DEVELOPING A CONCEPTUAL MODEL OF GEOMORPHIC CHANGE FOR CHANNEL MANAGEMENT PROPOSES: A CASE OF LANGAT RIVER BASIN (Membangunkan Model Konsep Perubahan Geomorfik Bagi Tujuan Pengurusan Saliran: Kajian Kes di Lembangan Sungai Langat)

Abstract

This article examines channel changes using predictive model of geomorphic change in the LangatRiver catchment. River geomorphic change resulted from a number of variables control such asclimate, geology, water discharge, sediment influx, the bed and bank characteristics, vegetation coversand human interference. Three variables found to be satisfied to develop the dynamic model ofgeomorphic change in the Langat River catchment namely channel flow regime, channel competenceand catchment sediment production (QMAG, QVAR, SEDO, COMP). These computer-generated ofconceptual model provides the basis forms to which any particular section of Langat River could bechange as demonstrate by flow levels, morphological units and frequency of inundation linkagesmodel in the selected section of Langat River. The model found to be useful in providing theinformation whereby morphology, local and regional hydraulic conditions can be discussed, describedand quantifies. It also can be act as an alternative to river management system to guide planners andengineers involved in the management of the river or its surrounding corridor.