Feasibility of watershed management for the declining Isin watershed aquifer

Demand increasing in water resources in Iran has been caused to water exploitation and disturbing the ground water resources balance. In Hormozgan Province that is located in arid region of Iran, there is not balance between demand and supply of water resources. Isin Watershed that is covered 47793.5 ha area, located in the northern part of Persian Gulf. In this watershed, water supply depends on groundwater resource so has been faced to loss of groundwater level that this losing grows faster and faster. In this study, after collecting information about watershed management for isin watershed, identify and analysis of natural features, various states that may happen be with watershed management or without it, has been projected. Four scenarios developed for this purpose and analysis the results show that, if watershed management will be done in the isin watershed, the amounts of infiltrated water into the groundwater will be 1.5 times more than in which time that do not any watershed management. Accordingly, with implement the watershed management and artificial recharge operations, the average of rainfall infiltration into the groundwater will be 1.72 mcm per year in dry years and 6.63 mcm per year in wet years.