The Hill Area Development Programme has been implemented in the Nilgiris District since the year 1975 under financial assistance from Union Planning Commission, Western Ghat Secretariat with a view to supplement the efforts of the State Government in Preservation, protection and enrichment of bio-diversity. The Nilgiris District is endowed with rich bio-diversity due to the existence of wide range of climatic and geological conditions. It receives annual rainfall with a spatial variation ranging from 800 mm to 3000 mm. It is also gifted with thick layer (1 to 1.5 Mts.) of fertile soil. This particular region of Western Ghat is the most suitable habitat for all kinds of flora and fauna.
The Centrally Sponsored Programme, HADP, was initiated in the Nilgiris District during Fifth Five Year Plan. Over the years, the basic objectives, and approach have undergone changes in tune with the emerging needs. At present, the main objectives of the programme are ecological preservation, restoration and overall development of district economy. Specific objectives of the programme are mentioned below.