Section 37.02.01.010 - DEFINITIONS01.Alteration. Any activity using mechanized equipment that moves or overturns gravel or earth.02.Board. The Idaho Water Resource Board.03.Hydropower Project. Any development that uses a flow of water as a source of electrical or mechanical power, or that regulates the flow of water for the purpose of generating electrical or mechanical power, including powerhouses, dams, water conduits, transmission lines, water impoundments, roads, and other appurtenant works and structures.04.Natural River. A waterway that possesses outstanding fish and wildlife, recreation, geologic or aesthetic values, is free of substantial existing man-made impoundments, dams or other structures, and has riparian areas that are largely undeveloped, although accessible in places by trails and roads.05.Recreational River. A waterway that possesses outstanding fish and wildlife, recreation, geologic or aesthetic values, and might include some man-made development within the waterway or within the riparian area of the waterway.06.Riparian Area. That area within one hundred (100) feet of the mean highwater mark of a waterway.07.Stream Bed. A natural water course of perceptible extent with definite bed and banks that confines and conducts the water of a waterway that lies below and between the ordinary high water mark on either side of that waterway.08.Waterway. A river, stream, creek, lake or spring, or a portion thereof, and does not include any tributary thereof.Idaho Admin. Code r. 37.02.01.010