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	Table  08   (Geo., Topography )
	River Basin & Hydrology for Five Major South - West Sector Rivers 1997
	Geo08e
Name	Cathment Area ( Km2 )	Length          ( Km )	Zone	Starting Point	End	District	Annual Rain Fall     (mm)	Mean Annual Discharge         ( Million m3 )
Deduru Oya	2,647	140	Dry + Wet	Matale	Chilaw	Kurunegala, Puttalama	1,750	1,608
Maha Oya	1,528	132	Wet	Kandy / Nuwara Eliya	Negombo	Puttalam, Kurunegala,            Gampaha, Kegalle	2,500	1,608
Kelani Ganga	2,292	147	Wet	Adam's Peak	Colombo	Colombo, Gampaha, Kegalle, Nuwara Eliya	3,600	5,474
Kalu Ganga	2,720	132	Wet	Adam's Peak	Kaluthara	Kaluthara, Rathnapura	3,500	7,862
Gin Ganga	932	111	Wet	Adam's Peak	Ginthota	Matara, Galle	3,500	1,903
Nilwala Ganga	971	101	Wet	Adam's Peak	Matara	Matara, Galle	2,500	1,104
© ２００４， KRI (Kusaka Research Institute)
Source:
Statistical Compendium on Natural Resources Management Sri Lanka 2000,
Ministry of Forestry & Environment
Revised:  2003(y)/12(m)/01(d)
Chief Editor:
Dr. Milton Rajaratne (B.Com., M.Sc., Ph.D.)
The former Head, Department of Management Studies
University of Peradeniya, Sri Lanka.