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There are three sections in a river they are called: The upper Course, The Middle Course and The Lower Course.

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Introduction

A river transports material through: Deposition occurs when the river starts losing energy. Heavy particles are deposited first. The light material is transported. Eventually most of the lighter material is then deposited, although sometimes not until the river reaches the mouth. The three sections of a river There are three sections in a river they are called: The upper Course, The Middle Course and The Lower Course. The upper Course, is the steepest part of land in the river. It is usually small, but flows very fast. The energy levels are high and the river cuts away at its bed. As it does it quickly deepens its valley through down cutting. This creates a steep sided V- shaped valley. ...read more.

Middle

Deposition is now dominant process. Landforms located on The upper Course Waterfalls and Gorges are located on The Upper Course. A waterfall can occur when the water tumbles over a ledge of hard rock. The softer rock is eroded more easily. This leaves the harder rock over hanging. Eventually after the under cutting has occurred, the harder rock collapses into the river. The water fall retreats to a position further upstream. A waterfall is a sign meaning that there are layers of different rocks under the river. If the same process happens several times, then a steep sided Gorge is left, downstream of the waterfall. This can be seen at the diagram of high force waterfall on the river tees. The famous waterfall Niagara Falls Niagara Falls is on the border between the United States and Canada. ...read more.

Conclusion

This is created by the erosive action of a powerful river. The famous Grand Canyon The Grand Canyon stretches across the state's Colorado Plateau and averages 16 km (10 mi) in width. Beautiful rock formations of layered limestone, sandstone, shale, and other rock rise from the canyon floor. This formation is known as "The Alligator". Grand Canyon is exceptionally deep, steep-walled canyon in north-western Arizona, United States. It was formed by the eroding action of the Colorado River. The entire canyon is extremely beautiful, containing towering buttes, mesas, and valleys within its main gorge. Grand Canyon, United States The Grand Canyon is relatively young in geological terms; the river began its work of erosion about 10 million years ago. Coupled with the downward cutting of the river has been a general rising or up warping of the Colorado Plateau, which has added its effect to the action of the river. ...read more.

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