES
MONTH
AVERAGE AND LARGEST LENGTH OFFISH HARVESTED
AVERAGE LARGEST
0
20
130
35
0 011
0
30
60
90
120
150
MAY JUN. JUL. AUG. SEP. OCT. DEC. JAN. FEB. MAR.
ANG
LIN
G H
OU
RS
MONTH
PROJECTED FISHING EFFORT
BLACK CRAPPIE
Figure 8. Black Crappie sportfishing effort, catch, harvest, and length distribution, Oxbow Lake during 2018-19.
15 0.0 0.0
1.7
0.0 0.0 0.0 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
1
2
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
5 8
134
38
3 70 0 03 4 0 0 0 0 0 0 0
0
30
60
90
120
150
MAY JUN. JUL. AUG. SEP. OCT. DEC. JAN. FEB. MAR.
NU
MB
ER O
F FI
SH
MONTH
PROJECTED CATCH AND HARVEST
CATCH HARVEST
2
0
1
2
3
3 4 5 6 7 8 9 10
NU
MB
ER O
F FI
SH
INCHES
LENGTH DISTRIBUTION OF FISH MEASURED BY THE CREEL CLERK
6.46.0
6.46.0
0
2
4
6
8
MAY JUN. JUL. AUG. SEP. OCT. DEC. JAN. FEB. MAR.
INC
HES
MONTH
AVERAGE AND LARGEST LENGTH OFFISH HARVESTED
AVERAGE LARGEST
020
179
7 0 00
40
80
120
160
200
MAY JUN. JUL. AUG. SEP. OCT. DEC. JAN. FEB. MAR.
ANG
LIN
G H
OU
RS
MONTH
PROJECTED FISHING EFFORT
PUMPKINSEED
Figure 9. Pumpkinseed sportfishing effort, catch, harvest, and length distribution, Oxbow Lake during 2018-19.
16
0.0
2.5
0.9
0.0 0.0 0.0 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
1
2
3
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
3
61
182 180
121
51
0 0 00 0 0 0 6 7 0 0 00
40
80
120
160
200
MAY JUN. JUL. AUG. SEP. OCT. DEC. JAN. FEB. MAR.
NU
MB
ER O
F FI
SH
MONTH
PROJECTED CATCH AND HARVEST
CATCH HARVEST
2 2
0
1
2
3
3 4 5 6 7 8 9 10 11 12
NU
MB
ER O
F FI
SH
INCHES
LENGTH DISTRIBUTION OF FISH MEASURED BY THE CREEL CLERK
6.7
7.8
6.7
7.9
0
2
4
6
8
10
MAY JUN. JUL. AUG. SEP. OCT. DEC. JAN. FEB. MAR.
INC
HES
MONTH
AVERAGE AND LARGEST LENGTH OFFISH HARVESTED
AVERAGE LARGEST
0
20
45
7
0 00
10
20
30
40
50
MAY JUN. JUL. AUG. SEP. OCT. DEC. JAN. FEB. MAR.
ANG
LIN
G H
OU
RS
MONTH
PROJECTED FISHING EFFORT
ROCK BASS
Figure 10. Rock Bass sportfishing effort, catch, harvest, and length distribution, Oxbow Lake during 2018-19.