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:: Volume 5, Issue 4 (2-2018) ::
2018, 5(4): 15-24 Back to browse issues page
Analysis of changes in groundwater resources in relation with instability of water resource in Zayandeh-rud Basin
Saeed Salehian * , Rahmatollah Monshizadeh
Rural Geography and Planning, Shahid Beheshti University
Abstract:   (3366 Views)
Abstract
Zayandeh-rud Basin is one of the most sensitive basins in Iran, politically, socially and economically. In the last two decades, the Zayandeh-rud basin has suffered from water stress, with about three-fifths of the length of the river in the middle and lower parts facing instability of water resources which have made those sections of the river seasonal. Due to the river water drying, water allocation to agricultural sector has been difficult, as water has flowed in the river only 5 times in the last decade, each time for few month. The closed condition and generative property of the Zayandeh-rud basin is such that the rate of exploitation of groundwater affects the occurrence or intensification of water instability in the basin. In this research, studied groundwater resources (Qanat, well) and springs in Zayandeh-rud basin are studied and compared during 2006 and 2011, two years in which a census was held. The results of the study show that after water resource instability, farmers tried to compensate for water reduction through well drilling and underground water utilization in order to continue their activities. This can be seen in the increase in the number of wells from the middle parts of the basin to the end of the river. In 10 years (2001-2011), about 9,000 wells were drilled to compensate for lack of water in the Zayandeh­­­­­-rud basin and during this time, the average groundwater table level has fallen by an average of 5 meters. In addition, during this period, the qanats in Zayandeh-rud basin have either dried or showed reduced output. Similarly, the number of springs reduced due to climatic causes. Increased exploitation of underground aquifers has exacerbated the unstable condition of water and drought in the basin.
Keywords: Groundwater resources, Wells, Qanats, Springs, Zayandeh-Rud Basin
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Type of Study: Research | Subject: Special
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Salehian S, Monshizadeh R. Analysis of changes in groundwater resources in relation with instability of water resource in Zayandeh-rud Basin. Journal of Rainwater Catchment Systems 2018; 5 (4) :15-24
URL: http://jircsa.ir/article-1-301-en.html


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Volume 5, Issue 4 (2-2018) Back to browse issues page
مجله علمی سامانه های سطوح آبگیر باران Iranian Journal of Rainwater Catchment Systems
تکمیل و ارسال فرم تعارض منافع
نویسنده گرامی ، پس از ارسال مقاله ، جهت دریافت فرم، لطفا بر روی کلمه فرم تعارض منافع کلیک نمایید و پس از تکمیل، در فایل های پیوست مقاله قرار دهید.
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