Levy is for continuous benefits only.

RCW 85.18.150, under Chapter 85.18 Levy for continuous benefits—Diking districts..

RCW 85.18.150

The dollar rate levy returns collected from time to time under this chapter are solely assessments for benefits received continuously by the protected properties, calculated in the manner specified in this chapter as a just and equitable way for all protected property to share the expense of such required protection.[ 1973 1st ex.s. c 195 s 118; 1951 c 45 s 16.]Notes:Severability—Effective dates and termination dates—Construction—1973 1st ex.s. c 195: See notes following RCW 84.52.043.