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005			20260818132644.0
008			120598 th eng
035			_a.b10317600
099		9	_aAIT Thesis no. WA-79-14
100	1		_aIslam, Nurul
245	1	0	_aGroundwater potential for pump irrigation : _bSawankhalok project - zone II, Sukhothai, Thailand
260			_aBangkok : _bAsian Institute of Technology, _c1980
300			_avii, 65 p.
490	1		_aThesis ; _vno. WA-79-14
500			_aA thesis submitted in partial fulfilment of the requirements for the degree of Master of Engineering, School of Engineering and Technology
502			_aThesis (M.Eng.) - Asian Institute of Technology, 1980
520			_aThe study was intended to appraise the available groundwater resources in relation to the crop requirement of the Sukhothai project area zone II. In doing so, the long term average annual. groundwater recharge to the Yom basin is calculated from water balance computation - in which measured rainfall and estimated evapotranspiration and stream flow data are used. Modified Penman equation as well as class A pan evaporation data are used to predict potential evapotranspiration. Area proportion method is used to estimate local inflow to river and thus river flow at Yom basin outlet at Pho Thale. The amount of natural groundwater recharge is estimated to about 10 cm/ year for the whole basin. For full scale development of the area, induced recharge from the Nan and Yom river is computed by image well theory and is found to be about 40 percent of pumping rate in which the maximum pumpage is 5. 55 m3 / sec per 100 wells. In this computation the 100 multiple well system is replaced by an equivalent single well. Four alternative cropping patterns are tried to compute monthly and annual project supply requirement - out of which one is selected on the basis of maximum productivity and minimum water requirement. For this cropping pattern, the annual project requirement is about 42 cm per year. The results are interpreted in terms of the available water resources - the natural and induced recharge.
650		0	_aWater balance (Hydrology) _xThailand _xSawankhalok Project Zone II
700	0		_aTawatchai T±ngsanchali, _eChairperson
700	1		_aOverbeek, Henk Jen, _eCommittee
700	1		_aGupta, Ashim Das, _eExamination Committee
700	1		_aApichart Anukularmphai, _eExamination Committee
710	2		_aThe Government of The Netherlands, _eScholarship Donor
810	2		_aAsian Institute of Technology. _tThesis ; _vno. WA-79-14
856			_3Full-Text _uhttp://203.159.5.9/ait-thesis/detail.php?q=B22157
907			_a.b10317600 _bmnait _cs
902			_a250526
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