Petenwell Lake

Petenwell Lake

Size
23,196ac
Boat Launch
Yes
Carry-in Launch
Yes
Toilet
No
Boat Dock
No
Species in Petenwell Lake
Walleye
Walleye
Smallmouth bass
Smallmouth bass
Flathead catfish
Flathead catfish
Channel catfish
Channel catfish
Crappie
Crappie
Bluegill
Bluegill
Perch
Perch
Northern pike
Northern pike
Muskellunge
Muskellunge
Sturgeon
Sturgeon
White bass
White bass
Rock bass
Rock bass
Largemouth bass
Largemouth bass
Pumpkinseed
Pumpkinseed
Brown trout
Brown trout

Overview

The state's second largest lake, widely known for exciting spring walleye runs. Good numbers of white bass and crappie offer steady action. Muskie, bass and pike also available..

Petenwell Lake Map

Fishing Regulations

Special Fishing regulations: This lake has special fishing regulations that differ from statewide or border water regulations for those species identified below and take precedence. Regulations listed below are currently in place. Visit the fishing regulations page for links to upcoming regulations for specific lakes.

Special Waterbody Regulations

  • Hook and line fishing is open all year for fish species except muskellunge, lake sturgeon, trout, paddlefish and threatened or endangered species. Motor Trolling is allowed with up to 3 hooks, baits, or lures, per angler.

Special Species Regulations

  • Catfish: Open all year: No minimum length limit and the daily bag limit is 10
  • Walleye: See Walleye, Sauger, and Hybrids.
  • Urban waters gamefish: This waterbody is not considered an urban water, Urban Waters Gamefish regulations do not apply.
  • Shortnose gar: See Rough Fish.
  • Sauger and hybrids: See Walleye, Sauger, and Hybrids.
  • Longnose gar: See Rough Fish.
  • Hybrid, Striped, Yellow, and White Bass: See Rock, Yellow and White Bass.
  • Flathead catfish: See Catfish.
  • Crappies: See Panfish.
  • Channel catfish: See Catfish.
  • Bowfin: See Rough Fish.
  • Bluegill: See Panfish.
  • White perch: Open all year: The daily bag limit is 0, one may be killed and possessed for transport to a WDNR Office
  • Trout and salmon: See Trout regulations layer.
  • Shovelnose sturgeon: Closed. No fishing allowed.
  • Ruffe: Open all year: The daily bag limit is 0, one may be killed and possessed for transport to a WDNR Office
  • Round goby: Open all year: The daily bag limit is 0, one may be killed and possessed for transport to a WDNR Office
  • Rough fish: Open all year: No minimum length limit and the daily bag limit is unlimited
  • Rock, Yellow, and White Bass: Open all year: No minimum length limit and the daily bag limit is unlimited
  • Paddlefish: Closed. No fishing allowed.
  • Smallmouth bass: See Largemouth and Smallmouth Bass.
  • Largemouth bass: See Largemouth and Smallmouth Bass.
  • Largemouth bass and smallmouth bass: Open all year: The minimum length limit is 14” and the daily bag limit is 5
  • Northern pike: Open all year: The minimum length limit is 32” and the daily bag limit is 1
  • Muskellunge and hybrids: May 3, 2025 to December 31, 2025: The minimum length limit is 50” and the daily bag limit is 1
  • Lake sturgeon: Closed. No fishing allowed.
  • Cisco and whitefish: Open all year: No minimum length limit and the daily bag limit is 10
  • Bullheads: Open all year: No minimum length limit and the daily bag limit is unlimited
  • Walleye, Saugers, and Hybrids: Open all year: The minimum length is 15”, but walleye, sauger, and hybrids from 20” to 28” may not be kept, and only 1 fish over 28” is allowed. The daily bag limit is 3
  • Panfish: Open all year: No minimum length limit and the daily bag limit is 25

