Chapter V: - Sediment Control Methods Introduction and Watershed Area

The varying implications regarding the control of sediments to individuals working in different fields is discussed. The subject is considered in two general areas, the land surface and the fluvial channels and associated water bodies. Sediment control on land is discussed in terms of watershed areas, and includes considerations of sheet erosion and the rills gullies or other fluvial channels included wholly therein. Larger channels are discussed separately in terms of natural and artificial channels, since control of the former is restricted generally by its existing form and the design of the latter is permitted many more degrees of freedom. Controls in reservoirs and harbors are treated separately, since the concepts or purposes differ measurably. The prevention of the erosion of sediment particles from the land or from fluvial channels and the controls applicable in fluvial channels or in the lakes, reservoirs, estuaries, or bays into which they flow are also explored.