Hydrological behaviour of a drained agricultural peat catchment in the tropics. 1: Rainfall,runoff and water table relationships |
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| Authors: | Ayob Katimon Shamsuddin Shahid Ahmad Khairi Abd Wahab Md Hazrat Ali |
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| Institution: | 1. Department of Hydraulics and Hydrology, Faculty of Civil Engineering, University Teknologi Malaysia, 81310, Skudai, Johor, Malaysia;2. Department of Civil Engineering, Chittagong University of Engineering and Technology, Chittagong, 4349, Bangladesh |
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| Abstract: | AbstractHydrological data of a drained tropical peat catchment have been analysed through conventional quantitative hydrological approaches to characterize its hydrological behaviours and changes due to continuous drainage for a long period. The results show that the hydrology of the catchment is extremely dynamic and the catchment is flashy in nature. A decreasing trend in peak flow amount and an increasing trend in baseflow amount was observed in the catchment, indicating that continuous drainage has reduced the risk of both flooding and water scarcity in the catchment. Correlation analysis among rainfall, runoff and groundwater table reveals that saturation excess-near surface flow is the dominant mechanism responsible for rapid runoff generation in the catchment. Therefore, any physical alterations or disturbances to the upper part of the peat profile would definitely affect the overall hydrological behaviour of the peat catchment.Editor Z.W. Kundzewicz; Associate editor D. HughesCitation Katimon, A., Shahid, S., Abd Wahab, A.K., and Ali, M.H., 2013. Hydrological behaviour of a drained agricultural peat catchment in the tropics. Part 1: Rainfall, runoff and water table relationships. Hydrological Sciences Journal, 58 (6), 1297–1309. |
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| Keywords: | drained peat catchment rainfall water table runoff ratio tropics |
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