California Code, Public Utilities Code - PUC § 861

(a) As used in this section, “special law water district” means the Santa Clara Valley Water District and the Yuba-Bear River Basin Authority and, if created by an uncodified special law, any of the following: a county flood control district, a county flood control and water district, a county flood control and water conservation district, a county water conservation and flood control district, or a county water agency.

(b) Whenever by court order or judgment in an eminent domain proceeding or by agreement a special law water district is required to relocate any improvements of a public utility, if the special law water district and the public utility fail to agree as to the character or location of the new improvements to be relocated by the special law water district, the character and location of such new improvements and any other controversy relating thereto shall be submitted to and determined by the Public Utilities Commission in the manner prescribed in Chapter 6 (commencing with Section 1201).