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Groundwater vulnerability assessment to pollution : case studies from Bangkok and Kathmandu Valley | |
Author | Nuujoma, Natasha Otilie Kaunapawa |
Call Number | AIT Thesis no.UWEM-15-04 |
Subject(s) | Groundwater--Pollution--Evaluation |
Note | A thesis submitted in partial fulfillment of the requirements for the Degree of Master of Science in Urban Water Engineering and Management jointly offered by the Asian Institute of Technology, Thailand and UNESCO-IHE, The Netherlands |
Publisher | Asian Institute of Technology |
Abstract | Groundwater as a fresh water resource of water supply, agriculture and environmental use and has become increasingly prominent. However, groundwater has been facing gradual serious pollution such as nitrate pollution. The groundwater nitrate pollution problem has been observed in the coastal city of Bangkok as well as inland city in the Kathmandu Valley. This study focuses groundwater vulnerability to nitrate pollution as well as groundwater assessment for shallow aquifers in groundwater basin of Bangkok and Kathmandu Valley. The modified DRASTIC model will be used to compute the relative vulnerability of groundwater nitrate pollution. The model results can be used as an assistance tool for planning groundwater-related activities. The DRASTIC method was applied to assess the specific vulnerability of groundwater to nitrate, based on the possible impact of land use. The assessment involves the description and discussion of all DRASTIC model parameter and their variability, intrinsic vulnerability and specific vulnerability. GIS based GRAM was then used to produce likelihood of release of hazards, likelihood of detection of hazards and residual risk of groundwater contamination in the groundwater both study areas. |
Year | 2015 |
Type | Thesis |
School | School of Engineering and Technology (SET) |
Department | Department of Civil and Infrastucture Engineering (DCIE) |
Academic Program/FoS | Urban Water Engineering and Management (UWEM) |
Degree | Thesis (M. Sc.) - Asian Institute of Technology - UNESCO-IHE, 2015 |