- Pre-impoundment census of flora & fauna, particularly the rare & endangered species, in submergence areas;
- Census of animal population and available grazing areas;
- Land-use pattern in the area with details of extent & type of forest;
- Pre-impoundment survey of fish habitat and nutrients levels;
- Groundwater level, its quality, and-existing water use pattern;
- Mineral resources, including injurious minerals, in the impoundment;
- Living conditions of affected tribals /aboriginals etc.