@article{Dinh Tuan Hai_Trinh Thi Phin_2019, title={DETERMINE THE VULNERABILITY OF URBAN SURFACE WATER RESOURCES IN RACH GIA CITY, VIETNAM USING GEOGRAPHIC INFORMATION SYSTEM}, volume={17}, url={https://geomatejournal.com/geomate/article/view/2600}, abstractNote={<p>Rach Gia city is located on the west coast of Mekong Delta, Vietnam. Due to the high salinity<br>intrusion of underground aquifers, urban surface water is the main source of mining. Water retention consists<br>of reservoirs with around 600,000 m3 and 3.2 km length of a canal. These resources are taken from rivers and<br>canals in the area. However, urban surface water in the area is contaminated by human activities such as<br>wastewater discharge and waterway traffic. Furthermore, in dry seasons when water levels in rivers and<br>canals reach low salinity intrusion infiltrate into rivers, affecting water supplies. Therefore, it is necessary to<br>identify the vulnerabilities of pollution on reservoirs and canals. This study employs a spatial analysis model<br>integrating several previously defined parameters such as slope, land use, drainage network density, runoff<br>and salinity levels. They will be prioritized and weighted and then integrated into a geographic information<br>system (GIS). Results indicated drainage network density and land use are majors to cause vulnerability of<br>pollution on an urban surface water resource. Despite the subjectivity involved in the weighing of analytic<br>hierarchy process (AHP), the study determined vulnerability levels as well as factors that cause pollution.<br>These results will support to protect urban surface water resources.<br><br></p>}, number={63}, journal={GEOMATE Journal}, author={Dinh Tuan Hai and Trinh Thi Phin}, year={2019}, month={May}, pages={340–346} }