Assessment of Groundwater Vulnerability using COP Method to Support the Groundwater Protection in Karst Area

Abstract

The karst landform holds considerable water resource potential and is known for its underground rivers. On the other hand, the high porosity carbonate rocks on this landform cause the decrease of the natural protection function against groundwater pollution. Hence, the analysis of groundwater vulnerability in the karst area is prominent before making the spatial planning regulation. This recent study aimed to analyze the groundwater vulnerability in the karst area located in a part of Umbulrejo Village, Yogyakarta, Indonesia, and proposed action in groundwater protection. The method used in this research was based on the COP method. The data acquisition was conducted by survey method both for primary and secondary data. The COP (Concentration of flow, overlaying layers, and precipitation) analysis was supported by ArcGis software. The analysis of groundwater vulnerability showed that there were two vulnerability classes, i.e., very high (48.6%) and high (51.4%). These results were influenced mainly by the close distance of the recharge area to swallow holes and the lithology type (karst), which contributed to a very high value in reducing protection against groundwater. A proposed action to support groundwater protection is regulating the land utilization in the area of the settlements.

Tinjauan Literatur Sistematis dan Analisis Bibliometrik Penelitian Kerentanan Airtanah di Indonesia (2013-2021)

“…Penelitian kerentanan airtanah selain memiliki keragaman secara lokasi juga memiliki keragaman secara metode yang digunakan. Hasil tinjauan literatur sistematik menunjukkan ada beberapa metode yang digunakan dalam penelitian kerentanan airtanah di Indonesia diantarnaya GOD (Sukmawati Rukmana et al, 2020;Widodo et al, 2021), DRASTIC (Aribowo et al, 2021b;Kesuma et al, 2017;Koesuma et al, 2021;Machdar et al, 2018;Putranto & Aribowo, 2020;Wicaksono et al, 2013), HGZ (Klaas et al, 2017(Klaas et al, , 2018, COP (Yogafanny & Legono, 2021), APLIS (Syafarini et al, 2021), SVV (Aribowo et al, 2021a), EPIK (Riyanto et al, 2020;Syahidin & Murti, 2021), AVI Putranto & Yusrizal, 2018;Siswoyo & Azhar, 2019), SINTACS dan SINTACS Lu (Ayu Wandari et al, 2020;Primastuti & Kusratmoko, 2018), SI (Marjuanto et al, 2019) , DRANTHVP (Ahadiah & Widyastuti, 2020), PCSM (Putranto & Marjuanto, 2021). Selain satu metode tunggal ada juga yang menggunakan integrasi beberapa metode diantaranya GOD dan DRASTIC , AVI -GOD -SINTACS -DRASTIC (Nugraha et al, 2020)…”