There hereby is adopted as the official map identifying an area of city impact within the unincorporated area of Bingham County, Idaho, that certain map, as amended from time to time, by reference made a part hereof as though set forth herein at length. The area identified on said map as being within the impact area shall henceforth be deemed to be the impact area of the city, as contemplated by Idaho Code section 67-6526. (2003 Code § 2-03-08)