Iowa Code § 457A.8: Privately held easements.

A conservation easement may be held by a private, nonprofit organization for public benefit if the instrument granting the easement or the bylaws of the organization provide that the easement will be transferred either to a public body or another private, nonprofit organization upon the dissolution of the private, nonprofit organization. A conservation easement meeting these requirements acquired after July 1, 1984 is transferable and perpetual as provided in section 457A.2.