Features

Petenwell flowage was created in the late 1940’s and became the second largest inland lake in Wisconsin. The dam that blocks the Wisconsin River to form the Petenwell Flowage was created to provide hydroelectric power and flood control. Petenwell is heavily used for many recreational activities such as: boating, fishing, swimming, hunting and canoeing/kayaking. The flowage provides many opportunities for shore anglers at a variety of locations. The Petenwell Flowage has an annual catch and release muskie tournament founded by Todd Forcier and has also hosted bowfishing tournaments for rough fish. Stumps, submerged timber and shallow water make parts of the flowage difficult to navigate. Many of these hazards are not marked on this map or with buoys. Careful navigation should be used, especially in the upper third of the flowage. A navigational channel is marked with buoys from Browns Creek outlet area downstream to Yellow Banks and from Devils Elbow to the Wisconsin River channel. Buoys have also been placed along the edge of Strongs Prairie Flats to indicate the shallow and dangerous area east of the buoys. Almost the entire shoreline of Petenwell is open to public use, with a few exceptions. The public access is from the shoreline back 100 feet. This strip is marked with signs and has walking trails. The exceptions to public access are well marked.

Forage

Small suckers and other small rough fish are heavily preyed upon by muskie. Biologists believe the recent unwanted addition of freshwater drum may also provide a food source for large game fish in the future. Young panfish and white bass are food sources for many game species. Emerald shiner, bluntnose minnow, and log-perch make up the diets for a variety of species.

Seasonal Movements

Walleye congregate below the Nekoosa Dam on the Wisconsin River from mid-March through April to spawn. Creek inlets that have adequate water flow will also attract spring walleye. A second migration of walleye to the Nekoosa Dams also occurs in late September and October. Better foraging is the primary reason for the second migration. White bass will be concentrated below the Nekoosa Dam during mid-May until the end of June.
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Fish Species

Bluegill
fish
8-20 in
Length Range
13 in
Length Range
2023
Surveyed
Abundance (CPUE)
Low
2023
Surveyed
Electro
Catch Method
5.8749
0Statewide Range849.0614

Petenwell Lake Bluegill abundance

Average range for similar lakes

Understanding Abundance

Abundance ratings are based on Catch Per Unit Effort (CPUE) measurements conducted by the MN DNR, and represent a snapshot of a species population at a given point in time.

Source: Minnesota Department of Natural Resources. Survey cadence may vary by state and water body.
Species Lengths
2023
May
2023
May
Trophy Potential
This lake has a history of supporting trophy sized bluegill based on past surveys.
Survey YearLargest Fish (in)
202310
20219
20209
20169
Brown trout
fish
12-13 in
Length Range
13 in
Length Range
2017
Surveyed
Abundance (CPUE)
Unknown
2017
Surveyed
NA
Catch Method
Understanding Abundance

Abundance ratings are based on Catch Per Unit Effort (CPUE) measurements conducted by the MN DNR, and represent a snapshot of a species population at a given point in time.

Source: Minnesota Department of Natural Resources. Survey cadence may vary by state and water body.
Species Lengths
2016
Apr
2017
Mar
Channel catfish
fish
17-43 in
Length Range
29 in
Length Range
2023
Surveyed
Abundance (CPUE)
Outlier
2023
Surveyed
Trapnet
Catch Method
0.3395
0Statewide Range0.1834

Petenwell Lake Channel catfish abundance

Average range for similar lakes

Understanding Abundance

Abundance ratings are based on Catch Per Unit Effort (CPUE) measurements conducted by the MN DNR, and represent a snapshot of a species population at a given point in time.

Source: Minnesota Department of Natural Resources. Survey cadence may vary by state and water body.
Species Lengths
2023
May
2023
Aug
Crappie
fish
17-43 in
Length Range
29 in
Length Range
2023
Surveyed
Abundance (CPUE)
Low
2023
Surveyed
Trapnet
Catch Method
0.0043
0Statewide Range4.214166666666666

Petenwell Lake Crappie abundance

Average range for similar lakes

Understanding Abundance

Abundance ratings are based on Catch Per Unit Effort (CPUE) measurements conducted by the MN DNR, and represent a snapshot of a species population at a given point in time.

