- Meanders
Meanders are wide and great hoops across the valley.
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- Tributaries
Tributaries is a river that flows into another river rather than ending in a lake or ocean.
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- Estuary
A estuary is the river reaches the sea/ocean.
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- Source/Headwaters
The headwaters or source of a river is where a river begins. The Volga River begins in the Valdai Mountains.
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- Waterfall
Waterfall may be formed with a deep pool below. The force of waters pushes the rocks so over time the watherfall moves further upstream.