["District" defined.]

The word "district" as used in this act [73-8-1 to 73-8-60 NMSA 1978] shall be held to mean and include only the lands described in the official order establishing any drainage district, and the official plat thereof of record in the office of the county clerk as by this act hereinbefore provided and such other lands as may be subsequently included in any such district in accordance with the provisions of this act.