Flood Spreading Site Selection Using Spatial Multi Criteria Evaluation (SMCE) (Case study: Padva Area in Bam City)

Flood spreading on the conical sections that located at the existing openings flood way in the aquiferous area of dry and semi dry zone with purpose of savings floodwater is a suitable way for utility of dry rivers, seasoning river(ephemeral) and extra flow of perennial rivers. Identification of suitable location for flood spreading and penetrating it in the undergrounds water is one of the most important steps in these kinds of projects. The purpose of this research is finding the location of flood spreading in the Padva aquiferous domain for preserving water subterranean canal, well and spring at the dry zone with the multi critical sitting evaluation techniques for overcoming with drought crisis. Therefore, Padva aquiferous domain in the west Bam with 7692-hectare area was selected. In this research, the spatial economical factors such as; vicinity to the road, fault, subterranean canal, well and river with these factors are analyzed with new techniques: gradient, geology, geomorphology and lands efficiency, so that in the multi_critical sitting evaluation way, these factor with the phases value are standardized. Weight of factors is also identifying with various ways such as, ranking. At the next step combination of layers with designing of tree shaped was done in the ILWIS software and the result was: index plan combined with phase value from 0 to 1 as a result suitable area of flood spreading with the value around 1 is equivalent 5626/58 hectare and include 75/64 percent of domain measurement. For elevation this way, the index plan combined with design plan flood spreading carried out and gave in the cutting zone which this had suitable overlapping with carried out flood spreading plan, therefore the usage of above way for exact and fast identification of flood spreading for similar zone in the country is advised.