Your search found 5 records
1 Barry, B.. 2002. Development of urban and peri-urban agriculture in West Africa. In Sally, H.; Abernethy, C. L. (Eds.), Private irrigation in Sub-Saharan Africa: Regional Seminar on Private Sector Participation and Irrigation Expansion in Sub-Saharan Africa, Accra, Ghana, 22-26 October 2001. Colombo, Sri Lanka: IWMI; FAO; ACP-EU Technical Centre for Agricultural and Rural Cooperation. pp.57-63.
Agricultural development ; Urbanization ; Crop production ; Horticulture ; Vegetables ; Employment ; Constraints ; Water availability ; Health / West Africa
(Location: IWMI-HQ Call no: IWMI 631.7.3 G110 SAL Record No: H030870)
(0.07 MB)
2 Barry, B.; Touchain, E.; Crosby, C. 2002. Smallholder rainfed agriculture in South Africa and research perspectives. [Discussion draft consultancy report]. Accra, Ghana: International Water Management Institute (IWMI). 33p.
Rain-fed farming ; Farming systems ; Poverty ; Food security ; Households ; Cropping systems ; Grazing ; Livestock / South Africa
(Location: IWMI HQ Call no: IWMI 631 G178 BAR Record No: H032464)
(1.73 MB)
3 Barry, B.; Sonou, M. 2003. Best practices in rainfed agriculture in West Africa. In Beukes, D.; de Villiers, M.; Mkhize, S.; Sally, H.; van Rensburg, L. (Eds.). Proceedings of the Symposium and Workshop on Water Conservation Technologies for Sustainable Dryland Agriculture in Sub-Saharan Africa (WCT), held at Bloem Spa Lodge and Conference Centre, Bloemfontein, South Africa, 8-11 April 2003. Pretoria, South Africa: ARC-Institute for Soil, Climate and Water. pp.60-74.
Rainfed farming ; Best practices ; Water harvesting ; Tillage ; Erosion ; Bunds ; Water conservation ; Supplemental irrigation ; Soil conservation / West Africa
(Location: IWMI-HQ Call no: IWMI 631.7.1 G100 BEU Record No: H034389)
4 Obuobie, E.; Barry, B.; Agyekum, W. 2016. Groundwater resources of the Volta Basin. 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.46-61.
Groundwater extraction ; Groundwater recharge ; Groundwater irrigation ; Surface water ; Water quality ; Drinking water ; Domestic water ; Water supply ; Water availability ; Water use ; Irrigated farming ; Aquifers / West Africa / Benin / Burkina Faso / Ivory Coast / Ghana / Mali / Togo / Volta River Basin
(Location: IWMI HQ Call no: IWMI Record No: H047724)
5 Ibrahim, B.; Wisser, D.; Barry, B.; Fowe, T.; Aduna, A. 2015. Hydrological predictions for small ungauged watersheds in the Sudanian Zone of the Volta Basin in West Africa. Journal of Hydrology: Regional Studies, 4(Part B):386-397. [doi: https://doi.org/10.1016/j.ejrh.2015.07.007]
Watersheds ; Hydrological factors ; Forecasting ; Water balance ; Models ; Regression analysis ; Calibration ; Runoff ; Uncertainty ; Groundwater recharge ; Evapotranspiration ; Rain / West Africa / Burkina Faso / Ghana / Benin / Volta Basin / Sudanian Zone / Diebougou Watershed / Nasia Watershed / Nabogo Watershed / Nangodi Watershed / Tiele Watershed / Dano Watershed / Vea Watershed / Dassari Watershed
(Location: IWMI HQ Call no: e-copy only Record No: H048029)
http://www.sciencedirect.com/science/article/pii/S2214581815000920/pdfft?md5=646f838d3c891bf8f1c8783815ebf476&pid=1-s2.0-S2214581815000920-main.pdf
https://vlibrary.iwmi.org/pdf/H048029.pdf
https://vlibrary.iwmi.org/pdf/H048029.pdf
(1.50 MB) (1.50 MB)
Study region: Hydrological observation networks in the West African region are not dense and reliable. Furthermore, the few available discharge data often present significant gaps. The Volta basin, the second largest transboundary basin in the region, is a typical example of a basin with inadequate hydrological networks.
Study focus: In this study, a prediction approach to determine monthly discharge in ungauged watersheds is developed. The approach is based on the calibration of two conceptual models for gauged watersheds and an estimation of models’ parameters from the physical and climatic characteristics of the watersheds. The models’ parameters were determined for each ungauged watershed through two different methods: the multiple linear regressions and the kriging method. The two methods were first validated on five gauged watersheds and then applied to the three ungauged watersheds.
New hydrological insights for the region: The application of the two hydrological models on the eight watersheds helped to produce relevant monthly runoff and to establish the annual hydrological balances from 1970 to 2000 for both gauged and ungauged watersheds. The developed method in this study could therefore help estimate runoff time series, which are of crucial importance when it comes to design hydraulic structures such as small reservoirs.
Study focus: In this study, a prediction approach to determine monthly discharge in ungauged watersheds is developed. The approach is based on the calibration of two conceptual models for gauged watersheds and an estimation of models’ parameters from the physical and climatic characteristics of the watersheds. The models’ parameters were determined for each ungauged watershed through two different methods: the multiple linear regressions and the kriging method. The two methods were first validated on five gauged watersheds and then applied to the three ungauged watersheds.
New hydrological insights for the region: The application of the two hydrological models on the eight watersheds helped to produce relevant monthly runoff and to establish the annual hydrological balances from 1970 to 2000 for both gauged and ungauged watersheds. The developed method in this study could therefore help estimate runoff time series, which are of crucial importance when it comes to design hydraulic structures such as small reservoirs.
Powered by DB/Text WebPublisher, from
