THE RIVER VALLEY 0.0 / 5 ? GeographyWater and riversGCSEAQA Created by: laveezahCreated on: 10-12-15 22:07 UPPER COURSE The gradient is steep. V-shaped valley, steep sides, source, narrow channel. Waterfalls and gorges form here. Vertical erosion. 1 of 5 MIDDLE COURSE The gradient is medium. U-shaped valley. Gently sloping valley sides. Meanders and oxbow lakes form here. Lateral erosion. 2 of 5 LOWER COURSE The gradient is gentle. Very wide and flat. Floodplains and levees form here. Very deep channel. Lateral erosion, mouth. 3 of 5 VERTICAL EROSION This deepens the river valley, making it V-shaped. Upper course of the river. 4 of 5 LATERAL EROSION This widens the river valley. Middle and lower courses. 5 of 5
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