“…Although water-harvesting has been practiced in different parts of the world for thousands of years (Bruins et al, 1986), it has predominantly been used in dry areas to collect and supplement scarce water resources (Lavee et al, 1997). Past research on harvesting of rain water has been reported for several tropical countries (Ngigi et al, 2005a,b;Handia et al, 2003;Kronen, 1994;Carter and Miller, 1991;Verma and Sarma, 1990;Grewal et al, 1989;Ray, 1986). Rain water remains relatively inexpensive in many dry regions of Asia, Africa, and America and often is the only available source of water for agricultural purposes (Bruins et al, 1986).…”