Investigating the Effect of Cloud Seeding Technique on Precipitation in Iran Basins in Water Year 2010-2011: A Case Study of Bakhtgan-Task Basin and Gavkhoni Basin

Several continual droughts in recent decades in our country has caused damage to agriculture and natural resources, particularly, water resources. The basins of Iran are affected by this problem and water scarcity has damaged them. Cloud seeding can be one of the ways to decrease the effect of hydrological drought and increase surface and ground water resources. This paper aims to investigate the effect of cloud seeding on precipitation of Gavkhoni basin and Tashk Bakhtegan basin. Thus, the months of January, February, December and November were selected as the months with the potential of precipitation for evaluation of cloud seeding. Historical regression statistical method was used to for investigate the effect of cloud seeding on precipitation of these basins. In order to detect the target and control areas Arc GIS software was used and statistical analysis was performed using SPSS software. The results of this study indicated that cloud seeding led to a 40% increase in precipitation of Gavkhoni basin and a 23.7% increase in that of tashk-Bakhtegan basin.