(1) No permit shall be issued by the department of water resources of the state of Idaho, for the appropriation of water for power purposes, nor shall any such permit be assigned, transferred, mortgaged, sold or conveyed to any person, firm or corporation except in accordance with the provisions of this act.
(2) Water cannot be appropriated for hydropower development uses within or using existing man-made irrigation facilities without the permission of the owner thereof.
(3) When competing applications for a permit have been filed prior to the effective date of this act for the additional use for hydropower purposes that would utilize facilities that are owned or controlled by the holder of an existing water permit, license, decree, or established constitutional water usage, the director shall give preference to the application of the owner of the existing rights or his agent.