Very useful Would be great, if you can share details on companies and department which conduct such survey Availability of quality water can turn million acres of barren lands into heaven!
This survey was done by Govt. Dept. PCRWR. You can visit your city dept. or private companies also provide surveying facility, and available on internet & FB
This is a scientific servey and this needs open space around 2000 feet to get accurate results and results can vary depending upon area and technical person