White water rafting grading : -
There are six levels each referred to as “Grade” or “Class” and then a number. The scale is not linear, nor is it fixed. For instance, there can be hard grade two’s, easy grade threes, and so on. The grade of a river may change with the level of flow. Often a river or rapid will be given a numerical grade and then a plus (+) or minus (-) to indicate if it is in the higher or lower end of the difficulty level. Also note that while a river section may be given an overall grading, it may contain sections above that grade, often noted as features, or conversely, it may contain sections of lower graded water as well. Details of portages may be given if these pose specific challenges. ...
Easy : - Gentle trekking for beginners and physically fit. Not too steep gradients. Altitude does not go above 3500m, 4 -5 hours of walking .
Moderate : - Good physical condition, 4 – 6/7 hours of walking. Highest camping will not exceed 4500m. Varied trails – gentle to steep ascents and descents.