Study of drought in northern Karun watershed

Drought is a natural hazard that has significant impact on economic, agricultural, environmental,and social aspects. In the present study details analysis of rainfall data has been carried out for the years 1981-2011. Standard precipitation index (SPI) has been used to evaluate the precipitation deficit in the Karun watershed of Iran. The results indicated that 1981-82,82-83,83-84,84-85,88- 89,89-90,90-91,93-94,96-97,98-99,99-2000,2000-2001,2002-2003,2007-2008,2008-2009, 2009-2010 and 2010-2011 the SPI values is negative. It is very anguish. And also this found threat drought the water resource and agriculture

کلیدواژه ها:

Drought ، Standard precipitation index (SPI) ، Karun watershed