The evaluation of the potential of the catchment reservoir a case study of Huai Hin Kong reservoir in Pathumrat district, Amnatcharoen province

Abstract

The purpose of this study is to evaluate the potential of the catchment reservoir management to prevent flooding. Huai Hin Kong Reservoir, Pathumrat District, Amnatcharoen Province was used as a case study, by implementing the probability of failure and the reliability index of the Structural Reliability theory in 3 cases: Case1: when the water flow into the reservoir decreases, Case 2: when the storage capacity of the reservoir decreases, and Case3: when the water consumption decreases.  Using MonteCaro Simulation method for all 3 cases found that, Case 1: when the water flowing into the reservoir decreases by 0%, 5%, 10% and 15%, the probability of failure of area flood management decreases and the corresponding reliability index increases. Case 2: when water storage capacity of the reservoir decreases  by 0%, 5%, 10% and 15%, the probability of failure of area flood management increases. and the corresponding reliability index decreases. Case 3: when the water flowing out of the reservoir decreases by 0%, 5%, 10% and 15%, the probability of failure of area flood management decreases and the corresponding reliability index increases,  as Case 1. Thus, those involved in water management should consider Case 2 and develop a reservoir maintenance plan to prevent flooding.