Flood Forecasting Using a Transfer Hydrograph Approach  

Oleh:

Anwar, Saihul

Jenis: Article from Journal - ilmiah nasional - terakreditasi DIKTI
Dalam koleksi: IPTEK: The Journal for Technology and Science vol. 21 no. 1 (Feb. 2010), page 33-39.
Topik: Transfer Hydro-graph; Unit Hydro-graph; Rainfall
Fulltext: Flood Forecasting.pdf (1.04MB)

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: MM48 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

Lihat Detail Induk

Isi artikel

This paper describes the development and application of a transfer hydro-graph approach to flood forecasting on the Cimanuk River at the city of Jatigede in West Java, Indonesia. The Transfer Hydro-graph (TH) is a transfer function that transforms total rainfall into a flood hydro-graph at the basin outlet. As opposed to the conventional unit hydro-graph approach which uses effective rainfall and direct runoff, the transfer hydro-graph uses the total rainfall and the direct runoff at the basin outlet. The Cimanuk river basin (drainage area : 1,442 km2) has four sub basins. It was found to be necessary to further extend the application of the transfer hydro-graph concept to include all channel routing effects. This because the rainfall at each sub-basin was found to be quite independent of the rainfall at other sub basins, and run off data were only available at the basin outlet at Jatigede. Using the available data, transfer hydro-graph were derived for each sub basin and later combined to give the runoff hydro-graph at Jatigede. The approach was tested against recorded rainfall-run off data at Jatigede and was found to give very reasonable results. For flows above 300 m3/second, the maximum error of prediction was less than 12 %.

Opini Anda

Klik untuk menuliskan opini Anda tentang koleksi ini!

Kembali