| Author | Ranjan, Sarukkalige Priyantha |
| Call Number | AIT Thesis no.WM-01-16 |
| Subject(s) | Groundwater--Sri Lanka
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of
Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | Groundwater exploration, development and conservation are of significant
importance to developing countries, which often face shortages of surface water resources
to meet their demand. Taking this into account, an assessment of groundwater resources in
Walawe River basin, Sri Lanka has been conducted based on the available groundwater
quality and quantity data. This study focuses on providing an approach to initiate the
institutional framework for the future studies proposed in Walawe Basin by committing
resources to develop and maintain long-term research activities in the basin.
Groundwater data and references were collected from a large number of sources
and the collected data were combined to produce a single groundwater data inventory for
the Walawe basin. The geostatistical analysis of groundwater quality was carried out in the
study area and it shows that the water quality is not so spatially varied. The critical zone
maps for Fluoride, Iron and Total Hardness show that these chemical parameters are found
in some places beyond their permissible limits for domestic use. Three well-known
methods for measuring groundwater vulnerability were applied to determine the
groundwater vulnerability of the area with respect to groundwater quality and quantity;
DRASTIC, CAER and susceptibility for groundwater level decline. A mapping evaluation
of all methods using GIS environment, concluded that all methods appear applicable for
the study area. Finally, a monitoring network design is provided based an nine alternative
networks. Minimization of cost of construction and reduction of mean kriging standard
deviation were considered as major criteria for selection of the best network system among
the alternative networks by using multi-criteria decision making. |
| Year | 2002 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Water Engineering and Management (WM) |
| Chairperson(s) | Gupta, Ashim Das |
| Examination Committee(s) | Droogers, Peter ;Babel, Mukand Singh ;Trankler, Josef |
| Scholarship Donor(s) | The German Academic Exchange Service (DAAD) |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2002 |