Perhitungan ketersediaan air permukaan di Indonesia berdasarkan data satelit

Abstract

Information on water availability is vital in water resources management. Unfortunately, information on the condition of hydrological data, either river flow data, or rainfall data is very limited temporally and spatially. With the availability of satellite technology, rainfall in the tropics can be monitored and recorded for further analysis. This paper discusses the calculation of surface water availability based on rainfall data from TRMM satellite, and then Wflow, a distributed rainfall-runoff model generates monthly time runoff data from 2003 to 2015 for all river basin areas in Indonesia. It is concluded that the average surface water availability in Indonesia is 88.3 thousand m3/s or equivalent to 2.78 trillion m3/ year. This figure is lower than the study of Water Resources Research Center 2010 based on discharge at the post estimated water that produces 3.9 trillion m3/year, but very close to the study of Aquastat FAO of 2.79 trillion m3 / year. The main benefit of this satellite-based calculation is that at any location in Indonesia, potential surface water can be obtained by multiplying the area of the catchment and the runoff height.

Rancang Bangun Sistem Monitoring Kekeruhan Dan TDS Berbasis Internet of Things

“…Indonesia adalah salah satu negara dengan ketersediaan air berlimpah. Menurut Radhika et al (2017), ketersediaan air permukaan sekitar 88,3 ribu m 3 /detik atau 2,78 triliun m 3 /tahun. Namun kualitasnya semakin memburuk, sehingga harus dilakukan pengolahan terlebih dahulu sebelum dikonsumsi (Kristianto 2017) (Yushananta 2021).…”

Quantification of Environmental Flow Requirement for some Rivers in West Java

“…Assessing the impact of EFR on other water users is carried out by calculating the water balance in the RBT. The data on available water and dependable flow are taken from (Radhika, Firmansyah, & Hatmoko, 2017), while the water demand is from (Direktorat Bina Penatagunaan Sumber Daya Air, 2016). The higher EFR makes less water available for other water users such as DMI and irrigation.…”