The studies of UNEP (United Nations Environmental Programme) indicated that, over the preceding 20 years, the problem of land degradation had continued to worsen due to human activities and climate change such as prolonged or frequent droughts aggravating land degradation.

This document by national climate centre of IMD computes district wise drought probabilities across India for 319 districts having long data series of rainfall. Has done mapping for moderate & severe drought probabilities for various districts & demarcates regions belonging to different class intervals of probabilities of drought.