ABSTRACT
The Food and Agriculture Organization of the United Nations (FAO) defines a watershed as: “. . . a topographically delineated area that is drained by a stream system, i.e. the total land area that is drained to some point on a stream or river” (Sheng 1990: 3). This ecological system can be considered an essential source of water, energy and other natural resources for modern agricultural, industrial and urban development (Hofer and Warren 2007: 1).
