Your search found 4 records
1 Kirpich, P. Z. 1999. Water planning for food production in developing countries. Lanham, MD, USA: University Press of America. xi, 172p.
Population ; Food supply ; Food production ; Irrigated farming ; Water management ; Conflict ; Water resources ; Development projects ; Water resources development ; Dams ; Water distribution ; Planning ; Water policy ; Urbanization ; Irrigation programs ; Developing countries ; Case studies / South Asia / South East Asia / Bangladesh / India / Laos / North Africa / Morocco / Tunisia / Africa South of Sahara / Ivory Coast / Mali / Latin America / Mexico / Brazil / Ecuador / Peru / Colombia / Haiti / Dominican Republic / Nicaragua / Europe / Greece / Portugal / Middle East / Egypt / Sudan / Jordan / Iraq / Upper Cauca Valley / Lower Cauca Valley / Magdalena Valley / Narmada River / Nam Ngum River / Ait-Adel Dam / Cali / Tras-os-Montes Region / Gezira
(Location: IWMI-HQ Call no: 631.7 G000 KIR Record No: H025803)
2 Yoshida, K.; Tanji, H.; Somura, H.; Kiri, H.; Masumoto, T. 2003. The management of stream temperature in Laos. In ICID Asian Regional Workshop, Sustainable Development of Water Resources and Management and Operation of Participatory Irrigation Organizations, November 10-12, 2003, The Grand Hotel, Taipei. Vol.1. Taipei, Taiwan: ICID. pp.157-166.
Dams ; Hydroelectric schemes ; Energy ; Sedimentation ; River basins ; Runoff ; Analysis ; Models / South East Asia / Laos / Mekong River / Nam Ngum River
(Location: IWMI-HQ Call no: ICID 631.7.2 G570 ICI Record No: H033343)
3 Lacombe, Guillaume; Douangsavanh, Somphasith; Baker, J.; Hoanh, Chu Thai; Bartlett, R.; Phongpachith, C.; Jeuland, M. 2013. Hydropower and irrigation development: implications for water resources in the Nam Ngum River of the Mekong Basin. [Abstract only]. In German Aerospace Center (DLR); Germany. Federal Ministry of Education and Research (BMBF). Mekong Environmental Symposium, Ho Chi Minh City, Vietnam, 5-7 March 2013. Abstract volume, Topic, 10 - Impacts of urbanization and industrialisation on agriculture and water resources. Wessling, Germany: German Aerospace Center (DLR); Bonn, Germany: Federal Ministry of Education and Research (BMBF). pp.176.
Water power ; Dams ; Irrigation development ; Water resources development ; River basins ; Irrigation water ; Water demand / South East Asia / Laos / Mekong River Basin / Nam Ngum River
(Location: IWMI HQ Call no: e-copy only Record No: H045754)
(2.09MB)
To meet rising demands for food and energy, the number of hydropower dams is growing rapidly and irrigation schemes will likely expand, in the Mekong Basin. The cumulative hydrological effect of planned water resources development has previously been assessed at the Mekong Basin scale. This paper analyzes how water control structures modify the balance between water demand and water supply along the Nam Ngum River, a Mekong tributary in Lao PDR. The Nam Ngum Basin, already containing both irrigation schemes and hydropower dams, has the potential for significantly enlarged river-fed irrigation, as well as additional upstream hydropower dams. We analyzed flow data recorded since 1962, in combination with a reservoir system optimization model, to assess changes in monthly river flows induced by existing and planned hydropower dams. Current and potential irrigation water demands were assessed from satellite images, cropping calendars and simple crop water balance. Our results indicate that, by the 2030s, if eight hydropower dams are completed in the Nam Ngum Basin, dry season river flow could increase by more than 200% and wet season flows could decrease by 20%. In the absence of dam storage, current irrigation water demand would compete with minimum environmental flow requirements during dry years. In contrast, full hydropower development allows current irrigation water demand to triple, to reach the potential levels of development, whilst maintaining environmental flows. The contribution of the Nam Ngum Basin to the Mekong River flow at Kratie, a few hundreds kilometers upstream of the Tonle Sap Lake, has changed from 5 to 15% in April, since hydropower dams started developing in the Mekong Basin, suggesting that the effect of water control development in the Nam Ngum Basin impacts water resources further downstream. Beyond the effects on water resources, there are a number of other impacts on fisheries, sediment, biodiversity, ecosystems, and population resettlement that should be considered in order to better understand the environmental and socioeconomic costs and benefits of these hydropower dams.
4 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.
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