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Rainwater Harvesting to Increase Freshwater Carrying Capacity on Small Islands (Study Case : Pramuka Island)
Pugar Girdayanto (a*), Ahmad Munir (a), Peter Davey (b)

a) Universitas Hasanuddin, Jl. Perintis Kemerdekaan KM.10, Tamalanrea Indah, Kec. Tamalanrea, Kota Makassar, Sulawesi Selatan 90245, Indonesia
b) Griffith University, Nathan Campus, 170 Kessels Rd, Nathan Queensland 4111, Australia


Pramuka Island is a small island which is covered with dense housing settlement, being inhabited by 1.715 people and experiencing rapid population growth with increasing tourist visits every year (Cahyadi, 2015). As a result, there is a high demand for freshwater that exploits a large amount of groundwater on that island. On the other hand, research conducted by Cahyadi (2015) indicated that groundwater on Pramuka Island is below the minimum standard of drinking water. This report will discuss the effectivity of the rainwater harvesting system as a solution to the freshwater carrying capacity on Pramuka Island. To do this, it will analyse freshwater carrying capacity based on water balance calculation between freshwater supply with rainwater harvesting and potential freshwater demands for domestic use, tourism, and other activities. The results revealed that the scenario to use the whole island as rainwater catchment is enough to supply freshwater demand for about 27 years

Keywords: carrying capacity- freshwater scarcity- small island- rainwater harvesting

Topic: Renewable Energy

Plain Format | Corresponding Author (Pugar Septia Girdayanto)

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