Water resources management of Hirmand River Basin in agricultural and household sectors

Supply and demand management of Hirmand water resources is one of the most important problems facing by policy makers and they will not be able to manage this sector properly without specifying the future prospects of the Hirmand Area. The main objective of the research is to allocation of water resources in the Hirmand Area by using dynamic optimization models in agricultural and household sectors. The method of this research is based on the applied scientific method. The required statistics and information are obtained by the library method. In this research, the water demand functions in the agricultural and household sectors are achieved. The general objective function for determining the allocation is estimated by using EVIEWS and GAMS softwares. The results showed that for agricultural sector, water demand is inversely related to water price, if the water price increases by 1%, the product will have a negative value decrease by 4.4% respectively. Moreover, since in this model the demand function for water is only a function of the price, the return to the scale is decreasing and Iso Quant Curve in the agricultural sector has a negative technical substitution rate in all aquatic conditions. In household demand, the results showed that with increase in water price, consumption decreases and rise of price is a necessary condition for reducing consumption, but is not sufficient. The average consumption based on the current trend is 12.42 M3 per month for each household. The reaction in the amount of demand change versus the change in the number of stormy days is positive and equal to 0.39.

Keywords:

Sistan , stormy days , Social welfare