In 2004 two slums were identified as community partners: Anju Kudisai and Pallavan Nagar communities. Anju Kudisai is an inner city slum of about 256 households, located on the banks of the Cooum River (opposite the Central Prison) in Chennai. Pallavan Nagar (consisting of 325 huts) was a fishermen‟s slum on the beach behind the Fishing Harbour in North Chennai. With the assistance of geographers from the Tamil Nadu Directorate of Census Operations, a basic street layout of these two communities was created using Global Position System (GPS) equipment and GIS software. Our research team further developed this GIS data and used them to support the following activities: