Standard precipitation index Index value 2 and more Very severe wet years 1.5 to 1.99 Severe wet years 1 to 1.49 Middle wet years -0.99 to 0.99 Normal -1 to -1.49 Middle drought -1.5 to -1.99 Severe drought -2 and less Very strong drought

Table 1: Different intensities of drought based on Standard recipitation Index.