Your search found 4 records
1 Kummu, M.; Sarkkula, J.; Koponen, J.; Nikula, J. 2006. Ecosystem management of the Tonle Sap Lake: An integrated modelling approach. International Journal of Water Resources Development, 22(3):497-519.
Lakes ; Sedimentation ; Flood plains ; Ecosystems ; Models / Cambodia / Mekong River / Tonle Sap Lake
(Location: IWMI-HQ Call no: PER Record No: H039469)
2 Sarkkula, J.; Keskinen, M.; Koponen, J.; Kummu, M.; Richey, J. E.; Varis, O. 2009. Hydropower in the Mekong Region: what are the likely impacts upon fisheries. In Molle, Francois; Foran, T.; Kakonen, M. (Eds.). Contested waterscapes in the Mekong region: hydropower, livelihoods and governance. London, UK: Earthscan. pp.227-249.
Hydroelectric schemes ; Fisheries ; Models ; River Basins ; Productivity ; Flood plains ; Economic aspects ; Poverty ; Dams / China / Mekong Region / Mekong River Basin / Tonle Sap River Basin
(Location: IWMI HQ Call no: 333.91 G8000 MOL Record No: H042358)
3 Sarkkula, J.; Keskinen, M.; Koponen, J.; Kummu, M.; Nikula, J.; Varis, O.; Virtanen, M. 2007. Mathematical modeling in integrated management of water resources: magical tool, mathematical toy or something in between? In Lebel, L.; Dore, J.; Daniel, R.; Koma, Y. S. (Eds.). Democratizing water governance in the Mekong. Chiang Mai, Thailand: Mekong Press. pp.127-156.
Mathematical models ; Water resource management ; Impact assessment ; Forecasting / South East Asia / Cambodia / Mekong River / Tonle Sap Lake
(Location: IWMI HQ Call no: 333.9162 G800 LEB Record No: H042587)
4 Rasanen, T. A.; Someth, P.; Lauri, H.; Koponen, J.; Sarkkula, J.; Kummu, M. 2017. Observed river discharge changes due to hydropower operations in the Upper Mekong Basin. Journal of Hydrology, 545:28-41. [doi: https://doi.org/10.1016/j.jhydrol.2016.12.023]
Water power ; International waters ; Rivers ; Downstream ; Flow discharge ; Development projects ; Hydrological factors ; Models ; Water levels ; Dams ; Reservoirs ; Dry season ; Wet season / Thailand / Cambodia / Upper Mekong Basin / Chiang Saen / Nakhon Phanom / Kratie
(Location: IWMI HQ Call no: e-copy only Record No: H048004)
(1.55 MB)
The Upper Mekong Basin is undergoing extensive hydropower development and its largest dams have recently become operational. Hydropower is built to improve the regional energy supply, but at the same time, it has considerable transboundary impacts on downstream discharge regime and further on aquatic ecosystems, riparian livelihoods and food security. Despite the transboundary significance of the impacts, there is no public information on the hydropower operations or on the already observed downstream discharge impacts since the completion of the largest dams. Therefore, in this study we assess the discharge changes using observed river discharge data and a distributed hydrological model over the period of 1960–2014. Our findings indicate that the hydropower operations have considerably modified the river discharges since 2011 and the largest changes were observed in 2014. According to observed and simulated discharges, the most notable changes occurred in northern Thailand (Chiang Saen) in March-May 2014 when the discharge increased by 121–187% and in July-August 2014 when the discharge decreased by 32–46% compared to average discharges. The respective changes in Cambodia (Kratie) were 41–74% increase in March-May 2014 and 0–6% decrease in July-August 2014 discharges. The earlier model-based predictions of the discharge changes are well in line with the observed changes, although observed changes are partly larger. The discharge impacts are expected to vary from year to year depending on hydropower operations. Altogether, the results highlight the need for strong transboundary cooperation for managing the downstream impacts.
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