#TITLE_ALTERNATIVE#

• Main Author: Triutomi Sahan<br>NIM. 95004018, Rizhali
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/6695
• Institution: Institut Teknologi Bandung

<b></i>Abstract :</b><i><p align="justify"><br />The appointment of the city of Sofifi as the capital city of North Maluku Province has caused it to become a city with potentials for rapid development. In line with the development, the demand for an increase in water needs in various sector follows. Therefore, a balance between supply and demand needs to be analysed, also an alternative water supply to fulfill the demand at present and in the future, as well as to support the goverment in providing standard water for the city of Sofifi.<br /><br />The study covered analysis of precipitation, water supply by comparing two methods, i.e NRECA (National Rural Electrical Cooperation Agency) Method, and NAM (Netbor - Afstromning Model) Method, water demand, water balance, water allocation simulation and reliability of water supply system.<br /><br />The availability of Oba River water at a condition of very dry flow rate (Qso ono) of 0,758 m3/sec, in which the water demand of the city of Sofifi in 2005 with 0,237 m3/sec could be met and will remain to be met until the year 2030 with a level of demand of 0,700 m3/sec. Water supply from Oba River will experience water shortage entering the period of 2033, thus the alternative of shortage handling among others is by building dam at Oba River Basin.<br /><br />In order to manage water allocation according to priority, fairness and efficiency, a simulation of water allocation of Oba River was conducted in meeting water demand of the city of Sofifi by using Water Resources Management Model (WRMM) computer program. The simulation of water allocation consisted of several alternatives (scenarios), i.e water supply from Oba River (present and future condition) and water supply from Oba river with the alternative of darn construction.<br /><br />The reliability of water supply from Oba River for the city of Sofifi without darn construction in 2004 was 97,22 % and for the next years it continues to decrease up to year 2030, the reliability reaches 90,59 %, while the reliability of water supply of Oba River for the city of Sofifi with the alternative of dam construction in the year 2004 was 99,55 % and for the next years it continues to decrease until year 2030, the reliability reaches 96,45 %.<br /><br />