ALLOCATION OF WATER REQUIREMENTS ON THE CAPITAL CITY OF INDONESIA IN EAST BORNEO

• Main Author: Muttaqien, Nopriyandi
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/51388
• Institution: Institut Teknologi Bandung

The relocation of the capital city of Indonesia to East Kalimantan (Kutai Kartanegara and Penajam Paser Utara Districts) which is planned to be implemented in 2024 requires a plan to fulfill water reequirements in the Nation’s Capital City (NCC) Area. It is estimated that there will be population displacement of 1.5 million people to occupy 3 areas in the NCC. Based on the masterplan, it is planned that the water supply will be fulfilled through the Sepaku Semoi Dam, Batu Lepek Dam, Loa Kulu Intake,and Sepaku Intake. This study discusses about water allocation planning with the help of the DSS WEAP software from years 2024 (when the NCC was formed) to the next 25 years (2049) in the NCC Area based on 5 scenarios, scenario 1 (without Dam and Intake), scenario 2 (Sepaku Semoi Dam & Sepaku Intake), scenario 3 (Sepaku Semoi Dam, Sepaku Intake, Batu Lepek Dam), scenario 4 (Sepaku Semoi Dam, Sepaku Intake, Batu Lepek Dam, Loa Kulu Intake), and scenario 5 (Sepaku Semoi Dam, Sepaku Intake, and Loa Kulu Intake). The results of the analysis, it is found that on scenario 2 it is still not able to fulfill the requirements of water for NCC in 2024 (fulfillment frequency of domestic and non-domestic water requirements for NCC is only 91.67%), in scenario 3 on the years of 2024-2049 water fulfillment on NCC only reaches 98.82%, scenario 4 all water requirements can be fulfill, and scenario 5 on the years of 2024-2049 fulfillment frequency of NCC reaches 95.41%. On the analysis of economic feasibility, the results of second alternative for Loa Kulu Intake construction show that the NPV is Rp. 243,817,657,042.97, IRR 9,27% and BCR is 1.03. It was concluded that the best scenario is scenario 4 with the second alternative of the construction of Loa Kulu Intake.