DOI : https://doi.org/10.18517/ijaseit.10.2.10832

Sedimentation Management Strategy in River Estuary for Control the Water Damage in Downstream of Ayung River

I Gusti Agung Putu Eryani (1), Nurhamidah Nurhamidah (2)
(1) Civil Engineering Department, Faculty of Engineering and Planning, Warmadewa University, Terompong Street Number 24, Denpasar, 80239, Indonesia
(2) Civil Engineering Department, Faculty of Engineering, University of Andalas, Padang, West Sumatra, Indonesia, 25163
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How to cite (IJASEIT) :
Eryani, I Gusti Agung Putu, and Nurhamidah Nurhamidah. “Sedimentation Management Strategy in River Estuary for Control the Water Damage in Downstream of Ayung River”. International Journal on Advanced Science, Engineering and Information Technology, vol. 10, no. 2, Apr. 2020, pp. 743-8, doi:10.18517/ijaseit.10.2.10832.
Citation Format :
The Ayung River Basin is the largest watershed on Bali Island. Ayung River flows from Lake Batur and empties into Padanggalak beach. River estuary is an area of sediment material deposition that will form an alluvial formation. The deposition of sediment at the river estuary is due to the influence of river flow, tidal, and wave action on the beach. Sediments that settle at the river estuary can obstruct water flow to the sea, which can cause backwater and flooding to the mainland. The strategy of controlling sediment deposition in the river estuary is essential to reduce the water damage in the downstream area, which is usually used as a tourism area. Ayung River Estuary is one of the estuaries that experienced a massive deposition; on the other hand, the Ayung River Estuary is widely used as a tourism area. The data used are primary and secondary—primary data obtained by a survey to the location and secondary data obtained from supporting data for analysis. Sedimentation occurs in the Ayung river estuary. It is due to soil type, topography, and hydro oceanographic condition. Besides, changes in the regional functions, such as temple construction, also affect the sedimentation process in the estuary. Sedimentation management strategies that can be carried out for the Ayung River estuary are the first is with the jetty construction method, which begins with the normalization of the downstream river, and the second is maintenance dredging, which is carried out through cooperation between the government and the community. Besides being used as sediment control, the jetty that was built can be developed as a tourist location around the estuary area.

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