Modeling water supply and demand for effective water management in the Sana'a basin in Yemen
Other Title(s)
نمذجة العرض و الطلب للإدارة الفعالة للمياه في حوض صنعاء في اليمن
Joint Authors
Mubarak, Zamzam Abduh Yahya
al-Darwish, Wail
Source
Journal of Science and Technology
Issue
Vol. 25, Issue 2 (31 Dec. 2020), pp.15-44, 30 p.
Publisher
University of Science and Technology Faculty of Computing and Engineering
Publication Date
2020-12-31
Country of Publication
Yemen
No. of Pages
30
Main Subjects
Engineering & Technology Sciences (Multidisciplinary)
Abstract EN
Modelling system is the core for the evaluation of water related sectors in the Sana’a Basin.
The numerical modelling (MODFLOW) has emerged as an effective tool for managing groundwater resources and predicting future responses, especially when dealing with complex aquifers systems and heterogeneous formations.
MODFLOW model has been used herein as a management tool for the targeted sub- basins in Sana’a Basin such (Wadi Bani Hawat, Wadi Dhahr & Al-Ghayl, Wadi Hamdan & As Sabrah and Wadi Ghayman); the most important groundwater resources for domestic and agricultural sectors in Sana’a basin.
A conceptual model was designed according to the actual groundwater dynamic flow system in the 2010 Hydrosult Sana’a Basin Model.
Also, the governing partial parabolic differential equation was defined, including the vertical conductivity flow between the aquifers.
Total groundwater abstraction values from previous studies were compiled, including the 2015 well inventory data of National Water Resources Authority –Sana’a Basin.In this study, three simulations of groundwater development scenarios were distinguished.
The first scenario is applied for evaluation of the present status and till 2025.
The second and the third scenarios are focused on the effect of water augmentation i.e.
decrease the present rate of groundwater abstraction to 30% and 50% respectively, with considering the highly intervention of IWRM structure of Sana’a basin on the on-going activities related to change land use, change crop pattern, value chain, marketing, modern irrigation techniques, water harvesting techniques, treated waste reuse etc….
Also other Modules were used in calculating the groundwater demand, deficit and unemployment in agricultural sector in Sana’a Basin.
Scenario 3 gives a remarkable improvement of the water resources system in the four sub-basins within a reasonable period (in the year 2025), thus, it will keep the water resources sustainability; but the unemployment in agricultural sector in Sana’a Basin in scenario 3 will be is the highest value if comparing with the other two scenarios.
It will reach in 2025 under scenario 2 and scenario 3 to 10432 and 14762 respectively while in scenario 1 the unemployment will disappeared in 2025.
This study is recommended that irrigation systems should be improved, usage of harvesting water methods and treated waste water reuse for agriculture to avoid the depletion of Sana’ Basin aquifer and to reduce unemployment in agricultural sector in Sana’a Basin.
American Psychological Association (APA)
Mubarak, Zamzam Abduh Yahya& al-Darwish, Wail. 2020. Modeling water supply and demand for effective water management in the Sana'a basin in Yemen. Journal of Science and Technology،Vol. 25, no. 2, pp.15-44.
https://search.emarefa.net/detail/BIM-1314575
Modern Language Association (MLA)
Mubarak, Zamzam Abduh Yahya& al-Darwish, Wail. Modeling water supply and demand for effective water management in the Sana'a basin in Yemen. Journal of Science and Technology Vol. 25, no. 2 (2020), pp.15-44.
https://search.emarefa.net/detail/BIM-1314575
American Medical Association (AMA)
Mubarak, Zamzam Abduh Yahya& al-Darwish, Wail. Modeling water supply and demand for effective water management in the Sana'a basin in Yemen. Journal of Science and Technology. 2020. Vol. 25, no. 2, pp.15-44.
https://search.emarefa.net/detail/BIM-1314575
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 43-44
Record ID
BIM-1314575