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Putu Aryastana
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Paduraksa : Jurnal Teknik Sipil Universitas Warmadewa
Published by Universitas Warmadewa
ISSN : 23032693     EISSN : 25812939     DOI : https://doi.org/10.22225/pd.6.2.482.108-122
Core Subject : Social, Engineering,
Civil Engineering, Building, Construction & Architecture Environmental Science
PADURAKSA: Jurnal Teknik Sipil Universitas Warmadewa, 2303-2693 (Print ISSN), 2581-2939 (Electronic ISSN) is a journal of civil engineering provides a forum for publishing research articles or review articles which published by Warmadewa University Press jointly with Progam Studi Teknik Sipil, Fakultas Teknik dan Perencanaan, Universitas Warmadewa. This journal is also dedicated to provide an intellectual space of scholarly discussion how journal of civil engineering able to create the new global formation of civil engineering and similar issues. This journal has been distributed by Progam Studi Teknik Sipil, Fakultas Teknik dan Perencanaan, Universitas Warmadewa started from Volume 1 Number 1 Year 2012 for Print and Oline from Volume 3 Number 1 Year 2014 to present. This journal encompasses original research articles, review articles, and short communications, including: Civil Engineering; Water Resources; Construction Management; Transportation; Structure; Geotechnics; Environment; Others Engineering
Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur
Articles 1 Documents
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Search results for , issue "1-9" : 1 Documents clear
Analisa debit banjir rancangan Bendungan Palasari menggunakan HEC-HMS Ni Luh Putri Prabandari; I Putu Gustave Suryantara Pariartha; Silvia Gabrina Tonyes
PADURAKSA: Jurnal Teknik Sipil Universitas Warmadewa 1-9
Publisher : Program Studi Teknik Sipil, Fakultas Teknik dan Perencanaan, Universitas Warmadewa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22225/pd.14.1.11181.1-9

Abstract

The Palasari Dam is a rock fill structure with a flood storage capacity of 10.37 million m³ and encompasses a catchment area of 40.75 km². In recent years, catastrophic climate changes have caused considerable variations between drought and intense rainfall, heightening the danger of dam failure owing to abrupt increases in water volume. This study is to assess the anticipated flood flow in the Palasari Watershed utilizing the Soil Conservation Service-Curve Number (SCS-CN) methodology within the HEC-HMS software. The utilized data include maximum annual rainfall from the CHIRPS satellite for the years 2004 to 2023, land use information retrieved from the Indonesia Geospatial Portal, and soil type data derived from HWSD v.2 (FAO). Simulations were performed for recurrence intervals of 5, 10, 25, 50, 100, and 1000 years, in addition to the Probable Maximum Flood (PMF). Validation indicates that the SCS approach in HEC-HMS yields greater flood discharge predictions than the Nakayasu method utilized in the 2018 Special Study of the Palasari Dam. The minimum discharge recorded at a 5-year return period was 64.60 m³/second, whilst the maximum discharge reached during the Probable Maximum Flood (PMF) was 710.70 m³/second. A notable discrepancy is evident in QPMF, with the SCS method documenting a discharge of 710.70 m³/second, surpassing the Nakayasu method's output of 686.07 m³/second. The SCS-CN method demonstrates a more conservative approach in calculating flood discharge, hence enhancing the safety margin in dam planning. Conversely, HEC-HMS offers advantages in assessing lag time and its integration with GIS, rendering it a more pragmatic method for water resource management in Indonesia. This research significantly enhances the formulation of Emergency Action Plans (EAP), especially in the context of dam failure analysis, aimed at mitigating risks associated with high flooding.

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