Source: Minnesota Department of Natural Resources. Survey cadence may vary by state and water body.
Species Lengths
2023
May
2023
Aug
Trophy Potential
This lake has a history of supporting trophy sized crappie based on past surveys.
Survey YearLargest Fish (in)
202316
202214
202114
Flathead catfish
fish
17-43 in
Length Range
29 in
Length Range
2023
Surveyed
Abundance (CPUE)
Above Avg.
2023
Surveyed
Trapnet
Catch Method
Understanding Abundance

Abundance ratings are based on Catch Per Unit Effort (CPUE) measurements conducted by the MN DNR, and represent a snapshot of a species population at a given point in time.

Source: Minnesota Department of Natural Resources. Survey cadence may vary by state and water body.
Species Lengths
2020
Jul
2023
Aug
Trophy Potential
This lake has a history of supporting trophy sized flathead-catfish based on past surveys.
Survey YearLargest Fish (in)
202344
202244
201943
Largemouth bass
fish
5-10 in
Length Range
7 in
Length Range
2023
Surveyed
Abundance (CPUE)
Low
2023
Surveyed
Trapnet
Catch Method
0.0018
0Statewide Range0.09195

Petenwell Lake Largemouth bass abundance

Average range for similar lakes

Understanding Abundance

Abundance ratings are based on Catch Per Unit Effort (CPUE) measurements conducted by the MN DNR, and represent a snapshot of a species population at a given point in time.

Source: Minnesota Department of Natural Resources. Survey cadence may vary by state and water body.
Species Lengths
2016
Apr
2023
May
Muskellunge
fish
8-19 in
Length Range
12 in
Length Range
2024
Surveyed
Abundance (CPUE)
Low
2024
Surveyed
Electro
Catch Method
0.5173
0Statewide Range6.56125

Petenwell Lake Muskellunge abundance

Average range for similar lakes

Understanding Abundance

Abundance ratings are based on Catch Per Unit Effort (CPUE) measurements conducted by the MN DNR, and represent a snapshot of a species population at a given point in time.

Source: Minnesota Department of Natural Resources. Survey cadence may vary by state and water body.
Species Lengths
2024
Apr
2024
Oct
Trophy Potential
This lake has a history of supporting trophy sized muskellunge based on past surveys.
Survey YearLargest Fish (in)
202349
201649
Northern pike
fish
8-20 in
Length Range
13 in
Length Range
2023
Surveyed
Abundance (CPUE)
Low
2023
Surveyed
Electro
Catch Method
0.4633
0Statewide Range16.72075

Petenwell Lake Northern pike abundance

Average range for similar lakes

Understanding Abundance

Abundance ratings are based on Catch Per Unit Effort (CPUE) measurements conducted by the MN DNR, and represent a snapshot of a species population at a given point in time.

Source: Minnesota Department of Natural Resources. Survey cadence may vary by state and water body.
Species Lengths
2023
May
2023
May
Trophy Potential
This lake has a history of supporting trophy sized northern-pike based on past surveys.
Survey YearLargest Fish (in)
202343
202044
201638
Perch
fish
8-20 in
Length Range
13 in
Length Range
2023
Surveyed
Abundance (CPUE)
Below Avg.
2023
Surveyed
Trapnet
Catch Method
0.0677
0Statewide Range0.7271

Petenwell Lake Perch abundance

Average range for similar lakes

Understanding Abundance

Abundance ratings are based on Catch Per Unit Effort (CPUE) measurements conducted by the MN DNR, and represent a snapshot of a species population at a given point in time.

