Your search found 103 records
1 Mondal, M. K.; Tuong, T. P.; Sharifullah, A. K. M.; Sattar, M. A. 2010. Water supply and demand for dry-season rice in the coastal polders of Bangladesh. In Hoanh, Chu Thai; Szuster, B. W.; Kam, S. P.; Ismail, A. M; Noble, Andrew D. (Eds.). Tropical deltas and coastal zones: food production, communities and environment at the land-water interface. Wallingford, UK: CABI; Colombo, Sri Lanka: International Water Management Institute (IWMI); Penang, Malaysia: WorldFish Center; Los Banos, Philippines: International Rice Research Institute (IRRI); Bangkok, Thailand: FAO Regional Office for Asia and the Pacific; Colombo, Sri Lanka: CGIAR Challenge Program on Water and Food (CPWF). pp.264-278.
Rice ; Irrigation requirements ; Coastal area ; Water supply ; Water demand ; Polders ; Dry season / Bangladesh
(Location: IWMI HQ Call no: IWMI 639 G000 HOA Record No: H043063)
(5.08 MB)
2 American Geophysical Union (AGU). 2004. River basin management: economics, management, and policy. Selected reprints from Water Resources Research vol. 40(8) & vol. 39(11). Washington, DC, USA: American Geophysical Union (AGU). v.p.
River basin management ; Water productivity ; Case studies ; Dry season ; Water demand ; Models ; Water market ; Water policy ; Water allocation ; Non-governmental organizations ; Floodplains ; Irrigated farming
(Location: IWMI HQ Call no: IWMI 333.91 G000 RIV Record No: H043694)
3 Pavelic, Paul; Smakhtin, Vladimir; Favreau, G.; Villholth, K. G. 2011. Water balance approach for assessing potential for small-scale groundwater irrigation in Sub-Saharan Africa. Paper presented at the International Conference on Groundwater: Our Source of Security in an Uncertain Future, CSIR International Convention Centre, Pretoria, South Africa, 19-21 September 2011. 12p.
Water balance ; Groundwater development ; Groundwater irrigation ; Water storage ; Small scale systems ; Rain ; Smallholders ; Farmers ; Dry season ; Monitoring ; River basins ; Case studies / Africa South of Sahara / Ghana / Burkina Faso / Atankwidi basin / Iullemmeden basin / Southwestern Niger
(Location: IWMI HQ Call no: e-copy only Record No: H044349)
(0.22 MB)
Strategies for overcoming the lack of agricultural groundwater development over much of SSA are urgently needed. Expansion of small-scale groundwater irrigation offers an attractive option to smallholder farmers to overcome poor wet-season rainfall and enhance dry season production. This paper presents a simple, generic methodology that involves a set of type-curves to aid with decision making on the scope of opportunities for developing sustainable irrigation supplies, and to help understand how cropping choices influence the areal extent of irrigation. Guidance to avoid over-exploitation of the resource is also provided. The methodology was applied to two sites in West Africa with contrasting climate and subsurface conditions and at both sites there is potential for further groundwater development for irrigation whilst allowing provisions for other sectorial uses, including the environment.
4 Gurung, Pabitra; Bharati, Luna. 2011. Downstream hydrological impacts of the Melamchi inter-basin water transfer plan. In Nepal. Department of Irrigation. Proceedings of National Irrigation Seminar Micro to Mega: Irrigation for Prosperous Nepal, Kathmandu, Nepal, 13-14 July 2011. Lalitpur, Nepal: Department of Irrigation. pp.161-168.
