Iowa Code § 468.380: Construction near levee prohibited.

No person, firm or corporation shall hereafter erect, alter, or maintain any building or other structure, except necessary public utility structures, or construct, alter, or maintain any ditch, or remove any earth within three hundred feet of the center line of any levee maintained by a drainage or levee district with pumping stations without first securing permission to so do from the governing board of said drainage or levee district with pumping stations. Such permission may be granted at any regular meeting thereof, and after written application is made therefor upon the form prescribed by said governing board.