HYDROLOGICAL ANALYSIS OF CIMANUK PROJECT, INDONESIA

Abstract

The role of runoff is one of the basic hydrologic data and plays an important role in design aspect of Hydrology and reservoir operation studies in all water resources systems. In several water resources projects it is required to predict the characteristics and quantity of streamflow sequences. Many existing projects had been designed on the basis of scanty hydrologic data. Even some of the incoming projects are also being designed with available hydrological data Cimanuk Project is located in West Java (INDONESIA) . The basin lies batween 6015' and 7°251 southern latitude and 107 40' and 108° 35' eastern longitude in the north oast,-.rn part of the province of West Java. Total catchment area is about 3600 km.2. The Climate in the Cimanuk basin is tropical with distinct wet and dry season,. Mean annual rainfall is about 2830 mm. The project has carried out studies regarding the problems of Cimanuk river since 1973. Levee/dike, groyn retaining wall are constructed along the down stream of Cimanuk river also terracing and check dam in upstream. The Government of Indonesia has proposed a multipurpose dam at Jatigede site. The aim of present study is as follows: (i) To generate monthly volume di rha rge at the site for a period of 50 years using Thomas Fiering Model, Two Tier Model, Method of Fragments and Disaggregation Model.