If the district directors determine that operation of the proposed watershed improvement district is administratively practicable and feasible, they shall declare the watershed improvement district to be organized and shall record the fact in their official minutes. Following such entry in their official minutes, the district directors shall certify the fact of the organization of the watershed improvement district to the Virginia Soil and Water Conservation Board, and shall furnish a copy of the certification to the clerk of each county or city in which any portion of the watershed improvement district is situated for recordation in the public land records of each such county or city. The watershed improvement district shall thereupon constitute a political subdivision of this Commonwealth.