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Journal : Journal of Civil Engineering

APPRAISAL ANALYSIS OF IRRIGATION SYSTEM MANAGEMENT BASED ON SUSTAINABLE DEVELOPMENT CONCEPT IN TILONG IRRIGATION AREA OF KUPANG REGENCY Lidya Kini; Nadjadji Anwar; Theresia Sri Sidharti
Journal of Civil Engineering Vol 29, No 2 (2009)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (411.839 KB) | DOI: 10.12962/j20861206.v29i2.1730

Abstract

The sustainable concept of irrigation system appraisal was based on Sustainable Development Concept with 3 components/pillars, Social, Economy and Environment that the balancing of that three values are that sustainable condition. According to Regulation issued by Ministry of Public Works No.30/PRT/M/2007,the irrigation system comprises of Irrigation Infrastructure, Irrigation Water, Irrigation Management Institution and Human Resources. This research combined the concepts of sustainability and irrigation system management. According to research result, there were 15 indicators of Tilong Irrigation System Sustainability based on the calculation method of AHP. The research result for Sustainable Appraisal of Tilong Irrigation System was Sub DI VII in the Sustainable condition, Sub DI V in the condition of Equitable, Sub DI II in the Sustain condition of environment, Sub DI I in the Environment Sustain Condition, Sub DI III in the Social Sustain Condition, Sub DI IV in the condition unsustain, Sub DI VI in the condition unsustain.
A STUDY OF SEDIMENT DELIVERY RATIO USING AVSWAT-X IN THE CATCHMENT AREA OF PACAL RESERVOIR OF BOJONEGORO Zulis Erwanto; Nadjadji Anwar; Bambang Sarwono
Journal of Civil Engineering Vol 30, No 2 (2010)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1080.875 KB) | DOI: 10.12962/j20861206.v30i2.1722

Abstract

Recently, the flood intensity that brought by tributary rivers in the catchment area of Pacal reservoir has increased, both in the quantity of runoff and sediment volume. The research aims to set up erosion rate modeling and find the formulation of the Sediment Delivery Ratio (SDR) at Pacal reservoir. The research used USLE and MUSLE methods as comparator to find sediment yield accuracy at Pacal reservoir, by applying ArcView SWAT-X software. Total average annual erosion rate in the catchment area of Pacal reservoir which has area 82 Km2 calculated using USLE and MUSLE methods are 159,31 ton/ha/yr and 582 ton/ha/yr respectively. MUSLE method resulted SDR which is most closely to SDRobservation if it is compared to USLE method. In this research, MUSLE - Sediment-Discharge Rating Curve method has evaluation values MSE = 0,08; RMSE = 0,29; and Nash = 0,75. Furthermore, Sediment Delivery Ratio at catchment area of Pacal reservoir can be formulated as 0,29 3,83. DAS Waduk Pacal SDR A with value of SDRZulis = 0,27 and sediment yield obtained from MUSLE method equal to 157,40 ton/ha/yr, while from USLE method equal to 43,09 ton/ha/yr. Evaluate sediment yield of MUSLE from SDRZulis to formulation of SDR of former researcher was value of Nash = 0,89; MAE = 0,01. Based on the research result, it is expected that the institution which has responsibility in managing the catchment area of Pacal reservoir would pay high attention to zonation map of erosion risk level and can overcome sedimentation in Pacal reservoir.