Your search found 6 records
1 Forkuor, G.; McCartney, Matthew; Amisigo, B.. 2011. Evaluating the implications of future water resource development under current and projected climate in the Volta basin. Paper presented at the 3rd Ghana Water Forum, Accra, Ghana, 5-7 September 2011. 7p.
Water resources development ; Climate change ; River basins ; Water power ; Irrigation schemes / Burkina Faso / Ghana / Volta Basin
(Location: IWMI HQ Call no: e-copy only Record No: H044351)
http://ghanawaterforum.files.wordpress.com/2011/09/forkuor-g-final.doc
https://vlibrary.iwmi.org/pdf/H044351.pdf
https://vlibrary.iwmi.org/pdf/H044351.pdf
(1.45 MB)
This study combines climate change (CC), hydrological and water resource evaluation models to assess the impact of one downscaled mid-range CC scenario (A1B) on the performance of existing and planned irrigation and hydropower schemes in the Volta basin. The models were run (1983-2100) to simulate the CC scenario in combination with three development scenarios, each reflecting different levels of water resource development in the basin. Results indicate a general trend of declining rainfall and increasing potential evapotranspiration in the basin. This trend was found to have caused: i) a significant reduction in flows at key stream gauge locations; ii) an increase in average basin-wide per hectare irrigation requirement and iii) a significant reduction in the percentage of the potential hydropower that could be generated in the basin. This has the tendency to undermine the economic development of the riparian countries unless due consideration is given to these impacts and suitable adaptation measures introduced.
2 McCartney, Matthew; Forkuor, Gerald; Sood, Aditya; Amisigo, B.; Hattermann, F.; Muthuwatta, Lal. 2012. The water resource implications of changing climate in the Volta River Basin [Africa]. Colombo, Sri Lanka: International Water Management Institute (IWMI). 33p. (IWMI Research Report 146) [doi: https://doi.org/10.5337/2012.219]
River basins ; Climate change ; Water resources development ; Reservoirs ; Water demand ; Temperature ; Rain ; Evapotranspiration ; Hydrology ; Flow discharge ; Groundwater recharge ; Surface water ; Water storage ; Simulation models ; Water power ; Irrigation schemes ; Irrigation water ; Water demand ; Livestock / Africa. / Volta River Basin
(Location: IWMI HQ Call no: IWMI Record No: H045520)
(1.99MB)
The Volta River is one of the major rivers in Africa. In this study, a dynamic regional climate model (CCLM), a hydrological model (SWAT) and a water resource model (WEAP) were used to provide an assessment of one downscaled ‘middle impact’ climate change scenario on the performance of existing and planned irrigation and hydropower schemes. The results indicate that, by the middle of the twenty-first century, altered climate is likely to undermine the technical performance of existing and planned reservoirs, which will, in turn, affect development outcomes. Future water resources development in the basin requires interventions that bolster resilience and water security. Much more systematic planning of water storage, greater cooperation between the riparian states and consideration of innovative approaches to water storage are needed.
3 Mul, Marloes; Obuobie, E.; Appoh, Richard; Kankam-Yeboah, K.; Bekoe-Obeng, E.; Amisigo, B.; Logah, F. Y.; Ghansah, Benjamin; McCartney, Matthew. 2015. Water resources assessment of the Volta River Basin. Colombo, Sri Lanka: International Water Management Institute (IWMI) 78p. (IWMI Working Paper 166) [doi: https://doi.org/10.5337/2015.220]
Water resources ; Environmental impact assessment ; River basins ; International waters ; Water management ; Water governance ; Water quality ; Water use ; Water demand ; Water power ; Water availability ; Ecosystem services ; Natural resources ; Infrastructure ; Wetlands ; Lakes ; Dams ; Policy making ; Strategies ; Livestock ; Fishing ; Industry ; Geology ; Soils ; Sedimentation ; Land use ; Hydrology ; Energy generation ; Riparian zones ; Institutions ; Economic aspects / Ghana / Burkina Faso / Volta River Basin
(Location: IWMI HQ Call no: IWMI Record No: H047413)
(2 MB)
The ‘WISE-UP to climate’ project aims to demonstrate the value of natural infrastructure as a ‘nature-based solution’ for climate change adaptation and sustainable development. Within the Volta River Basin, both natural and built infrastructure provide livelihood benefits for people. Understanding the interrelationships between the two types of infrastructure is a prerequisite for sustainable water resources development and management. This is particularly true as pressures on water resources intensify and the impacts of climate change increase. This report provides an overview of the biophysical characteristics, ecosystem services and links to livelihoods within the basin.
