The Southern part of Banswara district of Rajasthan state is mostly dominated by tribal populations. The socio-economic conditions of the tribals are pathetic by all standards. Even though the average rainfall is very good, the region is always under influence of drought. This mainly due to the lack of management, inadequate knowledge and inadvertence of water conservation pratices. Hence, it is necessary to plan the watershed development activities to conserve the available resources and further enhance the land productivity. Therefore, in the present study, the effort has been made to estimate the maximum one day rainfall for different return periods, which can be used for design of various conservation structures in the area.