Downstream ; Hydrological factors ; River basins ; Water availability ; Water transfer ; Water supply ; Drinking water ; Water balance ; Models ; Dry season ; Wet season / Nepal / Melamchi / Kathmandu Valley / Indrawati River
(Location: IWMI HQ Call no: e-copy only Record No: H044590)
(1.33 MB)
5 McCartney, Matthew; Morardet, S.; Rebelo, Lisa-Maria; Finlayson, C. M.; Masiyandima, M. 2011. A study of wetland hydrology and ecosystem service provision: GaMampa wetland, South Africa. Hydrological Sciences Journal, 56(8):1452-1466. [doi: https://doi.org/10.1080/02626667.2011.630319]
Wetlands ; Hydrology ; Ecosystems ; Flow ; Dry season ; Economic aspects ; Economic analysis ; Land cover / South Africa / GaMampa wetland / Mohlapitsi River / Olifants River
(Location: IWMI HQ Call no: e-copy only Record No: H044592)
(3.37 MB)
The GaMampa wetland, a palustrine wetland, comprises less than 1% of the catchment but is widely believed to make a significant contribution to dry-season river flow in the Mohlapitsi River, a tributary of the Olifants River, in South Africa. The contribution of the GaMampa wetland to dry-season flow in the Mohlapitsi River and the impact of increasing agriculture on its hydrological functioning were investigated. Economic analyses showed that the net financial value of the wetland was US$ 83,263 of which agriculture comprises 38%. Hydrological analyses indicated that the Mohlapitsi River contributes, on average, 16% of the dry-season flow in the Olifants River. However, the wetland contributes, at most, 12% to the increase in dry-season flow observed over the reach of the river in which the wetland is located. The remainder of the increase originates from groundwater flowing through the wetland. Furthermore, despite the conversion of 50% of the wetland to agriculture since 2001, there has been no statistically significant reduction in dry-season flow in the Mohlapitsi River. These results highlight the importance of understanding the nature of the full suite of services being provided by a wetland in order to make informed decisions for appropriate management.
6 Gurung, Pabitra; Bharati, Luna. 2012. Downstream impacts of the Melamchi Inter-Basin Water Transfer Plan (MIWTP) under current and future climate change projections. Hydro Nepal: Journal of Water, Energy and Environment, April:23-29. (Special issue on "Proceedings of National Conference on Water, Food Security and Climate Change in Nepal" with contributions by IWMI authors).
Downstream ; River basins ; Drinking water ; Water availability ; Water supply ; Water transfer ; Climate change ; Simulation models ; Wet season ; Dry season ; Crop management ; Water requirements ; Irrigation / Nepal / Kathmandu / Koshi River Basin / Melamchi River
(Location: IWMI HQ Call no: IWMI Record No: H044828)
The Melamchi Water Supply Project (MWSP) is designed to minimize the shortage of drinking water in the Kathmandu valley. Although the project was supposed to be completed by 2008, due to various problems, it is still diffi cult to forecast the exact date of completion. This paper quantifi es the downstream effects of diverting water from the Melamchi (Stage-I),Yangri (Stage-II) and Larke (Stage-III) rivers under current as well as future climate scenarios. The Soil Water Assessment Tool (SWAT) was used in the analysis. Result shows that in the Stage-I water transfer plan, average infl ow reduction in the immediate downstream sub-basin in the dry and wet seasons are 36% and 7% respectively, where as in Stage-II the infl ow reductions are 38% for the dry season and 8% for the wet season. In Stage-III, infl ow reductions are 38% in the dry season and 7% in the wet season. The impact of the water transfer schemes on various changes in water management within the Melamchi River irrigation command area was also tested. BUDGET (soil, water and salt balance) model was used to quantify crop water requirement of Melamchi River command area when the irrigated area is increased and the cropping pattern is changed. Simulation results of crop water requirement in intensive water use conditions show that present Melamchi River command area can be increased by 2.2 times under current climate projection, whereas the area can be increased 1.4 times in 2030s and by 2.0 times in 2050s.
7 Lacombe, Guillaume; Smakhtin, Vladimir; Hoanh, Chu Thai. 2013. Wetting tendency in the Central Mekong Basin consistent with climate change-induced atmospheric disturbances already observed in East Asia. Theoretical and Applied Climatology, 111(1-2):251-263. [doi: https://doi.org/10.1007/s00704-012-0654-6]
River basins ; Climate change ; Global warming ; Rainfall patterns ; Rainfed farming ; Dry season ; Wet season ; Crop production / Southeast Asia / Mekong River Basin
(Location: IWMI HQ Call no: e-copy only Record No: H044857)
(0.44 MB)
Regional and local trends in rainfall intensity, frequency, seasonality, and extremes were analyzed in the central Mekong Basin in continental Southeast Asia over the period 1953–2004 using the modified Mann–Kendall test, accounting for long-term persistence and the regional average of the Kendall’s statistic. Regionally significant and insignificant wetting tendencies of the dry and wet seasons, respectively, were found to be consistent with rainfall alterations in the neighboring southeastern part of China and attributed by previous studies to the weakening of the East Asia Summer and Winter Monsoons. These observations suggest the existence of causal links between global warming and rainfall changes observed in continental Southeast Asia. Although these changes most likely did not alter agricultural production, they confirm the need to account for climate change impacts when assessing water resources availability in this region under rapid economic development.
