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All Journal Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Jurnal Teknik Sipil Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering)
Mohamad Wawan Sujarwo
Universitas Jember
Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Engineering

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Assesment of morphometric and hydrological properties of smalls watersheds in East Java Regions Mohamad Wawan Sujarwo; Indarto Indarto; Ega Wiratama; Bobby Teguh
Jurnal Teknik Sipil Vol 26 No 2 (2019)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jts.2019.26.2.2

Abstract

This paper presents the identification, assessment and visualization of physical, topographic, morphometric and hydrological properties of small watersheds in East Java Regions.  About 45 small watersheds were used for the analysis.  Physical propertis i.e: soil type layers, land use, etc were obtained by cropping the GIS layers with a watershed boundary. Then the ASTER G-DEM2 was used to derive morphometric properties of the watersheds. Furthermore, hydrological properties are derived statistically by analyzing available rainfall and discharge data. Parameters were selected to represent each watersheds properties. Finally, simple correlation analyses through the selected parameters were used to interpret the relation between physical, topographical, morphometric and hydrological properties of the watersheds. The resut show that some watersheds show the similtarity in certain parameters.Artikel ini menyajikan identifikasi, penilaian dan visualisasi sifat fisik, topografi, morfometrik dan hidrologi daerah aliran sungai kecil di Wilayah Jawa Timur. Empat puluh empat (44) DAS digunakan untuk analisis. Sifat fisik (yaitu, jenis tanah dan penggunaan lahan) diperoleh dengan memotong lapisan GIS dengan batas daerah aliran sungai. Kemudian ASTER G-DEM2 digunakan untuk menurunkan sifat morfometrik daerah aliran sungai. Selain itu, sifat hidrologis diperoleh dengan menganalisis data curah hujan dan debit yang tersedia. Parameter yang dipilih adalah untuk mewakili setiap properti daerah aliran sungai. Akhirnya, korelasi sederhana antara sifat-sifat fisik, topografi, morfometrik, dan hidrologi daerah aliran sungai. Hasil penelitian menunjukkan bahwa beberapa DAS menunjukkan kesamaan dan perbedaan pada parameter morfometrik dan hidrologi.
Sensitivity Analysis on Soil and Water Assesment Tool (SWAT) Model at Brantas Watershed, East Java Indonesia Mohamad Wawan Sujarwo; Indarto Indarto; Marga Mandala
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 19, No 3 (2022): November 2022
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1185.287 KB) | DOI: 10.14710/presipitasi.v19i3.498-509

Abstract

Brantas Watershed and its tributaries (approximately 14,103 km2) are essential in supplying water for About 30% of the East Java province population. Management of water resources in this watershed has become a challenging issue. The modelling processes' conformity and results to mimic the existing hydrological processes are still in question. This study aims to analyze sensitive parameters of the SWAT (Soil & Water Assessment Tool) model on the significant watershed. The input model is climate and spatial (DEM, soil layer, LULC) data. The observes the hydrological processes monthly and annually from the model result. Next, Sensitivity analysis using the SWAT-CUP tool and SUFI algorithm shows 18 sensitive parameters. The nine (9) parameters have a more than 50% sensitivity level. The four (4) correlated to the soil layer's runoff generation and water movement. Then, eight (8) parameters are related to baseflow calculation. Simulation results illustrate the strong effect of climate change (especially rainfall) on water yield and sedimentation.
Flood Mitigation Priority Strategy to Reduce Community Vulnerability in the Downstream Area of the Setail Watershed, Banyuwangi Gigik Nurbaskoro; Indarto Indarto; Elida Novita; Mohamad Wawan Sujarwo
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 6 (2025): December 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtepl.v14i6.2216-2228

Abstract

Floods that repeatedly occur in the downstream area of the Setail Watershed have caused significant damage to infrastructure, community livelihoods, and social systems in the region. This condition demands the implementation of effective and sustainable mitigation strategies to reduce flood risks and impacts. This study aims to determine priority flood mitigation strategies to reduce community vulnerability in the downstream area of the Setail Watershed. The identification of mitigation criteria was first conducted through interviews with flood-affected communities to capture relevant local factors. These criteria were then discussed with disaster mitigation experts and stakeholders, and the results of the questionnaires were analyzed using the Analytical Hierarchy Process (AHP) method to evaluate and rank the mitigation strategies. The results show that the three main priority strategies are flood risk mapping with a score of 0.22, community education and awareness with a score of 0.18, and zoning and spatial planning with a score of 0.15. These strategies are expected to serve as the basis for the preparation of local government action plans to minimize future flood impacts and enhance community resilience and well-being.
Co-Authors Bobby Teguh Ega Wiratama Elida Novita Gigik Nurbaskoro indarto indarto Indarto Indarto Mandala, Marga