The major river system namely the Koshi, the Karnali and the Gandaki belong to the antecedent group. Rivers originating from the Mahabharat range and cutting through Churia hills come under the second group, these include Kankai, Bagamati, Kamala etc. the third group of rivers originate from the southern face of the Churia hills. For the purpose of commercial rafting rivers trips are Bhotekoshi, Sunkoshi, Tamur, Kaligandaki, Karnali, Seti khola, Trishuli, Bheri, upper sunkoshi, Marshyngdi, lower arun , dudha koshi, and Seti Karnali.
1. Antecedent to Himalaya
2. After the Mahabharat
3. After the Churia Range
2. After the Mahabharat
3. After the Churia Range
Antecedent rivers belong to the period prior to the rise of the Himalaya, these rivers added their tributaries during or after the Himalayan origin along with the development of monsoon climate. After the formation of Mahabharat hills, the antecedent rivers changed their courses as Mahabharat stood as a barrier. As a result, most of the these rivers were responsible to deposit the sediments in the Churis basin.
Bhotekoshi River is not so away from Kathmandu therefore easily accessed driving through highway. It is at the distance of 3 hours drive through Araniko Highway to Lamosangu. The highway is with numerous bents and natural scenarios. Bhote Koshi is itself very challenging river as the road way view provides while travelling to access point of rafting. The upper Bhote Koshi ends at Barabise and the Lower Bhote Koshi starts at Lamosangu Dam. Rafting put-in –point is at Lamosangu. Rafting adventure in this river is challenging because of big water flow in the river. Expert rafters can handles some rapids which are breathe stopping and hair straightening while rafting.
