Ranawaka, C. P.; Hemakumara, G.P.T.S.
(University of Ruhuna, Matara, Sri Lanka, 2015-03-04)
The dry zone covers much of low lands of Sri Lanka and receives an annual rainfall
lesser than 1750 mm. This rainfall feeds about 233 major and minor ancient reservoirs
and more than 10,000 small ancient village tanks ...