Estimation of Water Availability in Ungauged Catchments

The source of water for an industry could be ground water or river water, depending on its water requirement, water availability at source, and prevalent regulations on industrial water uses. Rivers in India are the main source of water for industries. Water withdrawal from a river could be with or without creating storage facility on-site or off-site. Tropical monsoon hydrology prevails over most parts of India. Therefore, river flow varies from season to season and from year to year. This variability introduces an element of uncertainty in water availability and need for storage of surplus river flow of monsoon season to improve the dependability of water supply in meeting the planned demand.