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All Journal Forum Geografi JURNAL TEKNIK HIDRAULIK
Petrus Syariman, Petrus
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Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Engineering

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Potential of Mainstay Debit of Lematang River, South Sumatra for the Regional Planning for Irrigation at Dongku and Modong Syariman, Petrus; Kustaman, Kustaman
Forum Geografi Vol 13, No 1 (1999)
Publisher : Forum Geografi

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Abstract

District Muara Enim, South Sumatra Province has a potential region to develop an agriculture sector especially rice fields. The water resource such as Water Enim and Lamatang River support the capacity of the developing. Acording to the study in 1985 carried out by the BCEOM and Kampsax consultants, the lower Lematang region. Dangku Kiri, Dangku Kanan, and Modong with the total area of about 10.000 Ha has a highly potential to built rice field ith the technical irrigation. Based on the information, research of dependable flow of Lematang River to the irrigation requirement had been carried out by analyzing of all data collecting in those area  such as rainfall, climate, and discharge data. The result shows that the dependable flow of 20% probability of non exceedence is about 65.3 m3/sec. It is potential enough compare with the irrigation requirement of about 1.85 l/sec/ha or 18.5 m3/sec of total irrigation area. Technically, dependable flow of Lematang River is big enough but some constraints will appear especially in determining of free intake or weir because the river gradient is too low and the main  channel has been used by the people for navigation. To increase the accuracy of the research, an Automatic Water Level Recorder and one climatological station should be installed respectively in the alternative I location and in the irrigation area.
Potential of Mainstay Debit of Lematang River, South Sumatra for the Regional Planning for Irrigation at Dongku and Modong Syariman, Petrus; Kustaman, Kustaman
Forum Geografi Vol 13, No 1 (1999)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v13i1.465

Abstract

District Muara Enim, South Sumatra Province has a potential region to develop an agriculture sector especially rice fields. The water resource such as Water Enim and Lamatang River support the capacity of the developing. Acording to the study in 1985 carried out by the BCEOM and Kampsax consultants, the lower Lematang region. Dangku Kiri, Dangku Kanan, and Modong with the total area of about 10.000 Ha has a highly potential to built rice field ith the technical irrigation. Based on the information, research of dependable flow of Lematang River to the irrigation requirement had been carried out by analyzing of all data collecting in those area  such as rainfall, climate, and discharge data. The result shows that the dependable flow of 20% probability of non exceedence is about 65.3 m3/sec. It is potential enough compare with the irrigation requirement of about 1.85 l/sec/ha or 18.5 m3/sec of total irrigation area. Technically, dependable flow of Lematang River is big enough but some constraints will appear especially in determining of free intake or weir because the river gradient is too low and the main  channel has been used by the people for navigation. To increase the accuracy of the research, an Automatic Water Level Recorder and one climatological station should be installed respectively in the alternative I location and in the irrigation area.
Analisis Fenomena Kehilangan Air Sungai Cisuwarna Syariman, Petrus; Hendarmawan, Hendarmawan
JURNAL TEKNIK HIDRAULIK Vol 1, No 1 (2010): Jurnal Teknik Hidraulik
Publisher : Direktorat Bina Teknik Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32679/jth.v1i1.230

Abstract

Discharge from Cisuwarna River is one of the main inflows to Rawa Danau highly expected by local people either upstream or downstream.  Part of water loss of Cisuwarna caused not optimum domestic water use.   Water loss indication can be seen from the simulation results by using SSARR model that calculated discharge greater than observed.    The methods used for water loss analysis are simultaneous discharge measurement, rainfall – runoff  and coefficient correlation analysis, and geological map interpretation.  The analysis result has proven that the average water loss at Cisuwarna is about 12 .4 million cumec per year or about 45% of calculated discharge.  Water loss is assumed to flow into the fault before flowing into Rawa Danau.  Water deficit is always going through every year in Rawa Danau.Keywords:   Water loss, calculated discharge, rainfall­runoff, faults, water deficit.
Co-Authors Hendarmawan Hendarmawan, Hendarmawan Kustaman Kustaman, Kustaman