TY - JOUR
T1 - Evaluation of groundwater resources in wide inundation areas of the Mekong River basin
AU - Kazama, So
AU - Hagiwara, Terumichi
AU - Ranjan, Priyantha
AU - Sawamoto, Masaki
N1 - Funding Information:
The writing of this paper was made possible largely through a Grant from the Sumitomo Foundation and through the Grants-in-Aid for Scientific Research from Japan Society for the Promotion of Science (JSPS) and we acknowledge the generosity of these organizations. We also thank the Department of Hydrology, Ministry of water resources and meteorology, Cambodia for providing data.
PY - 2007/7/15
Y1 - 2007/7/15
N2 - Severe floods can have disastrous impacts and cause wide ranging destruction in the Mekong River basin. At the same time groundwater resources are significantly influenced and extensively recharged by flood water in inundation areas of the basin. This study determines the variation of groundwater resources caused by flooding over inundated areas located in lower part of the Mekong River basin using numerical modeling and field observations. The inundation calculations have been evaluated using satellite image outputs. Comparing large, medium and small flood events, we conclude that flood control which reduces the area of inundation, results in a reduction of groundwater resources in the area. In 1993, a 19% reduction in inundation areas resulted in a 31% reduction in groundwater storage. In 1998, a 44% reduction in inundation areas led to a 42% reduction in groundwater storage. Thus, while flood control activities are vital to reduce negative flood impacts in the Mekong River basin, they also negatively impact groundwater resources in the area.
AB - Severe floods can have disastrous impacts and cause wide ranging destruction in the Mekong River basin. At the same time groundwater resources are significantly influenced and extensively recharged by flood water in inundation areas of the basin. This study determines the variation of groundwater resources caused by flooding over inundated areas located in lower part of the Mekong River basin using numerical modeling and field observations. The inundation calculations have been evaluated using satellite image outputs. Comparing large, medium and small flood events, we conclude that flood control which reduces the area of inundation, results in a reduction of groundwater resources in the area. In 1993, a 19% reduction in inundation areas resulted in a 31% reduction in groundwater storage. In 1998, a 44% reduction in inundation areas led to a 42% reduction in groundwater storage. Thus, while flood control activities are vital to reduce negative flood impacts in the Mekong River basin, they also negatively impact groundwater resources in the area.
KW - Flood
KW - Groundwater resources
KW - Monsoon region
KW - Recharge
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U2 - 10.1016/j.jhydrol.2007.04.017
DO - 10.1016/j.jhydrol.2007.04.017
M3 - Article
AN - SCOPUS:34250616320
VL - 340
SP - 233
EP - 243
JO - Journal of Hydrology
JF - Journal of Hydrology
SN - 0022-1694
IS - 3-4
ER -