Volume 10, Issue 2 (Autumn & Winter 2024)
KJES 2024, 10(2): 329-343 |
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Sudegi P, Bagheri R. Determining safe groundwater yield in arid regions of Iran (case study: Davarzan aquifer). KJES 2024; 10 (2) :329-343
URL: http://gnf.khu.ac.ir/article-1-2918-en.html
URL: http://gnf.khu.ac.ir/article-1-2918-en.html
1- Shahrood University of Technology, Shahrood , sudegi@du.ac.ir
2- Shahrood University of Technology, Shahrood
2- Shahrood University of Technology, Shahrood
Abstract: (239 Views)
Safe yield is the amount of water that can be extracted from an aquifer on a sustainable economic basis, considering existing legal rights, without causing significant changes in the quantity and quality of groundwater or creating other adverse effects. The Davarzan alluvial aquifer, covering an area of 703 square kilometers, is the westernmost aquifer in Khorasan Razavi Province, bordered by an ophiolite complex to the north and a salt flat to the south. Continuous groundwater extraction over the years has led to an annual water level decline of 0.36 meters, reducing the accessible and extractable water reserves in this area. Based on groundwater modeling, the safe yield, according to the Hill method, is estimated at 64.3 million cubic meters per year. This yield is 18.3% less than the current average extraction and is considered the maximum safe yield for the aquifer. Calculations estimate the renewable storage in the Davarzan aquifer at approximately 49 million cubic meters per year. Therefore, continuing the current extraction trend, which causes an annual reduction of about 13 million cubic meters, will result in continued groundwater level decline and eventual aquifer depletion in the coming years.
Type of Study: Original Research |
Subject:
Geohydrology
Received: 2024/10/24 | Accepted: 2024/11/27 | Published: 2025/01/4
Received: 2024/10/24 | Accepted: 2024/11/27 | Published: 2025/01/4
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