8 World Bank. 2010. The Zambezi River Basin: a multi-sector investment opportunities analysis. Vol. 2 - Basin development scenarios. Washington, DC, USA: World Bank. 86p.
River basin development ; Investment ; Population ; Reservoirs ; Models ; Economic analysis ; Water power ; Energy generation ; Water supply ; Irrigation programs ; Irrigation development ; Irrigation sites ; Climate change ; Precipitation ; Flooding ; Sensitivity analysis ; Crops ; Wet season ; Dry season ; Flow discharge / Africa / Zambezi River Basin
(Location: IWMI HQ Call no: e-copy only Record No: H044944)
http://www-wds.worldbank.org/external/default/WDSContentServer/WDSP/IB/2010/12/14/000333038_20101214043612/Rendered/PDF/584040V20WP0Wh1evelopment0Scenarios.pdf?
https://vlibrary.iwmi.org/pdf/H044944.pdf
https://vlibrary.iwmi.org/pdf/H044944.pdf
(7.71 MB) (7.7MB)
The Zambezi River Basin (ZRB) is one of the most diverse and valuable natural resources in Africa. Its waters are critical to sustainable economic growth and poverty reduction in the region. In addition to meeting the basic needs of some 30 million people and sustaining a rich and diverse natural environment, the river plays a central role in the economies of the eight riparian countries—Angola, Botswana, Malawi, Mozambique, Namibia, Tanzania, Zambia, and Zimbabwe. It provides important environmental goods and services to the region and is essential to regional food security and hydropower production. Because the Zambezi River Basin is characterized by extreme climatic variability, the River and its tributaries are subject to a cycle of floods and droughts that have devastating effects on the people and economies of the region, especially the poorest members of the population.
9 Hertzog, T.; Adamczewski, A.; Molle, Francois; Poussin, J.-C.; Jamin, J.-Y. 2012. Ostrich-like strategies in Sahelian sands?: land and water grabbing in the Office du Niger, Mali. Water Alternatives, 5(2):304-321.
Water management ; Water shortage ; Water rights ; Land management ; Land acquisition ; Land use ; Irrigated land ; Irrigation schemes ; Irrigation projects ; Investment ; Social aspects ; Economic aspects ; Dry season ; Flooding ; River basins / Mali / Office du Niger
(Location: IWMI HQ Call no: e-copy only Record No: H044968)
http://www.water-alternatives.org/index.php?option=com_docman&task=doc_download&gid=171
https://vlibrary.iwmi.org/pdf/H044968.pdf
https://vlibrary.iwmi.org/pdf/H044968.pdf
(621.38KB)
In recent years, large-scale agricultural investment projects have increased in sub-Saharan Africa as a result of the growing appetites of local and international investors for land resources. Research has so far mainly focused on land issues, but the water implications of these land deals are starting to surface. Taking the Office du Niger (ON), in Mali, as a case study, we show that while around 100,000 ha is currently being cultivated, mostly by smallholders, a total of 600,000 ha of land has been allocated in the past ten years to investors in large-scale farming. This process has largely bypassed the official procedure established by the ON at regional level. The allocation of new lands has shifted to the national level, with an attempt to recentralize the management of land deals and associated benefits at the highest level, despite contrary efforts by foreign donors to strengthen the ON. This article describes the complex allocation process based on 'behind-closed-doors' negotiations. It then analyses the implications of the land deals on water issues by focusing on the strategies of actors to limit the risk of future water shortages, the current and expected difficulties in water management and allocation, and the emerging spatial and social redistribution of benefits and risk that signals a process of water grabbing.
10 AgWater Solutions Project (Agricultural Water Solutions Project). 2012. Decentralized rainwater harvesting in Madhya Pradesh: a profitable investment option to improve agricultural production and incomes. Agriculture water management business proposal document. Colombo, Sri Lanka: International Water Management Institute (IWMI). AgWater Solutions Project (Agricultural Water Solutions Project). 14p.
