Iowa Code § 321I.5: Nonresident user permits.

1. A nonresident wishing to operate an all-terrain vehicle, other than an all-terrain vehicle registered pursuant to this chapter, on public land, public ice, or a designated riding trail of this state shall obtain a user permit from the department. A user permit shall be issued for use on only one all-terrain vehicle and is not transferable. A user permit shall be valid for the calendar year or time period specified in the permit.

2. A county recorder or a license agent designated by the director pursuant to section 483A.11 may issue user permits. The fee for a user permit shall be fifteen dollars plus an administrative fee established by the commission. A county recorder or a license agent shall retain a writing fee from the sale of each user permit as provided in section 321I.29.