The suitable period for river running depends on the adequacy of water. May are most appropriate. In Garhwal region, the sacred river Ganga offers the professional as well as the amateur, the exhilaration of white water rafting. Their waters are of grade IV to V, challenging the expert to savour the thrill. Down river from Devprayag, the Ganga changes into a pool drop river.
Sandy beaches line the river at intervals, allowing river rafters to pull up alongside.
The slopes on either side are covered with oak, pine, spruce and fir, with the occasional village and its terraced fields dotting the landscape. Wildlife is visible at a distance, comprising mainly of spotted deer, monkey, leopard, while multi-hued butterflies flit among flowering bushes. Spiritual retreats and ashrams overlook the river and add to the spiritual experience. The Kali and the Gori rivers meet at Jauljibi, where the water volume increases, offering adventure to professionals. For over 117 kms. from Jauljibi to Tanakpur its rapids are grade IV and more.