4 Mul, Marloes; Obuobie, E.; Appoh, Richard; Kankam-Yeboah, K.; Bekoe-Obeng, E.; Amisigo, B.; Logah, F. Y.; Ghansah, Benjamin; McCartney, Matthew. 2015. Evaluation des ressources en eau du bassin de la Volta. In French. [Water resources assessment of the Volta River Basin]. Colombo, Sri Lanka: International Water Management Institute (IWMI) 84p. (Also in English) (IWMI Working Paper 166/Document de travail IWMI 166) [doi: https://doi.org/10.5337/2016.201]
Water resources ; Environmental impact assessment ; River basins ; International waters ; Water management ; Water governance ; Water quality ; Water use ; Water demand ; Water power ; Water availability ; Ecosystem services ; Natural resources ; Infrastructure ; Wetlands ; Lakes ; Dams ; Policy making ; Strategies ; Livestock ; Fishing ; Industry ; Geology ; Soils ; Sedimentation ; Land use ; Hydrology ; Energy generation ; Riparian zones ; Institutions ; Economic aspects / Ghana / Burkina Faso / Volta River Basin
(Location: IWMI HQ Call no: IWMI Record No: H047580)
(24 KB)
Le projet « WISE UP to climate » vise a demontrer l'utilite des infrastructures naturelles comme une « solution basee sur la nature » pour l'adaptation au changement climatique et le developpement durable. Dans le bassin de la Volta, les infrastructures naturelles, comme les construites, offrent des benefices pour la subsistance des personnes. Comprendre les interrelations entre ces deux types d'infrastructures est une condition indispensable a une gestion et un developpement durables des ressources en eau. Cela est particulierement vrai dans un contexte ou les pressions sur les ressources en eau s'intensifient, et ou les impacts du changement climatique augmentent. Ce rapport donne un apercu des caracteristiques biophysiques, des services ecosystemiques, et de leur relation avec les moyens de subsistance dans le bassin.
5 Kasei, R. A.; Amisigo, B.; Mul, Marloes L. 2016. Managing floods and droughts. In Williams, Timothy O.; Mul, Marloes L.; Biney, C. A.; Smakhtin, Vladimir (Eds.). The Volta River Basin: water for food, economic growth and environment. Oxon, UK: Routledge - Earthscan. pp.76-91.
Natural disasters ; Flooding ; Drought ; Rain ; Risk reduction ; Risk management ; River basins ; Resilience ; Water storage ; Groundwater recharge ; Land use ; Deforestation ; Urban development / West Africa / Benin / Burkina Faso / Ivory Coast / Ghana / Mali / Togo / Volta River Basin
(Location: IWMI HQ Call no: IWMI Record No: H047726)
6 Jin, L.; Whitehead, P. G.; Addo, K. A.; Amisigo, B.; Macadam, I.; Janes, T.; Crossman, J.; Nicholls, R. J.; McCartney, Matthew; Roddai, H. J. E. 2018. Modeling future flows of the Volta River system: impacts of climate change and socio-economic changes. Science of the Total Environment, 637-638: 1069-1080. [doi: https://doi.org/10.1016/j.scitotenv.2018.04.350]
Climate change ; Monsoon climate ; Socioeconomic environment ; Economic growth ; River basin management ; Stream flow ; Catchment areas ; Models ; Water resources ; Evaporation ; Temperature ; Calibration ; Lakes ; Downstream / Africa / Ghana / Burkina Faso / Volta River Basin / Black Volta River / Volta Lake
(Location: IWMI HQ Call no: e-copy only Record No: H048767)
As the scientific consensus concerning global climate change has increased in recent decades, research on potential impacts of climate change on water resources has been given high importance. However in Sub-Saharan Africa, few studies have fully evaluated the potential implications of climate change to their water resource systems. The Volta River is one of the major rivers in Africa covering six riparian countries (mainly Ghana and Burkina Faso). It is a principal water source for approximately 24 million people in the region. The catchment is primarily agricultural providing food supplies to rural areas, demonstrating the classic water, food, energy nexus. In this study an Integrated Catchment Model (INCA) was applied to the whole Volta River system to simulate flow in the rivers and at the outlet of the artificial Lake Volta. High-resolution climate scenarios downscaled from three different Global Climate Models (CNRM-CM5, HadGEM2-ES and CanESM2), have been used to drive the INCA model and to assess changes in flow by 2050s and 2090s under the high climate forcing scenario RCP8.5. Results show that peak flows during the monsoon months could increase into the future. The duration of high flow could become longer compared to the recent condition. In addition, we considered three different socio-economic scenarios. As an example, under the combined impact from climate change from downscaling CNRM-CM5 and medium+ (high economic growth) socio-economic changes, the extreme high flows (Q5) of the Black Volta River are projected to increase 11% and 36% at 2050s and 2090s, respectively. Lake Volta outflow would increase +1% and +5% at 2050s and 2090s, respectively, under the same scenario. The effects of changing socio-economic conditions on flow are minor compared to the climate change impact. These results will provide valuable information assisting future water resource development and adaptive strategies in the Volta Basin.
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