Idaho Code § 42-906: Amount and lien of rental or maintenance.

The amount to be paid by said party or parties for the delivery of said water, which amount may be fixed by contract, or may be as provided by law, is a first lien upon the land for the irrigation of which said water is furnished and delivered. But if the title to said tract of land is in the United States or the state of Idaho, then the said amount shall be a first lien upon any crop or crops which may be raised upon said tract of land, which said lien shall be recorded and collected as provided by law for other liens in this state. And any mortgage or other lien upon such tracts of land that may hereafter be given shall in all cases be subject to the lien for price of water as provided in this section.