Resources

Survey of India
http://www.surveyofindia.gov.in/

State Maps at http://www.surveyofindia.gov.in/pages/display/117-state-maps
District Planning Maps at http://www.surveyofindia.gov.in/pages/display/124-district-planning-map-series

Satellite Data
Bhuvan ISRO Geoportal National Remote Sensing Centre
http://bhuvan.nrsc.gov.in/bhuvan_links.php

Open Data Archive for LISSIII
Elevation CARTOSAT

Earth Explorer United States geological Survey
All Landsat data for India available at http://earthexplorer.usgs.gov/

Elevation Data
SRTM 90 m for India at the CGIAR consortium for spatial information at http://srtm.csi.cgiar.org/

Administrative Data and Other Data for India at DIVA-GIS at http://www.diva-gis.org/gdata
Data available here includes inland water, roads, railroads, elevation, landcover, population