000			03738nas|a2200421 i 4500
005			20260817163554.0
008			020823s2002 th uzm rtt 00| a1eng d
035			_a.b11864345
099		9	_aAIT Thesis no. WM-01-16
100	1		_aRanjan, Sarukkalige Priyantha
245	1	0	_aAssessment of groundwater resources in Walawe basin, Sri Lanka
260			_aBangkok : _bAsian Institute of Technology, _c2002
300			_a85, [38] leaves
490	1		_aThesis ; _vno. WM-01-16
500			_aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering
502			_aThesis (M.Eng.) - Asian Institute of Technology, 2002
520			_aGroundwater 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.
650	1	0	_aGroundwater _xSri Lanka
700	1		_aGupta, Ashim Das, _eChairperson
700	1		_aDroogers, Peter, _eExamination committee
700	1		_aBabel, Mukand Singh, _eExamination Committee
700	1		_aTrankler, Josef, _eExamination Committee
710	2		_aThe German Academic Exchange Service (DAAD), _eScholarship donor
810	2		_aAsian Institute of Technology. _tThesis ; _vno. WM-01-16
856			_3Full-Text _uhttp://203.159.5.9/ait-thesis/detail.php?q=B07781
907			_a.b11864345 _bmnait _cu
902			_a240402
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