<Tr> <Th> Website </Th> <Td> www.surveyofindia.gov.in </Td> </Tr> <P> The Survey of India (Hindi: भारतीय सर्वेक्षण विभाग) is India's central engineering agency in charge of mapping and surveying . Set up in 1767 to help consolidate the territories of the British East India Company, it is one of the oldest Engineering Departments of the Government of India . The Survey of India's distinguished history includes the handling of the mammoth Great Trigonometrical Survey under William Lambton and George Everest and the discovery of Mt . Everest . Its members are from Survey of India Service cadre of Civil Services of India and Army Officers from the Corps of Engineers . It is headed by the Surveyor General of India.At present, Survey of India is headed by Lt Gen Girish Kumar, VSM . </P> <P> SI (cartography) as well as ASI (archaeology), BSI (botany), FSI (forests), FiSI (fisheries), GSI (geology), IIEE (ecology), NIO (oceanography), RGCCI (Census of India) and ZSI (zoology) are key national survey organisations of India . </P> <P> The history of the Survey of India dates back to the 18th Century . "First modern scientific survey of India" was undertaken by W. Mather in 1793--96 on instructions of Superintendent of Salem and Baramahal, Col. Alexander Read . The present Dharmapuri district, Krishnagiri district and North Arcot in western Tamil Nadu were then called Baramahal . </P>

What are the different types of surveys conducted in reference of india