Wash. Rev. Code § 90.40.050
When the notice provided for in RCW 90.40.030 shall be given to the commissioner of public lands the proper officers of the United States may file with the said commissioner a list of lands (including in the term "lands" as here used, the beds and shores of any lake, river, stream, or other waters) owned by the state, over or upon which the United States may require rights-of-way for canals, ditches or laterals or sites for reservoirs and structures therefor or appurtenant thereto, or such additional rights-of-way and quantity of land as may be required for the operation and maintenance of the completed works for the irrigation project contemplated in such notice, and the filing of such list shall constitute a reservation from the sale or other disposal by the state of such lands so described, which reservation shall, upon the completion of such works and upon the United States by its proper officers filing with the commissioner of public lands of the state a description of such lands by metes and bounds or other definite description, ripen into a grant from the state to the United States. The state, in the disposal of lands granted from the United States to the state, shall reserve for the United States rights-of-way for ditches, canals, laterals, telephone and transmission lines which may be required by the United States for the construction, operation and maintenance of irrigation works.
RCW 90.40.050
Reviser's note: See note following RCW 90.40.030.