Idaho Code § 42-404
The department of water resources shall issue a license in accordance with the laws of the state of Idaho relative to the issuance of license under a permit, upon receipt of such proof as will satisfy the department as to application of the waters to beneficial use, and may as a condition of granting any such license require a certificate from the officer or official mentioned in section 42-401, to the effect that the proper public records of such sister state show that beneficial use has been made of the waters sought to be appropriated under said permit, said certificate to show the extent of such use in second feet. If such use is for irrigation, such certificate shall give a description by legal subdivisions of the land which is irrigated by such water. If such use is for power purposes such certificate shall describe the location of the point of use.
Idaho Code § 42-404