Mr. R.V. Rama Mohan of Center for World Solidarity has come up with freeware (an Excel spreadsheet) to calculate the groundwater extraction vs. recharge in an area. He has made the software available to the public and is soliciting feedback.
The September 2007 report of the Expert Group on "Ground Water Management and Ownership" of the Planning Commission is available from the Commission. The report looks primarily at the problem of rural depletion of groundwater and feasibility and necessity of changing groundwater law.
Attached is an interesting document from Prof. Prithvi Kandhal about using porous asphalt in parking lots so that rainwater seeps through it and recharges groundwater.
Dr. Kandhal has published many papers and has significant credentials in his areas of expertise. He resides in Jaipur after 35 years of working in the US.