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Analisa Penilaian Kinerja Fisik Bangunan Irigasi Daerah Irigasi (DI) Purworejo, Desa Tunjungtirto, Kecamatan Singosari Ansonya Ansonya; Danang Bimo Irianto; Galih Damar Pandulu
Prosiding SENTIKUIN (Seminar Nasional Teknologi Industri, Lingkungan dan Infrastruktur) Vol 8 (2025): PROSIDING SENTIKUIN
Publisher : Fakultas Teknik Universitas Tribhuwana Tunggadewi

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Abstract

Irrigation networks play a strategic role in ensuring water availability for agricultural production. This study was conducted in the Purworejo Irrigation District in Tunjungtirto Village, Singosari Subdistrict, Malang Regency, with a service area of 128 ha. The study aimed to assess the physical condition and operational functionality of the network and to determine the Irrigation System Performance Index as a basis for formulating remedial measures. The research approach involved direct field surveys combined with quantitative assessments using performance evaluation parameters for irrigation infrastructure. The aspects analyzed included the structural stability of the facilities, the operational reliability of the water gates, the smoothness of flow distribution, the level of sedimentation, and the condition of supporting facilities. The findings revealed infrastructure degradation characterized by concrete cracks, deterioration of the lining, corrosion of metal components, and sediment buildup that reduces flow capacity. Based on the calculations, the physical performance index reached 47.83%, which falls into the “severely damaged” category with a high level of functional impairment. These conditions indicate that water distribution services are not yet operating optimally. Therefore, a comprehensive rehabilitation program is needed, including structural repairs, channel cross-section normalization, replacement of control devices, and improvements to the drainage system to restore the irrigation network’s performance in a sustainable manner.
Analisis Keandalan Bangunan Irigasi pada Daerah Irigasi (DI) Jangkung, Kabupaten Malang Arie Fahrurozi; Danang Bimo Irianto; Pamela Dinar Rahma
Prosiding SENTIKUIN (Seminar Nasional Teknologi Industri, Lingkungan dan Infrastruktur) Vol 8 (2025): PROSIDING SENTIKUIN
Publisher : Fakultas Teknik Universitas Tribhuwana Tunggadewi

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The Jangkung Irrigation District (DI) in Dadapan Village, Wajak Subdistrict, Malang Regency, is a vital piece of infrastructure serving 39 ha of farmland. As it ages, this irrigation system is experiencing a decline in performance due to the physical degradation of its infrastructure. This study aims to evaluate the physical performance of the Jangkung DI infrastructure to determine the health status of the network and prioritize its maintenance. The methodology employed combines qualitative visual inspections in the field with quantitative analysis based on Ministry of Public Works and Public Housing Regulation No. 12/PRT/M/2015. The assessment focused on five main components of the physical infrastructure: main structures, conveyance channels, structures along the conveyance channels, drainage channels, and inspection roads. The results of the study show that the Main Structures have a performance weight of 78.00%, indicating that structural integrity remains good but is hindered by invasive vegetation. Meanwhile, the Conveyance Channels recorded a score of 58.04%, Structures on Conveyance Channels 52.50%, Discharge Channels 50.00%, and Inspection Roads 55.00%. Cumulatively, the Irrigation System Performance Index (IKSI) for the Jangkung Irrigation District (DI Jangkung) is 59.79%. According to standard classifications, this rating places the Jangkung Irrigation System in the “Damaged” category, where the system’s functionality is severely impaired and requires major repairs or replacement. Recommended technical measures include normalizing the drainage channels, routinely clearing vegetation, and making permanent repairs to the water gates to maintain the efficiency of water distribution to farmers.