In the first encounter with the rapid, one of the rafters went under the rapid but rescued in no time. There is a number of adventure activities in Rishikesh for every thrill seeker. Check them out in the video. River Water Grade Grade 1: Easy, small waves. No obstacles. Grade 2: Moderate difficulty with clear passages. Grade 3: Difficult, high irregular waves, narrow passages require precise maneuvering. Grade 4: Difficult, powerful waves. Very precise maneuvering required. Grade 5: Extremely difficult, violent, highly congested. Water Grade 2/3 in Brahmpuri, Shivpuri Water Grade 2/3 Plus, Marine Drive 3/4 Plus and Kaudiyala 4 Plus.