Recent changes of rainfall Regime of <em>Hakwatuna Oya</em> watershed of Sri Lanka

Abstract

This study was conducted to verify farmers' claim, which was also verified by a field survey, that the availability of water in the Hakwatuna were used in this study. The linear regression analysis was used to study the annual trend of rainfall during the study period from . The variability of rainfall during recent decades (1991)(1992)(1993)(1994)(1995)(1996)(1997)(1998)(1999)(2000)(2001)(2002)(2003)(2004)(2005)(2006)(2007)(2008)(2009)(2010) and the most recent 20-year period (1991-2010)