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All Journal JURNAL TEKNIK HIDRAULIK Journal of Applied Agricultural Science and Technology
Irianto, Eko Winar
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Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Engineering

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Flood Modelling of Premulung River, Bengawan Solo Pangestu, Ferdi; Kuntoro, Arno Adi; Irianto, Eko Winar
Journal of Applied Agricultural Science and Technology Vol. 8 No. 1 (2024): Journal of Applied Agricultural Science and Technology
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jaast.v8i1.183

Abstract

Premulung River or commonly known as Kali Premulung is one of many branches of Bengawan Solo River in its upstream area. This river pass through one of the most historical cities in Central Java, Surakarta. The overcapacity of this river leads to flood event that has a negative impact on humans. The purpose of this research is to analyze the Premulung River capacity and simulate the flood caused by rainfall design. The hydrological matter was analyzed using Hydrognomon and HEC-HMS while flood modelling was analyzed using HEC-RAS software one- and two-dimension (1D & 2D) simulation. Model calibrations were carried out based on historical flood events (depth, duration, and area of inundation) and local interview due to data limitation. Based on the simulation, the flood modelling shows that the current capacity of Premulung River cannot accommodate its peak discharge for two (Q2) and twenty years (Q20) return period flood. There are two main spots identified flooded due to Q2 flood with depth varies from 40 to 80 cm and duration from 4 hour to 7 hour. For Q20 flood, there are also two same spots identified flooded with depth varies from 1.2 m to 1.8 m and duration from 6 hour to 9 hour. The result of this study can be a reference for flood dike design in the future which still require further detailed investigation.
Pengembangan Kriteria Status Mutu Ekosistem Danau Sebagai Bagian Dari Indikator Pengelolaan Terpadu Wilayah Sungai Irianto, Eko Winar; Triweko, Robertus Wahyudi; Yudianto, Doddi
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.v1i1.227

Abstract

High rate of pollution on the watershed has impacted to deteriorate water quality reservoirs. Officially, Quality Status of Reservoir Ecosystem has not been established yet. So, this study describes the accomplishment of integrated watershed management using Quality Status of Lake Ecosystem criteria (SMED) formulated by ministry of environment. The application of the criteria to Saguling and Sutami reservoirs datas shows that quality status of the reservoir ecosystems are in threat conditions. In order to apply the SMED criteria for assessment of quality ecosystem in reservoir, the advance experiments are still needed mainly for the additional indicators as following: 1) integration blue­algae and biodiversity indicator with biodiversity index; 2) suitability of land erosion indicator connected with reservoir design of erosion rate; 3) shifting of siltation lake indicator siltation reservoir indicator in relation with the percentage of dead storage volume; 4) integration hydroelectric power and water resources exploitation associated with the hidrological reservoir and water balance; 5) suitability of fish cage calculation in reservoir, 6) suitability of water quality indicator related with water quality standard; 7) addition of corrosivity index and quality of bottom sediment in reservoir. To facilitate apply the SMED for the assessment of reservoir ecosystem.
Co-Authors Arno Adi Kuntoro, Arno Adi Doddi Yudianto Pangestu, Ferdi Triweko, Robertus Wahyudi