Abstract: A study on the status and biotic pressure of corridors located in and around Mudumalai Wildlife Sanctuary and Sigur reserve Forest of Tamilnadu, southern India was studied between December 1999 and March 2000. The primary objectives of the study were to assess the quality of those corridors in terms of vegetation structure and intensity of use by endangered animals with special reference to elephants and to quantify the dependence of the villagers on these corridors for fuel wood and cattle grazing. Total of 42 plant species were recorded in an area of 6.8 ha. Among them 57% of tree species was food item of elephants Anogeisssus altifolia, Erythroxylum monogynum, Zizyphus mauritiana and Z. xylopyrus was common species in all corridors. The ground cover was barren in most of the corridors. Signs of lopping and woodcutting were found in the 27 tree species recorded from all corridors. Among them 15 species were foods plants of elephants. The impact of human activity with reference to the extent of dependence on the corridors by villagers particularly intensity of lopping of trees was 35.3D/ha. Wood cutting, cattle grazing were observed to be a major threat in the five corridors. Elephants intensively upside Masinagudi-singara corridor. The greater attraction of elephants to this corridor is availability of bamboo and perennial water sources, followed my Masinagudi-Moyar corridor, which was moderately used by elephants.