POTENTIAL APPLICATION OF GREEN INFRASTRUCTURE FOR FLOOD MITIGATION IN CIREBON CITY
Floods that occur in Cirebon City are caused by various factors, such as reduced drainage capacity due to sediment and garbage disposed of by the community and slower flow because most of Cirebon City is in the lowlands. The still-conventional and environmentally-ignorant use of infrastructure al...
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| Format: | Final Project |
| Language: | Indonesia |
| Subjects: | |
| Online Access: | https://digilib.itb.ac.id/gdl/view/74391 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Floods that occur in Cirebon City are caused by various factors, such as reduced
drainage capacity due to sediment and garbage disposed of by the community and
slower flow because most of Cirebon City is in the lowlands. The still-conventional
and environmentally-ignorant use of infrastructure also exacerbates runoff due to
non-functioning infrastructure buildings. Therefore, this study attempts to
determine the potential of green infrastructure for flood control in Cirebon City.
This research collects secondary data from various related agencies in conducting
spatial analysis and SCS-CN (Soil Conservation Service – Curve Number) analysis
to determine the potential of green infrastructure locations, reduction of runoff
water, and development costs in flood control. The analysis revealed that the types
of green infrastructure that may be developed in Cirebon City are biological
reservoirs, infiltration ponds, infiltration ditches and dry ponds, with a total area
of 258.28 hectares or 6.54%. of Cirebon City. Surface water runoff can be reduced
by up to 4.06% of the total potential area of the site. 263,8 billion rupiahs is needed
for construction costs, land acquisition costs, and operation and maintenance costs
over 20 years for green infrastructure development. Meanwhile, the total benefit
based on losses due to flooding was 304.4 billion rupiah. The net present value
shows a positive price of 40.6 billion rupiah. For this reason, green infrastructure
in the form of bioreservoirs, infiltration ponds, infiltration ditches, and dry ponds
may be developed in Cirebon City, but the development costs are not sufficient to
reduce surface runoff. We can conclude that it is not efficient. |
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