The Handbook of Iowa Boating Laws and Responsibilities
The Official Boating Handbook of the Iowa Department of Natural Resources - Web Version
Table of Contents
It is illegal to dump refuse, garbage, or plastics into any state or federally controlled waters. Store trash in a container on board, and place it in a proper receptacle on shore.
If boating on federally controlled waters and your vessel is 26 feet or longer, you must display a Garbage Disposal Placard that is at least 4 x 9 inches and notifies passengers and crew about discharge restrictions.