California Code, Water Code - WAT § 1228.7

(a) A registrant may change the point of diversion or place of use by delivering to the board an amended registration form in accordance with Section 1228.3, including payment of the registration fee specified in Section 1525, except that the purpose of the use shall not be changed and the change shall not operate to the injury of any legal user of the water involved.

(b) A completed amended registration of water use continues in effect the priority of right as of the date of the original completed registration.

(c) All provisions of this article regarding appropriations made pursuant thereto, including, but not limited to, provisions regarding enforcement, are applicable to the appropriation as described in the completed amended registration, except that the conditions established by the board pursuant to Section 1228.6that are in effect at the time of completion of the amended registration shall supersede the conditions that were applicable to the original completed registration.