Source: Minnesota Department of Natural Resources. Survey cadence may vary by state and water body.
Species Lengths
2023
May
2023
May
Trophy Potential
This lake has a history of supporting trophy sized perch based on past surveys.
Survey YearLargest Fish (in)
202312
201612
Pumpkinseed
fish
8-20 in
Length Range
13 in
Length Range
2023
Surveyed
Abundance (CPUE)
Low
2023
Surveyed
Electro
Catch Method
0.4196
0Statewide Range84.67115

Petenwell Lake Pumpkinseed abundance

Average range for similar lakes

Understanding Abundance

Abundance ratings are based on Catch Per Unit Effort (CPUE) measurements conducted by the MN DNR, and represent a snapshot of a species population at a given point in time.

Source: Minnesota Department of Natural Resources. Survey cadence may vary by state and water body.
Species Lengths
2023
May
2023
May
Rock bass
fish
5-10 in
Length Range
7 in
Length Range
2023
Surveyed
Abundance (CPUE)
Low
2023
Surveyed
Trapnet
Catch Method
0.005
0Statewide Range1.625

Petenwell Lake Rock bass abundance

Average range for similar lakes

Understanding Abundance

Abundance ratings are based on Catch Per Unit Effort (CPUE) measurements conducted by the MN DNR, and represent a snapshot of a species population at a given point in time.

Source: Minnesota Department of Natural Resources. Survey cadence may vary by state and water body.
Species Lengths
2021
Oct
2023
May
Smallmouth bass
fish
8-20 in
Length Range
13 in
Length Range
2023
Surveyed
Abundance (CPUE)
High
2023
Surveyed
Electro
Catch Method
15.9833
0Statewide Range80.5292

Petenwell Lake Smallmouth bass abundance

Average range for similar lakes

Understanding Abundance

Abundance ratings are based on Catch Per Unit Effort (CPUE) measurements conducted by the MN DNR, and represent a snapshot of a species population at a given point in time.

Source: Minnesota Department of Natural Resources. Survey cadence may vary by state and water body.
Species Lengths
2023
May
2023
May
Trophy Potential
This lake has a history of supporting trophy sized smallmouth-bass based on past surveys.
Survey YearLargest Fish (in)
202319
201620
Sturgeon
fish
60-61 in
Length Range
61 in
Length Range
2024
Surveyed
Abundance (CPUE)
Unknown
2024
Surveyed
NA
Catch Method
Understanding Abundance

Abundance ratings are based on Catch Per Unit Effort (CPUE) measurements conducted by the MN DNR, and represent a snapshot of a species population at a given point in time.

Source: Minnesota Department of Natural Resources. Survey cadence may vary by state and water body.
Species Lengths
2023
May
2024
Apr
Walleye
fish
8-19 in
Length Range
12 in
Length Range
2024
Surveyed
Abundance (CPUE)
Outlier
2024
Surveyed
Electro
Catch Method
153.6472
0Statewide Range75.60845

Petenwell Lake Walleye abundance

Average range for similar lakes

Understanding Abundance

Abundance ratings are based on Catch Per Unit Effort (CPUE) measurements conducted by the MN DNR, and represent a snapshot of a species population at a given point in time.

Source: Minnesota Department of Natural Resources. Survey cadence may vary by state and water body.
Species Lengths
2023
Aug
2024
Oct
Trophy Potential
This lake has a history of supporting trophy sized walleye based on past surveys.
Survey YearLargest Fish (in)
202329
201628
White bass
fish
17-43 in
Length Range
29 in
Length Range
2023
Surveyed
Abundance (CPUE)
Low
2023
Surveyed
Trapnet
Catch Method
0.0007
0Statewide Range0.16945

Petenwell Lake White bass abundance

Average range for similar lakes

Understanding Abundance

Abundance ratings are based on Catch Per Unit Effort (CPUE) measurements conducted by the MN DNR, and represent a snapshot of a species population at a given point in time.

Source: Minnesota Department of Natural Resources. Survey cadence may vary by state and water body.
Species Lengths
2023
May
2023
Aug
Trophy Potential
This lake has a history of supporting trophy sized white-bass based on past surveys.
Survey YearLargest Fish (in)
201618