Randhir Kumar
Ex-M.Tech student, Department of Water Engineering and Management, Central University of Jharkhand, Ranchi, Jharkhand, India,
E-mail: cerandhir@gmail.com
Birendra Bharti
Assistant Professor, Department of Water Engineering and Management, Central University of Jharkhand, Ranchi, Jharkhand, India.
Received on: February 26, 2022
Accepted on: March 23, 2022,
Published on: April 30, 2022
ABSTRACT
Increasing demand of fresh water is not only an issue in India but across the world. Rapid growth ofpopulation is a major cause of harassing the natural resources and groundwater is one of them. Themethodology for groundwater resources assessment in India is mainly based on Ground Water ResourcesEstimation Committee,1997 and it involves assessment of annual groundwater resources recharge, annualgroundwater draft (utilization) and the percentage of utilization with respect to recharge (stage ofdevelopment). The assessment units (blocks/watersheds) are categorized based on stage of groundwaterdevelopment (utilization) and the long term water level trend. This study estimates the recharge and draftof Groundwater in Arwal District due to uses for irrigation, domestic and industrial uses, etc. Thecharacteristic of annual rainfall, monsoon rainfall and non-monsoon rainfall were analyzed. The averageannual rainfall of Arwal district is 743.05 mm, monsoon rainfall as 654.18 mm and non-monsoon rainfallwas recorded as 66.87 mm. Groundwater recharge was estimated at 49766.15 ha-m and draft wasdetermined as 52973.15 ha-m. Population study of district was forecasted using Geographical Increasedmethod. Based on this study results, the total annual demand of water for Domestic purposes wasestimated at 41.09 MCM. Draft of groundwater was observed more than recharge of groundwater. Thisneeds proper planning and management of existing groundwater resources.
Keywords: Rainfall infiltration factor method; GEC-1997; Recharge; Draft of groundwater; Rainfall;Population forecasting.