PERHITUNGAN HUJAN EFEKTIF DENGAN METODE SCS-CN DAN PENGARUHNYA TERHADAP HIDROGRAF SATUAN

Anggi Nidya Sari(1), Joko Sujono(2), Rachmad Jayadi(3),
(1) Universitas Bengkulu, Indonesia
(2) Universitas Bengkulu, Indonesia
(3) Universitas Bengkulu, Indonesia

Abstract


The change of landuse at watershed (DAS) could influence that watershed’s condition. This affects runoff condition or changed of discharge of watershed. Lack of attention toward water resource management causes low support capacity of DAS such as lack of infiltration capacity or lack of water storage capacity. The understanding about process and how much effective rainfall happens including influencing factors are very needed as model to apply water
management and use system of field more effective. This research was conducted in five DAS of DI Yogyakarta and DAS in Central Java area. Those five DAS were DAS Code in Pogung, Code in Kaloran, Gajahwong in Papringan, Bogowonto in Pungangan and Progo in Badran. Effective rainfall method can be analysis by SCS-CN method. Effective rainfall obtained from  these methods would be used for unit measurement of flood discharge design with unit hydrograph method.The result of research showed that The value of effective rainfall varied well from SCS-CN method. The design for flood discharge measurement with unit hydrograph method to compared with analysis frequency method. Initial abstraction is also very influential in the SCS-CN method.


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References


Adji. 2011. Pemisahan Aliran Dasar Bagian Hulu Sungai Bribin pada

Aliran Gua Gilap. di Kars Gunung Sewu, Gunung Kidul, Yogyakarta.

Jurnal Geologi Indonesia. Vol. 6 No. 3, hal : 165-175.

Bambang Triatmodjo. 2010. Hidrologi Terapan. Beta Offset: Yogyakarta.

Chow, V.T., Maidment, D.R., and Mays, L.W. 1988. Applied Hydrology.

McGraw-Hil Book Company: NewYork.

Ellida Novita Lydia. 2012. Pola Agihan dan Pengaruhnya Terhadap Banjir

Rancangan. Tesis. Magister Pengelolaan Bencana Alam Universitas Gadjah Mada.

Joko Sujono. 1998. Penurunan Hidrograf Satuan dengan Data Hujan Harian. Jurnal Media Teknik No. 1 Tahun XX Edisi Februari. Fakultas Teknik. Universitas Gadjah Mada. Yogyakarta.

Maya Amalia., 2011. Analisa Peningkatan Nilai Curve Number terhadap Debit Banjir Daerah Aliran Sungai Progo. Info Teknik,. Vol. 12. No. 2, hal : 35-39.

Murtiono, U.H. Kajian Estimasi Volume Limpasan Permukaan, Debit Puncak Aliran dan Erosi Tanah dengan Model Soil Conservation Service (SCS). Rasional dan Modified Universal Soil Loss Equation (Musle). Forum Geografi. Vol. 22, hal: 169-185.

Sri Harto Br. 2009. Hidrologi: Teori, Masalah, Penyelesaian. NafiriOffset: Yogyakarta.




DOI: https://doi.org/10.33369/ijts.8.1.27-38

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