Causes of the Tewkesbury floods 0.0 / 5 ? GeographyRivers and FloodingGCSEAQA Created by: selfiegirlxoxoCreated on: 06-11-16 09:11 Heavy precipitation Heavy precipitation: - Climatic factor - Lasted for 14 hours before the flooding - The amount of rainfall was 150-210mm approx. -Rainfall flowed into the river, caused the river to rise rapidly - The water overflowed the banks, caused a flood to occur. 1 of 5 Large Drainage Basin Large Drainage Basin - Human and physical factor - Has an area of 11,419km - The drainage basin can store lots of water and it may have stored too much water - This may have caused it to overflow and result with a flood. 2 of 5 Steep Slopes Steep slopes: - Human and physical factor - The steeper the slope, the higher the velocity of the water flowing - This means there'd be less control over the water flowing - This results into a flood. 3 of 5 Lots of Tributaries Lots of tributaries: - Human and physical factor - The River Severn has 21 tributaries - This makes 21 confluences - The River Severn carries 3000 ml of water per year - Lots of water is going into the river, causing it to overflow - This results into a flood. 4 of 5 Urbanisation Urbanisation: - Human factor - Concrete and tarmac are impermeable surfaces - They make surface run-off too fast - When rainwater precipitates from the sky, water runs off the surface too fast - This means that there's less control over the water, triggering a flood. - This happens a lot when the ground is saturated. 5 of 5
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