Drought is one of the natural disasters which annually cause to millions of dollars damage toagricultural communities around the world. In recent decades among the natural disasters,frequency of drought in terms of drought intensity, duration, total affected area, life andeconomic losses and social impacts on community, had more effect on human populationsthan other natural disasters. The most important effect and consequences of drought is watershortages for various purposes like agriculture. Qanats (aqueducts) construction and use ofthem is an ancient method for supplying water in Iran. In this way, without spending energyand only through the force of gravity, a part of required water of agriculture, drinking waterand residential area has been supplied since long time ago. Using this method of watersupply after development of equipments for drilling of semi-deep and deep wells is reduced,and in some parts of the country construction of new Qanats has stopped. Uncontrolled withdrawal of groundwater by excessive exploitation of wells with increasing of wellsnumber and lack of natural recharge, for various reasons like changing of land use and climate changes, cause to decreasing of Qanats water yield or even dried them. So, thepurpose of this study is analyzing the effects of watershed management operations likeartificial recharge to increase the discharge of Qanats using flood control. In this study, the quantitative and qualitative data of Qanats water evaluated where artificialrecharge of aquifers has done using trend analysis of hydrological behavior changes in selected Qanats and results of changes in water yield of Gambleh and Noh Abad Qanats,before and after of artificial recharge, including construction of recharge pools and floodspreading, during 1995 to 2010 showed that discharge of Qanats from 5.6 and 5.8 liters persecond in 1995 (before artificial recharge), increased to 12.5 and 8.3 liters per second in2010 respectively which had an effective role in reducing of drought effects in study area.
کلید واژگان :Artificial Recharge, Drought, Qanat (aqueduct), Watershed management
ارزش ریالی : 500000 ریال
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