ABSTRACT
Water and the Environment: Innovative Issues in Irrigation and Drainage. Edited by Luis S. Pereira and John W. Gowing. Published in 1998 by E & FN Spon. ISBN 0 419 23710 0
suitable areas for water harvesting. For medium range sizes of areas, the use of aeroplanes equipped with photographic equipment could be suitable and for even larger areas the application of remote sensing by using satellite images could be the most relevant means of identification of areas suitable for certain techniques of water harvesting. For any of the above mentioned techniques, the application of a suitable GIS (Geographic Information System) is indispensable. It has to be mentioned however, that the application even of the best GIS will not guarantee the success of any water harvesting scheme, as a number of external factors such as water and land rights, macro-economic conditions, traditional rules and believes can hardly be incorporated into such a GIS, but might influence the development of the water harvesting scheme.
