Milwaukee County

Humboldt Park

Address: 3000 S Howell Ave Milwaukee, WI 53207
Has a great pier to fish from along with some open spots along the Urban Pond.
Learn 2 Fish With Us held a fishing program here and caught many bluegill, bullhead and crappie.
Utilized a bobber set at 2 feet with a worm.

Washington Park:

Address: 1859 N. 40 St. Milwaukee, WI 53208
Has a great area to fish from along Urban Ecology building.
Learn 2 Fish With Us held a fishing program here and caught many perch and bullheads.
Utilized a bobber set at 2 feet with a worm.

Jackson Park:

Address: 3500 W Forest Home Ave, Milwaukee, WI 53215
Has a lot of area to fish from. 
The pond is a bit weedy.
Learn 2 Fish With Us held a fishing program here and caught many small bluegill and bullheads.
Utilized a bobber set at 2 feet with a worm.

Lakeshore State Park:

Address: 500 N Harbor Dr, Milwaukee, WI 53202
Parking can be difficult. 
Park has some piers but can be a long walk for some. 
Did do some fishing from here and caught gobbies and a Largemouth Bass.
Utilized a bobber set at 3 and 5 feet with a worm.