Rain water management ; Water harvesting ; Investment ; Agricultural production ; Crop yields ; Livestock ; Income ; Dry season ; Water shortage ; Irrigation water ; Models / India / Madhya Pradesh
(Location: IWMI HQ Call no: e-copy only Record No: H045042)
(352.47KB)
11 Evans, Alexandra E. V.; Giordano, Meredith; Clayton, Terry. (Eds.) 2012. Investing in agricultural water management to benefit smallholder farmers in Burkina Faso. AgWater Solutions Project country synthesis report. Colombo, Sri Lanka: International Water Management Institute (IWMI). 22p. (Also in French). (IWMI Working Paper 149) [doi: https://doi.org/10.5337/2012.211]
Water management ; Agricultural production ; Investment ; Research projects ; Smallholders ; Farmers ; Surface water ; Water storage ; Dry season ; Vegetable growing ; Watersheds ; Reservoirs ; Social aspects ; Environmental effects ; Assessment ; Irrigation systems ; Pumps ; Stakeholders / Burkina Faso
(Location: IWMI HQ Call no: IWMI Record No: H045183)
(958.5KB)
The AgWater Solutions Project, carried out between 2009 and 2012, focused on resolving water issues faced by smallholder farmers. The project examined existing Agricultural Water Management (AWM) solutions, together with factors that influence their adoption and scaling up. The project aimed to identify investment opportunities in AWM that have high potential to improve the incomes and food security of poor farmers. The work was undertaken in the African countries of Burkina Faso, Ethiopia, Ghana, Tanzania and Zambia, and in the Indian States of Madhya Pradesh and West Bengal. This Working Paper series summarizes results and recommendations from the research carried out in each of these countries and states.
12 Evans, Alexandra E. V.; Giordano, Meredith; Clayton, Terry. (Eds.) 2012. Investir dans la gestion de l’eau en agriculture au profit des petits exploitants agricoles du Burkina Faso. Rapport national de synthese du projet AgWater Solutions. In French. [Investing in agricultural water management to benefit smallholder farmers in Burkina Faso. AgWater Solutions Project country synthesis report]. Colombo, Sri Lanka: International Water Management Institute (IWMI). 24p. (Also in English). (IWMI Working Paper 149 / Document de travail IWMI 149) [doi: https://doi.org/10.5337/2012.216]
Water management ; Agricultural production ; Investment ; Research projects ; Smallholders ; Farmers ; Surface water ; Water storage ; Dry season ; Vegetable growing ; Watersheds ; Reservoirs ; Social aspects ; Environmental effects ; Assessment ; Irrigation systems ; Pumps ; Stakeholders / Burkina Faso
(Location: IWMI HQ Call no: IWMI Record No: H045324)
(1.0MB)
Le projet AgWater Solutions, mis a execution entre 2009 et 2012, s'est interesse a la resolution des problèmes d'eau auxquels sont confrontes les petits exploitants agricoles. Le projet a examine les solutions existantes de Gestion de l'eau en agriculture (GEA), ainsi que les facteurs qui influent sur leur adoption et l'elargissement de leur utilisation. Son objectif etait de definir les opportunites d'investissement dans la GEA les plus prometteuses pour ameliorer les revenus et la securite alimentaire des agriculteurs pauvres. Les travaux ont ete entrepris dans plusieurs pays africains, Burkina Faso, Ethiopie, Ghana, Tanzanie et Zambie, et dans les etats indiens du Madhya Pradesh et du Bengale occidental. Ce document de travail resume les resultats et recommandations decoulant des recherches menees dans chacun de ces pays et etats.
13 Mekong River Commission Secretariat. 1994. Irrigation rehabilitation study in Cambodia: inventory and analyses of existing systems. Vol. 1 - Main report. Bangkok, Thailand: Sir William Halcrow and Partners. 19p. + appendixes.
