Your search found 4 records
1 Amer, S. A.; Keefer, T. O.; Weltz, M. A.; Goodrich, D. C.; Bach, L. B. 1994. Soil moisture sensors for continuous monitoring. Water Resources Bulletin, 30(1):69-83.
(Location: IWMI-HQ Call no: PER Record No: H014279)
2 Schmugge, T. J.; Jackson, T. J.; Kustas, W. P.; Roberts, R.; Parry, R.; Goodrich, D. C.; Amer, S. A.; Weltz, M. A. 1994. Push broom microwave radiometer observations of surface soil moisture in Monsoon '90. Water Resources Research, 30(5):1321-1327.
(Location: IWMI-HQ Call no: PER Record No: H015978)
3 Habteyes, B. G.; El-bardisy, H. A. E. H.; Amer, S. A.; Schneider, V. R.; Ward, F. A. 2015. Mutually beneficial and sustainable management of Ethiopian and Egyptian dams in the Nile Basin. Journal of Hydrology, 529:1235-1246. [doi: https://doi.org/10.1016/j.jhydrol.2015.09.017]
Water management ; Dams ; Sustainability ; Water resources ; International waters ; Irrigated farming ; Water use ; Equity ; Riparian zones ; Water supply ; Reservoir storage ; Models ; Energy generation ; Water power ; Rivers ; Stream flow ; Economic value / Ethiopia / Egypt / Sudan / Nile Basin / High Aswan Dam / Grand Ethiopian Renaissance Dam
(Location: IWMI HQ Call no: e-copy only Record No: H047411)
(1.21 MB)
Ongoing pressures from population growth, recurrent drought, climate, urbanization and industrialization in the Nile Basin raise the importance of finding viable measures to adapt to these stresses. Four tributaries of the Eastern Nile Basin contribute to supplies: the Blue Nile (56%), White Nile-Albert (14%), Atbara (15%) and Sobat (15%). Despite much peer reviewed work addressing conflicts on the Nile, none to date has quantitatively examined opportunities for discovering benefit sharing measures that could protect negative impacts on downstream water users resulting from new upstream water storage developments. The contribution of this paper is to examine the potential for mutually beneficial and sustainable benefit sharing measures from the development and operation of the Grand Ethiopian Renaissance Dam while protecting baseline flows to the downstream countries including flows into the Egyptian High Aswan Dam. An integrated approach is formulated to bring the hydrology, economics and institutions of the region into a unified framework for policy analysis. A dynamic optimization model is developed and applied to identify the opportunities for Pareto Improving measures to operate these two dams for the four Eastern Nile Basin countries: Ethiopia, South Sudan, Sudan, and Egypt. Results indicate a possibility for one country to be better off (Ethiopia) and no country to be worse off from a managed operation of these two storage facilities. Still, despite the optimism of our results, considerable diplomatic negotiation among the four riparians will be required to turn potential gains into actual welfare improvements.
4 Funk, B.; Amer, S. A.; Ward, F. A. 2023. Sustainable aquifer management for food security. Agricultural Water Management, 281:108073. (Online first) [doi: https://doi.org/10.1016/j.agwat.2022.108073]
Aquifers ; Food security ; Desalination ; Irrigated farming ; Irrigation ; Freshwater ; Groundwater ; Pumping ; Crops ; Water supply ; Evapotranspiration ; Surface water ; Economic development / Kenya / Lodwar / Lotikipi / Merti
(Location: IWMI HQ Call no: e-copy only Record No: H051795)
https://www.sciencedirect.com/science/article/pii/S0378377422006205/pdfft?md5=f28b83fc76b50b22b296158dade0a9fc&pid=1-s2.0-S0378377422006205-main.pdf
https://vlibrary.iwmi.org/pdf/H051795.pdf
https://vlibrary.iwmi.org/pdf/H051795.pdf
(1.55 MB) (1.55 MB)
In aquifer-dependent regions, balancing aquifer protection, desalination, economic development, agricultural irrigation, and food security can be better managed through discovery and development of sources of sustainable groundwater pumping. Aquifer desalination for irrigation to protect food security can mitigate pressure on local freshwater aquifers. Despite its importance, little peer reviewed work to date has identified the economic capacity to pay for aquifer desalination for irrigation to mitigate freshwater aquifer drawdown. The novel contribution of this work is the development and application of an innovative method to assess the economic capacity to pay for aquifer desalination for irrigation for a recently discovered large saline aquifer. It develops an original framework to assess the capacity to pay for aquifer desalination, the results of which can help guide policymakers on efficient and sustainable pumping approaches across users, aquifers, and time periods. A mathematical programming model is developed to economically analyze the 200 billion cubic meter Lotikipi Aquifer, discovered in 2013 in northern Kenya using modern remote sensing methods. While initial pumping of the Lotikipi Aquifer was halted due to high groundwater salinity levels, interest remains strong in assessing the economic capacity to pay for groundwater desalination because of its potential role in protecting regional food security generated by aquifer pumping for irrigation. The model is formulated by calibrating optimized pumping patterns in two existing freshwater aquifers to replicate observed historical pumping levels. Based on that exercise, a second model is developed to identify a least cost set of pumping restrictions that return each of three regional aquifers to starting conditions over a seven-year time period. A third model extends the second by adding a constraint of a minimum required level of food grain security supported by irrigation pumping from the aquifer system. Results show that the economic capacity to pay for aquifer desalination for irrigated agriculture lies in the range of $0.08 - $0.18 USD per cubic meter under current economic conditions and desalination technologies available. While this economic capacity to pay is lower than its current cost in most places, the future could be more optimistic. Advances in desalination technology, higher crop prices, technical advance in agriculture, and development of drought-resistant crops can all contribute to a future capacity to economically justify the expense of desalination.
Powered by DB/Text WebPublisher, from
