Idaho Code § 42-609
A watermaster shall have power, in case of emergency, with the approval of the director of the department of water resources, to employ suitable assistants in addition to those who may have been approved at the annual meeting of the water users of the district to aid the watermaster in the discharge of the watermaster's duties, who shall take the same oath as the watermaster, and shall obey the watermaster's instructions, and shall be entitled to a salary as set by the water users in their adopted budget and approved by the director of the department of water resources, or if no budget is adopted, then as set by the director of the department of water resources, to be paid in the same manner as provided for the payment of watermasters.
Idaho Code § 42-609