Irrigation systems ; Rehabilitation ; Irrigated sites ; Irrigated farming ; Water resources ; Water availability ; Soils ; Rice ; Agricultural production ; Cropping systems ; Cropping patterns ; Reservoir, ; Canals ; Catchment areas ; Runoff ; Assessment ; Land suitability ; Land use ; Dry season ; Wet season ; Development projects ; Soils ; Organizations ; Economic aspects / Cambodia
(Location: IWMI HQ Call no: e-copy only Record No: H045738)
(2.72 MB)
14 Pavelic, Paul; Villholth, Karen G.; Verma, Shilp. (Eds.) 2013. Sustainable groundwater development for improved livelihoods in Sub-Saharan Africa. Part 1. Water International, 38(4):363-503. (Special issue with contributions by IWMI authors).
Groundwater development ; Groundwater irrigation ; Groundwater recharge ; Living standards ; Sustainability ; Small scale systems ; Smallholders ; Evapotranspiration ; Dry season ; Pumps ; Hydrogeology ; Water quality / Sub-Saharan Africa / Ghana / Niger / Ethiopia / Zambia
(Location: IWMI HQ Call no: PER Record No: H046254)
15 Tuong, T. P.; Humphreys, E.; Khan, Z. H.; Nelson, A.; Mondal, M.; Buisson, Marie-Charlotte; George, P. 2014. Messages from the Ganges Basin development challenge: unlocking the production potential of the polders of the coastal zone of Bangladesh through water management investment and reform. Colombo, Sri Lanka: CGIAR Challenge Program on Water and Food (CPWF). 32p.
Water management ; Water resources ; Water governance ; Coastal area ; River basin development ; Investment ; Cropping systems ; Drainage ; Climate change ; Dry season ; Wet season ; Aquaculture ; Agriculture ; Reclaimed land / Bangladesh
(Location: IWMI HQ Call no: e-copy only Record No: H046498)
http://r4d.dfid.gov.uk/pdf/outputs/WaterfoodCP/CPWF-Ganges-basin-messages-final.pdf
https://vlibrary.iwmi.org/pdf/H046498.pdf
https://vlibrary.iwmi.org/pdf/H046498.pdf
(1.16 MB)
16 Eriyagama, Nishadi; Muthuwatta, Lal; Thilakarathne, Madusanka. 2014. Minimizing flood damage and augmenting dry season water availability: prospects for floodwater harvesting and underground storage in Sri Lanka. In Sri Lanka. Ministry of Disaster Management. Proceedings of the Disaster Management Conference: The future we want- Safer Sri Lanka, Colombo, Sri Lanka, 24-26 September 2014. Colombo, Sri Lanka: Ministry of Disaster Management. pp.379-381.
Flooding ; Water harvesting ; Water availability ; Dry season ; Drought ; Groundwater management ; Groundwater recharge / Sri Lanka
(Location: IWMI HQ Call no: e-copy only Record No: H046628)
(0.37 MB)
Flood water harvesting and underground storage is a concept that has received significant attention in many regions of the world. Its intention is to capture floodwater from currently flooded areas and to store it for later use, in order to both, reduce damage caused by floods, as well as to satisfy demands for water during drier periods. This paper presents a preliminary analysis of the prospects for its realization in Sri Lanka. A coarse scale suitability index is constructed and mapped at district level in order to identify the districts having higher prospects for its implementation. Preliminary results indicate three main clusters of highly suitable districts, subject to favourable geological conditions. Cluster 1 consists of Ampara and Batticalao, Cluster 2 of Kurunegala, Anuradhapura and Mannar, and Cluster 3 of Ratnapura. The potential for groundwater recharge of the highly suitable clusters need special investigation prior to arriving at concrete conclusions. If successfully implemented, this concept may prove a valuable intervention for adapting to current and future floods and droughts.
17 Lacombe, Guillaume; Douangsavanh, S.; Baker, J.; Hoanh, Chu Thai; Bartlett, R.; Jeuland, M.; Phongpachith, C. 2014. Are hydropower and irrigation development complements or substitutes?: the example of the Nam Ngum River in the Mekong Basin. Water International, 39(5):649-670. [doi: https://doi.org/10.1080/02508060.2014.956205]
Water power ; Irrigation development ; River basins ; Water resources ; Irrigated land ; Irrigation water ; Water demand ; Water balance ; Water availability ; Simulation models ; Environmental flows ; Dry season / Lao People s Democratic Republic / Nam Ngum River / Mekong Basin / Vientiane Plain
(Location: IWMI HQ Call no: e-copy only Record No: H046639)
(0.51 MB)
Hydropower and irrigation developments to address rising demand for food and energy are modifying the water balance of the Mekong Basin. Infrastructure investment decisions are also frequently made from a sub-catchment perspective. This paper compares river flows with irrigation development stages in the Nam Ngum sub-basin where the potential for irrigation and hydropower expansion is largely untapped. It shows that full hydropower development in this basin allows irrigation water use to triple, even as it reduces competition with environmental flow requirements. The implications for the wider Mekong are, however, unclear, particularly given uncertainty over parallel transformations elsewhere in the basin.
