Rafting in the Seti River, starts from nearby Damouli,Trip can be organized from Pokhara or from Kathmandu. You need to sleep o/n in the interval then your rafting will be over in Gaighat which is nearby Chitwan, then you can go Chitwan Natoinal park which is really very attractive national park.Actually Seti River rafting is popular for scenery of beautiful jungles, birds, people, hills, etc....If you want to raft in Nepal for the perfect fun I suggest you to do rafting in this river.