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

• The rhithron is the upstream portion of the river that follows the crenon. It is characterized by relatively cool temperatures, high oxygen levels, and fast, turbulent flow.
• The potamon is the remaining downstream stretch of river. It is characterized by warmer temperatures, lower oxygen levels, slow flow and sandier bottoms.