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- Title
Numerical Groundwater Flow and Contaminant Transport Modelling of the Southern Aquifer, Mauritius.
- Authors
Devi Nowbuth, Manta; Rambhojun, P.; Umrikar, Bhavana
- Abstract
Mauritius depends on both surface and groundwater to cater its water demand, where groundwater contributes up to 50% of the total domestic water supply. Groundwater follows a radial movement and is eventually getting discharged into the ocean at the boundary of the island. The aquifers in Mauritius are in hydraulic contact with the sea along all the coastline boundaries. If there is excessive abstraction of groundwater, then the radial flow towards the sea may decrease or even the flow pattern is reversed, thereafter causing seawater movement inland. In addition, the aquifers are characterised by highly permeable lava flows which increases the vulnerability of seawater intrusion. A groundwater flow model was first developed for the Southern Aquifer (Rose Belle, Nouvelle France and Plaisance) and after calibration and verification this model was used to simulate the groundwater flow characteristics within the aquifer. This model has also been used to study the pollution risk from land based pollutants and the movement of seawater inland. The model has predicted the pathways for contaminants from source pollutants.
- Subjects
MAURITIUS; GROUNDWATER flow; ORGANIC water pollutants; DISSOLVED organic matter; AQUIFERS; SUPPLY &; demand
- Publication
Earth Science India, 2012, Vol 5, Issue 3, p79
- ISSN
0974-8350
- Publication type
Article