Your search found 5 records
1 Shumilov, S.; Erdenberger, T.; Cremers, A. B.; Bharati, Luna; Plotnikova, Maria; Rodgers, C. 2006. First steps towards an integrated decision support system for water management. In 20th International Conference on Informatics for Environmental Protection, Gratz, Australia, 6 September 2006. 8p.
River basins ; Water management ; Irrigation systems ; Reservoirs ; Decision support tools ; Simulation models ; Surface water ; Groundwater ; Conjunctive use ; Drinking water / West Africa / Ghana / Burkina Faso / Volta Basin / Atankwidi Catchment / Kandiga Reservoir
(Location: IWMI-HQ Call no: IWMI 631.7.1 G190 SHU Record No: H039716)
2 Ahrends, H.; Mast, M.; Rodgers, C.; Kunstmann, H. 2007. Coupled hydrological - economic modelling for optimised irrigated cultivation in a semi-arid catchment of West Africa. Environmental Modelling and Software, 23(4):385-395.
Simulation models ; Decision support tools ; Hydrology ; Water balance ; Irrigated farming / West Africa / Guinea Sudan Zone / Volta Basin / Atankwidi Catchment
(Location: IWMI HQ Call no: P 7964 Record No: H040459)
3 Bharati, Luna; Rodgers, C.; Shumilov, S.; Plotnikova, M.; Vlek, P. 2007. Integrated modelling of conjunctive use of surface and groundwater resources in a small-scale irrigation system in the Volta Basin, Africa. In Reducing the vulnerability of societies to water related risks at the basin scale: proceedings of the 3rd International Symposium on Integrated Water Resources Management, held at the Ruhr-University Bochum, Germany, 26-28 September 2006. Wallingford, UK: International Association of Hydrological Sciences (IAHS) pp.167-172.
Surface water ; Groundwater ; Conjunctive use ; Reservoirs ; Irrigation systems ; Runoff ; Simulation models ; Water balance ; Water table ; River basins ; Pumping ; Costs / Africa / Ghana / Volta Basin / Atankwidi Catchment / Kandiga Village
(Location: IWMI HQ Call no: e-copy only Record No: H040851)
The Volta Basin covers 400 000 km of the West-African Savanna. Agriculture is the dominant ecnomic activity. Given the extremely unreliable rainfall, irrigation development is seen as an obvious strategy to increase agricultural production. Irrigation development is mainly linked to the construction of small and medium sized reservoirs. The potential use of groundwater for irrigation is a very important issue. In this study, we present an evaluation of the conjunctive use of surface and groundwater in a representative small reservoir-irrigation system. The physical processes are modelled with WaSiM-ETH. The physical boundary conditions needed for the optimization model are then passed on to the optimization model written in GAMS, which then simulates the capture and utilization of runoff in small reservoirs. Water can be withdrawn for irrigation, or stored. Irrigation water can also be pumped from the underlying aquifer, and pumping costs are modelled as proportional to the distance to the water table.
4 Bharati, Luna; Rodgers, C.; Erdenberger, T.; Plotnikova, M.; Shumilov, S.; Vlek, P.; Martin, N. 2008. Integration of economic and hydrologic models: exploring conjunctive irrigation water use strategies in the Volta Basin. Agricultural Water Management, 95(8): 925-936.
Decision support tools ; Simulation models ; Optimization ; Conjunctive use ; Surface water ; Groundwater ; River basins ; Catchment areas ; Reservoirs ; Water storage / West Africa / Ghana / Burkina Faso / Togo / Mali / Ivory Coast / Volta Basin / Atankwidi catchment / Kandiga Reservoir
(Location: IWMI HQ Call no: IWMI 631.7.1 G100 BHA Record No: H041379)
We describe the development, calibration and preliminary application of a dynamically coupled economic–hydrologic simulation–optimization model ensemble for evaluating the conjunctive use of surface and groundwater in small reservoir-based irrigation systems characteristic of the Volta Basin, Africa. We focus on a representative small reservoir irrigation system located in the Antakwidi catchment in Ghana. The model ensemble consists of the physical hydrology model WaSiM-ETH and an economic optimization model written in GAMS. Results include optimal water storage and allocation regimes for irrigated production, given conjunctive surface water and groundwater systems. The goal of our research, conducted within the GLOWA Volta project, is to develop a decision support system for improving the management of land and water resources in the face of potential environmental change in the Volta Basin.
5 Barry, Boubacar; Kortatsi, B.; Forkuor, G.; Gumma, M. K.; Namara, Regassa E.; Rebelo, Lisa-Maria; van den Berg, J.; Laube, W. 2010. Shallow groundwater in the Atankwidi Catchment of the White Volta Basin: current status and future sustainability. Colombo, Sri Lanka: International Water Management Institute (IWMI). 23p. (IWMI Research Report 139) [doi: https://doi.org/10.5337/2010.234]
Groundwater irrigation ; Aquifers ; River basins ; Catchment areas ; Irrigation practices ; Remote sensing ; Mapping / Ghana / Atankwidi Catchment / White Volta River Basin
(Location: IWMI HQ Call no: IWMI 333.9104 G200 BAR Record No: H043521)
(1.39 MB)
The Atankwidi Catchment, which lies in the White Volta Basin in West Africa, is intensively cultivated by locals for economic gains. During dry seasons, farmers irrigate their crops, chiefly tomatoes, using shallow groundwater harvested from shallow ponds they dig using simple tools like an axe, hoe, bucket and bowls. Recent expansion in cultivated areas has brought to the fore the need to estimate the volume of shallow groundwater stored in the catchment’s underlying aquifer and to what extent it can sustain the incremental growth in irrigated areas.
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