What types of surveys were conducted by colonial administration in India

What types of surveys were conducted by colonial administration in India? 

By the early nineteenth century detailed surveys were being carried out to map the entire country. 

1. In the villages, revenue surveys were conducted. The effort was to know the topography, the soil quality, the flora, the fauna, the local histories, and the cropping pattern. 

2. The objective was to record all the facts seen as necessary to know about to administer the region. 

3. By the end of the nineteenth century, Census operations were held every ten years. These prepared detailed records of the number of people in all the provinces of India, noting information on

castes,religions and occupation. 

4. There were many other surveys – botanical surveys, zoological surveys, archaeological surveys, anthropological surveys, forest surveys.