1. Easy: Moving water with occasional small rapids. Few or
no obstacles.
2. Moderate: Small rapids with regular waves. Some maneuvering
required but easy to navigate.
3. Difficult: Rapids with irregular waves and hazards that need
avoiding. More difficult manicuring required but routes are normally
obvious. Scouting from the shore is occasionally necessary.
4. Very Difficult: Large rapids that require careful manicuring.
Dangerous hazards. Scouting from the shore is often necessary and rescue
is usually difficult. Kayakers should be able to roll. Turbulent water
and large irregular waves may flip rafts. In the event of a mishap there
is significant risk of loss, damage and/ or injury.
5. Extremely Difficult: Long and very violent rapids with severe
hazards. Continuous, powerful, confused water makes route finding difficult
and caution from the shore is essential. Rescue is very difficult or
impossible and in the event of a mishap there is a significant hazard
to life.
6. Nearly Impossible: Difficulties of class 5 carried to the
extreme of navigability. Might possibly (but not probably) be run a
team of experts at the right water level, in the right conditions, with
all possible safety precautions, but still with considerable hazard
to life.
| Name of rivers | Grade | Days |
| Trishuli River Rafting | 2/3 | 1-3 days |
| Kaligandaki River Rafting | 4 | 3 days |
| Bhotekoshi River Rafting | 4/5 | 2 days |
| Sunkoshi River Rafting | +5 | 8 days |
| Seti River Rafting | 2/3 | 2 days |
| Karnali River Rafting | -5 | 12 days |
| Marshyangdi River Rafting | 5 | 5 days |
| Arun River Rafting | 4 | 6 days |
| Budi Gandaki River Rafting | 3 | 3 days |
| Dudh Koshi River Rafting | 3/4 | 6 days |
| Bheri River Rafting | 3/4 | 4 days |
| Tamba Koshi River Rafting | 3/4 | 2 days |
| Tamur River Rafting | 5 | 12 days |