ABSTRACT
Rudrasagar Lake is one of the prominent tourist destinations in north eastern part of India which surrounds Neermahal Palace. It is also declared as Ramsar site (i.e. a wetland of international importance). The surrounding Lake area was initially developed based on the fishing activity in the lake, although later on people started agricultural activity too. People in the surrounded village area of the Lake mainly use groundwater for fulfilling their water demand, in spite of the presence of the Lake. Even for irrigation purpose groundwater is used. Moreover, treated water is not available to all the households in the nearby village area. Whereas the excess water of the lake is discharged into the river, through connecting Kachigang channel, without proper utilization. In this study a quantitative assessment of water of Rudrasagar lake has been done for possible use of drinking and Irrigation etc. For the evaluation of quantity of water, the hydrologic simulation model has been used using HEC-HMS software. From the observation of model discharge of the Lake water, for various season viz. Pre Monsoon, Monsoon and Post monsoon during the period 2006-2015, it has been found that minimum discharge is 0.41m3/s during pre monsoon and maximum discharge is 6.77m3/s during monsoon. So, using the available water, during pre monsoon 50 liters per person per day of water can be supplied to every household and during monsoon the quantity is above 135 liters. Beside this for irrigation purpose also the excess water may be supplied to the local farmer.
