ENIVRONMENT ASIA

Volume 15, No. 03, Month SEPTEMBER, Year 2022, Pages 48 - 57

Assessment of saltwater intrusion using geochemical chloride bicarbonate ratio method in cagayan de oro city, philippines

Geran John T. Flores, Gina C. Lacang

Abstract Download PDF

Groundwater is a common source of water in developing countries. However, these resources experienced significant pollution from anthropogenic activities, which affects the ability of these resources to support life. In the Philippines, numerical modeling is ubiquitously associated with saltwater intrusion (SWI), while the geochemical approach was documented to be considered scarce. This study attempted to document SWI in Cagayan de Oro using the geochemical chloride-bicarbonate ratio method. Influence of tidal fluctuations SWI, as well as determining the factors that are associated with SWI were statistically determined. While most of the groundwater wells were still considered normal, data shows that 3 of these were already intruded by saltwater. Particularly, the western coastal realms of the city including barangay Bulua, and Kauswagan recorded SWI values that are 51% greater than the SWI average of the city. Tidal oscillation was similarly found to statistically affect SWI, where records on high tide events showed 23% greater than on low tide phenomena.Etc...

Keywords

Cagayan de Oro; Groundwater Quality; Hydrochemistry; Saltwater intrusion

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