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RESEARCH ON THE DERIVATION OF LANDUSES’ CURVE NUMBER USING SCS CN METHOD (CASE STUDY: KOTA DAMANSARA, SELANGOR) Report No.: NAHRIM.PKS.3/2012


Title : Research on the derivation of landuses' Curve Number, NAHRIM, 2012
Sypnosis : Hydrology data input such as rainfall, soil infiltration, wind, temperature, humidity and rate of evaporation are essential in flood and drainage system related projects. Those data will determine the amount or the quantity of runoff or flow from a catchment area to the particular project site. There are a range of methods in transforming the rainfall to runoff which we normally called the rainfall-runoff model such as rational method, time-area method and kinematic wave method. The other method used is through Soil Conservation Services (SCS) Curve Number (CN) Method. CN is a parameter derived based on soil type (hydrologic soil groups), soil moisture content and landuse (percentage of imperviousness). Parameter CN is available from most of the reference books; however it is derived for other countries which having different climate condition and dissimilar soils types compared to Malaysia. In view of this, an initiative has been taken to embark on a Research and Development (R&D) in deriving CN for different landuses and single catchment basis by choosing a pilot project in Kota Damansara. Four main categories of landuses in Kota Damansara catchment are namely: Bungalow or schools, Impervious (housing or shops), Fields (landscape or open space) and Pervious (forest or ponds). It is hopeful that the findings of this research could be used as a reference in most of the water related project adopting SCS CN Method for others catchment in Malaysia.
Price : Free
Prepared By : Research Centre for River Management
Report Owner : Institut Penyelidikan Hidraulik Kebangsaan Malaysia (NAHRIM)
Type of Report : Field Of Study
Geographical Reference : Klang, Selangor
Geographical Location-RBMUs : RBMU 15: Klang
Created : 11/19/2014 5:08:59 PM
Modified : 1/28/2015 1:24:08 PM