Abstract
Abstract
The rain water harvesting is an ancient art depends on catch and hold the rainfall by different shapes that field invented , basing on tremendous changing of the spatial and temporal probability of the rainfall . Spatial Expert Support System (SESS) is prominent to give the appropriate experience for searching the best location to construct the rain water harvesting techniques giving it the general view of different data for study area and how it can be arranged , storage and to layout by accurate professional maps .
The geographic information system (GIS) ability makes this system integral by enter the data layers that concern of the data base and to layout it by general forms of the shape and concept. The programs (GLOBAL MAPPER V.11 ، ARCVIEW V.3.3 and ERDAS IMAGINE V. 11) are used to process the data base for a chosen study area called AL-Mlah basin valley northern of Iraq. And to prepare the engineering electronic map that can develop the actuality of the agriculture and irrigation in the study area .
