THE POTENTIAL OF RAINFALL AND ITS IMPACT TO GROUNDWATER STORAGE IN JAVA ISLAND

https://doi.org/10.22146/ijg.2255

Setyawan Purnama(1*)

(1) 
(*) Corresponding Author

Abstract


The objectives of the study are to map the distribution of rainfall in Java, to
analyze its potential and the impact to groundwater storage. To achieve those
goals, rainfall distribution is mapped using isohyet method. From the average
distribution of monthly rainfall, the annual potential of rainwater on every
watershed was calculated. Afterwards, the groundwater storage was analyzed and
counted by applying the water balance concept. The results of the study show that
the mean of the highest annual rainfall is 4082 mm which occurs on Cisadane-
Ciliwung watershed and the lowest one is 1421 mm on Citarum Hilir watershed.
From the rainfall potential, Cisadeg-Cikuningan watershed has the highest rainfall
potential at the amount of 25342 million m31month and Grindulu Panggul
watershed has the lowest potential at the amount of 3678 million m3lmonth.
Meteorologically, Cisadeg-Cikuningan watershed has the highest groundwater
storage at the amount of 6088 million m31yearand the lowest amount of it occurs
on Madura watershed at 78 million m3lyear.

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DOI: https://doi.org/10.22146/ijg.2255

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Accredited Journal, Based on Decree of the Minister of Research, Technology and Higher Education, Republic of Indonesia Number 30/E/KPT/2018, Vol 50 No 1 the Year 2018 - Vol 54 No 2 the Year 2022

ISSN 2354-9114 (online), ISSN 0024-9521 (print)

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