SPILLWAY DESIGN PLANNING AND EMERGENCY ACTION PLAN FOR JENELATA DAM IN GOWA DISTRICT, SOUTH SULAWESI
Makassar City is an area that is often hit by floods during rainy season and water shortages during dry season. The extreme weather that occurred on January 22-24 2019 in the Makassar City area caused 61 sub-districts spread across 13 districts/cities to be flooded. Therefore, the construction of...
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| Format: | Final Project |
| Language: | Indonesia |
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| Online Access: | https://digilib.itb.ac.id/gdl/view/55799 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Makassar City is an area that is often hit by floods during rainy season and water
shortages during dry season. The extreme weather that occurred on January 22-24
2019 in the Makassar City area caused 61 sub-districts spread across 13
districts/cities to be flooded. Therefore, the construction of Jenelata dam is
planned. Jenelata dam with a watershed area of 221.22 km2 is a dam to be built in
Gowa Regency, South Sulawesi. One of Jenelata dam main components is spillway
which has a function to overflow excess water in the reservoir so it will not exceed
the design capacity which could potentially damage the dam. The spillway is
designed with side spillway type with a length of 882.60 m from flow guide channel
to stilling basin. Because every dam has a potential of dam break due to disasters
such as earthquake or other events that can cause the dam break, an Emergency
Action Plan is required to minimize losses through ensuring the safety of life and
property. Flood hydrograph modeling caused by dam break is modeled with HECHMS
resulting the most extreme dam break scenario is caused by overtopping with
peak discharge of 48726.47 m3/s. Flood inundation modeling is modeled with HECRAS,
where the inundation area caused by overtopping is 20842.48 ha. The results
of the inundation map are then used as the basis to determine hazard zone on the
flood inundation area and draft an Emergency Action Plan in the form of
evacuation map and early warning system.
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