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Journal of Environmental Hydrology
ISSN 1058-3912 |
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Electronic Journal of the International Association for
Environmental Hydrology
JEH Volume 14 (2006), Paper 6 Posted May 31, 2006 A CONJUNCTIVE SURFACE WATER AND GROUNDWATER MODEL FOR INUNDATED FLOODPLAIN IN THAILAND
S. Chuenchooklin 1 2School of Engineering, Kyushu Tokai University, Japan ABSTRACT The interaction of groundwater and surface water induced by flooding in a floodplain with paddy fields was studied. A case study in the lower part of the Yom River in Phichit Province, Thailand was selected during the period 2002 to 2003, and a numerical model for conjunctive surface and groundwater flow was developed for an inundated floodplain. The alternating direction implicit method was applied for model solution. The estimation of hydrological components in the water budget model was based on field records and measurements, including field infiltration and daily water table elevation data. It was found that the average value of the seepage rate in this area was 16.2 mm/d per 1 m of flood depth. The model results showed that groundwater recharge during the flood and no-flood periods were above 70-75 % and 25-30 % of annual recharge, respectively. A comparison of the computed water tables to the observed data showed a high correlation. Reference: Chuenchooklin, S., T. Ichikawa, S. Patamatamkul, W. Sriboonlue, and C. Kirdpitugsa. 2006. A Conjunctive Surface Water and Groundwater Model for Inundated Floodplain in Thailand, Journal of Environmental Hydrology, Vol. 14, Paper 6. CONTACT: Mr. Sombat Chuenchooklin Department of Civil Engineering, Faculty of Engineering Naresuan University, Muang Phitsanulok, 65000 Thailand E-mail: Email:sombatc@nu.ac.th, sombatck@hotmail.com |
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