RCW 90.28.040Limitation on number of irrigation ditches across land.No tract or parcel of improved or occupied land in this state shall, without the written consent of the owner thereof, be subjected to the burden of two or more irrigating ditches constructed for the purpose of conveying water through said property to lands adjoining or beyond the same, when the same object can feasibly and practicably be attained by uniting and conveying all the water necessary to be conveyed through such property in one ditch.[ 1890 p 717 s 39; RRS s 7401.]
Washington Legal Code