(1) Where the proposed district is in more than one county, the county board of the county within which the largest portion, by valuation, of the proposed district lies shall have jurisdiction under ss. 33.24 to 33.28.
(2) The county within which the largest portion, by valuation, of a district lies shall have jurisdiction on motions for attachment under s. 33.33 (2)
(b) and on petitions for dissolution under s. 33.35.