Tenney Locks are located on the eastern side of Lake Mendota in Madison, WI. They are used to allow boaters to travel between Lakes Mendota and Monona.   


Dimensions:
    Extends 383 feet west from the shore 
    Turns 105 degrees and extends 343 feet north
    Width = 25 feet
    Height = 13.9 feet
    The breakwater is surrounded by quarry stone adding to its porosity