Young Blonde Girl With Blue Eyes Reveals Her Navel Piercing And Yellow Scarf At The River Outside In The Nature

• The potamon is the remaining downstream stretch of river. It is characterized by warmer temperatures, lower oxygen levels, slow flow and sandier bottoms.
Whitewater classification
The International Scale of River Difficulty is used to rate the challenges of navigation—particularly those with rapids. Class I is the easiest and Class VI is the hardest.