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World Journal of Engineering Research and Technology

( An ISO 9001:2015 Certified International Journal )

An International Peer Reviewed Journal for Engineering Research and Technology

An Official Publication of Society for Advance Healthcare Research (Reg. No. : 01/01/01/31674/16)

ISSN 2454-695X

Impact Factor : 7.029

ICV : 79.45

WJERT Citation

  All Since 2020
 Citation  172  110
 h-index  7  5
 i10-index  1  0

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Abstract

CLIMATE CHANGE IMPACTS ON GROUNDWATER IN THE KARST AREA OF BAUMATA, KUPANG

*Aisyah Ahmad, Noni Banunaek, Andreas Sinuhaji

ABSTRACT

This study aims to analyze historical climate trends and project future climate conditions up to the year 2055, while also assessing the impacts on groundwater availability in the karst area of Baumata Village, Kupang Regency. Historical climate data (2004–2024) and projections (2051–2055) were obtained from the Regional Climate Model (RCM) simulations of the CORDEX SEA-22 domain. Variables analyzed included precipitation, minimum temperature, maximum temperature, and average temperature. Field measurements of spring discharge, bore wells, and dug wells were also conducted. Results indicate a sharp projected decline in annual precipitation from 1,877.9 mm to –1,042.6 mm (a decrease of –2,920.5 mm/year or –155.5%), with a downward trend of –74.9 mm/year (p = 0.096). Temperature variables showed minor and statistically insignificant changes. The total spring discharge reached 283.61 liters/second, with the largest discharge found at Baumata Spring (200 liters/second). The projected decline in precipitation may lead to reduced recharge of karst aquifers, threatening long-term groundwater sustainability. This study highlights the need for ecosystem-based water resource management in response to climate change in dryland areas.

[Full Text Article] [Download Certificate] https://doi.org/10.5281/zenodo.18107860