Iowa Admin. Code r. 571-49.2
"Department" means the department of natural resources.
"Meandered stream" means a lake or stream which at the time of the original government survey was so surveyed as to mark, plat and compute acreage of adjacent fractional sections.
"Motor vehicle" means a vehicle which is self-propelled, but not including vehicles known as trackless trolleys which are propelled by electric power obtained from overhead trolley wires and are not operated upon rails. A motor vehicle is not a watercraft as defined in Iowa Code section 462A.2(32).
"Navigable stream" means all streams which can support a vessel capable of carrying one or more persons during a total of a six-month period in one out of every ten years.
"Trout stream" means a cold-water stream which, by natural or artificial methods, supports trout fish species.
Iowa Admin. Code r. 571-49.2