Evaluation of catchment characteristics in Pahang

Catchment is one way to overcome the problem of flooding, particularly in rapidly growing urban areas. The main aim of the design of a catchment area is for collecting water that falls to earth as rain, and make sure all of water will flow from the catchment area into the same outlet. Catchment outlet is the main stream where it flows into the river or the place where it empties into the lake, estuary, wetland, or ocean. The objectives of this study are to examine the physical characteristics of a catchment and to identify patterns of rainfall in the state using the physical characteristics of the catchment. This catchment study involves two physical characteristics of catchment namely area and average rainfall in each catchment area. The data required for this study was obtained from the Department of Irrigation and Drainage (DID) Pahang. In addition, data on rainfall and catchment area were also obtained through Graphic Information System (GIS). With annual rainfall data, the average monthly rainfall for each catchment area can be analyzed. At the end of the study, the physical characteristics appropriate to the selected catchment areas in Pahang will be identified. In addition, this study can verify the functionality of the existing catchment areas in the state that can be used as the initial planning to the relevant authorities such as Department of Irrigation and Drainage (DID) or government to prevent the occurrence of unwanted disaster.