PERFORMANCE AND DESIGN OF THE BIFURCATION STRUCTURE AT TOILI RIVER
I W Sutapa [1]*
1Department of Civil Engineering, Tadulaku University, Central Sulawesi, 94118, Indonesia.
[1]* Corresponding author: [email protected]
DOI: https://doi.org/10.20885/icsbe.vol4.art2
ABSTRACT
One of The flooding of June 18, 2019 caused damage to the check dam structure on the Toili River branch, causing flooding during the rainy season and water being unable to flow into the Mansahang River which irrigates the Toili irrigation network and the Moilong irrigation network during the dry season. The purpose of this study is to design a bifurcation structure by modeling river hydraulics so that water can be supplied to the Moilong Irrigation Area and Toili Irrigation Area and to provide a sense of security from the threat of water damage. The data needed are: hydroclimatological data, watersheds, and river situation maps. Based on the results of the HEC-RAS analysis and simulation, the bifurcation structure of alternative-2 was chosen. This condition is very satisfying, where during floods the water can flow proportionally to the river branches and during the dry season the water needs are met.
Keywords: Bifurcation Structure, Hydraulics Modeling, Toili River
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