Idaho Code § 41-709: Irrigation district bonds.

An insurer may invest in the legally issued bonds, not delinquent as to principal or interest, of any solvent irrigation district created as provided by law in this state, or in any other state, whose water rights shall have been legally acquired and finally determined, and shall be fully adequate to supply sufficient water to properly irrigate all the land within such district, and which shall be adequately irrigating not less than thirty per cent (30%) of the lands within such irrigation district.