Wash. Rev. Code § 89.08.170
If the secretary of state finds that the name of the proposed district is such as will not be confused with that of any other district, he or she shall enter the application and statement in his or her records. If he or she finds the name may be confusing, he or she shall certify that fact to the commission, which shall submit a new name free from such objections, and he or she shall enter the application and statement as modified, in his or her records. Thereupon the district shall be considered organized into a body corporate.
The secretary of state shall then issue to the supervisors a certificate of organization of the district under the seal of the state, and shall record the certificate in his or her office. Proof of the issuance of the certificate shall be evidence of the establishment of the district, and a certified copy of the certificate shall be admissible as evidence and shall be proof of the filing and contents thereof. The name of a conservation district may be changed upon recommendation by the supervisors of a district and approval by the state conservation commission and the secretary of state. The new name shall be recorded by the secretary of state following the same general procedure as for the previous name.
RCW 89.08.170