IMPLEMENTATION OF RAINWATER HARVESTING SYSTEM IN MAKASSAR CITY (BASED ON CASE YOKOHAMA SMART CITY)
M. Yahya Siradjuddin (1*), Ananto Yudono (2), Arifuddin Akil (2), Farouk Maricar (3), Hidefumi IMURA (4), Akio ONISHI (5), Pei-I Tsai (4), Katsuhiko Yonezaki (4)
(1) Architecture Department, Faculty of Engineering, Hasanuddin University
*yahyasiradj70[at]gmail.com
(2) Urban Planning and Design Laboratory, Urban & Regional Development Department
Faculty of Engineering, Hasanuddin University
(3) Hydraulic Laboratory, Civil Department, Faculty of Engineering, Hasanuddin University
(4) Global Cooperation Institute for Sustainable Cities, Yokohama City University
(5) Faculty of Environmental Studies, Tokyo City University
Abstract
Makassar, the capital city of the South Sulawesi Province. The uncontrolled of urban built up area growth, as well as the lack implementation of Rain Water Harvesting (RWH) led to an increase of runoff coefficient, so the abundant volume of rainfall in the rainy season directly flows to the river and thrown into the sea. This is supported by the growth of population which triggered the urban built up area expansion as the effect of high migration to Makassar city. Due to this phenomena , the green open space is reduced and as coastal city which intrusion of seawater into land make city lack of ground plain water. Although rainfall range in Makassar City area is high, but the huge volume of rainfall not be utilized maximally yet. Some of Makassar area suffers from flood during rainy season but citizen lacks of plain water during dry season. Implementation of the concept of RWH in Makassar city, will be alternative solution to reduce flood areas and can be utilized by the community for landscaping / agriculture, cleaning activities and water amenities (fire).
Keywords: Rainwater Harvesting, Implementation, flood
Topic: Climate Change