A petition shall: state that a specific area of land is subject to overflow or is too wet for cultivation; describe the area’s location; describe how draining, ditching, or leveeing the area, changing the natural watercourse, or other drainage projects benefit the public or promote the public health, safety, or welfare; and specify, to the extent practicable, the starting point, route, and terminus and any lateral branches of the proposed drainage project. A petition is valid only if signed by the majority of the resident landowners in the proposed drainage district or the owners of three–fifths of the land that will be affected by or assessed to finance the proposed drainage project.