18 Hecht, J.; Lacombe, Guillaume. 2014. The effects of hydropower dams on the hydrology of the Mekong Basin. Vientiane, Lao PDR: CGIAR Research Program on Water, Land and Ecosystems (WLE) 15p. (State of Knowledge Series 5)
Water power ; Hydrology ; Dam construction ; Rivers ; Stream flow ; Dry season ; Ecosystems ; Reservoir storage ; Deltas ; Hydrological factors ; Climate change ; Water levels ; Case studies / South East Asia / Mekong Basin / Mekong Delta
(Location: IWMI HQ Call no: e-copy only Record No: H046641)
http://wle-mekong.cgiar.org/download/state-of-knowledge/hydrology-mekong-basin/Hydrology%20of%20the%20Mekong%20Basin%20_English_web%2016092014.pdf
https://vlibrary.iwmi.org/pdf/H046641.pdf
https://vlibrary.iwmi.org/pdf/H046641.pdf
(0.50 MB) (509.30 KB)
19 Mishra, Atmaram; Ghosh, S.; Mohanty, R. K.; Brahmanand, P. S.; Verma, H. C. 2014. Secondary storage reservoir: a potential option for rainwater harvesting in irrigated command for improved irrigation and agricultural performance. Economic Affairs, 59(3):389-402. [doi: https://doi.org/10.5958/0976-4666.2014.00007.2]
Reservoir storage ; Rainwater ; Water harvesting ; Irrigation water ; Irrigation projects ; Agricultural development ; Dry season ; Crop management ; Economic analysis ; Farmers ; Fish culture
(Location: IWMI HQ Call no: e-copy only Record No: H046723)
(0.99 MB)
Present study recommends an option to overcome the limited water availability in surface irrigation system through provision of secondary reservoirs in the command. The harvested water can be utilized for irrigation in the dry season, short duration fish culture, etc. Approximately 10% of the command area is required for the secondary reservoir with assumption of 50% capacity of the main reservoir will be available for irrigating dry season crops. The demonstration of use of water from the secondary reservoir in addition to the water from main reservoir has resulted in substantial crop and fish yield. The gross and net returns from various cropping patterns considered using irrigation water from main reservoir (MR) and from main and secondary reservoir (MR+SR). Among the cropping patterns considered, rice-tomato cropping pattern resulted in highest net return of INR 29,457/ha followed by rice-brinjal cropping pattern (INR 22,430/ha) with benefit cost ratio of 2.07 and 1.79, respectively. Highest benefit-cost ratio of 2.09 was obtained for rice-sunflower cropping system due to relatively lower cost of cultivation of sunflower. The highest incremental value of net returns of 3710 `/ha was obtained with rice-tomato cropping system. The low input-based scientific fish culture in the secondary reservoir has enhanced the fish yield by three fold over traditional practice increasing the gross return from the system. The economic analysis also revealed that the intervention is economically viable.
20 Harrington, Larry W.; van Brakel, M. 2014. Innovating in a dynamic technical context. In Harrington, Larry W.; Fisher, M. J. (Eds.). Water scarcity, livelihoods and food security: research and innovation for development. Oxon, UK: Routledge - Earthscan. pp.99-124. (Earthscan Studies in Water Resource Management)
Research projects ; Technical progress ; Innovation ; Rainwater ; Groundwater ; Water management ; Corporate culture ; Problem analysis ; Policy ; Ecosystem services ; Dry season ; Crop management ; Rice ; Farmers ; Communities ; Public health ; Social aspects / Asia / Africa / South America / Andes River Basins / Mekong River Basin / Limpopo River Basin / Ganges River Basin / Nile River Basin / Volta River Basin
(Location: IWMI HQ Call no: 333.91 G000 HAR, e-copy SF Record No: H046786)
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