A definitive physical features map of the country from the Survey of India, showing elevation in metres of different regions and major rivers and land formations.
The National Institute of Hydrology has mapped the various land use regions of the country to indicate the percentage of land under forests, non-agricultural, plantation and grass lands
The guide gives a detailed overview about the design aspects, different types of systems, costing, performance, water quality and regulatory issues of rainwater tanks
The Central Groundwater Board have come out with watershed and basin-wise maps for the entire country. Here's an introduction and the link to the resource
Using a rain barrel is the easiest way to begin rainwater harvesting. Rain barrel serves as a storage unit for rooftop rainwater. It can collect a substantial amount of rainwater.
This is a technical manual for rainwater harvesting from the Rainwater Club, giving detailed information including required parts and approximate costs.
The survey of school sanitation in seven blocks of Mysore district, was done by a group of NGOs comprising of Swami Vivekananda Youth Movement, MYRADA and Vikasana in 2005
The chapter on water resources in the report deals with the environmental problems linked to water resources pertaining to availability, distribution, management, utilization and sustenance