what affects flows in the drainage basin Flashcards Preview

A-Level Geography - Water Cycle > what affects flows in the drainage basin > Flashcards

Flashcards in what affects flows in the drainage basin Deck (3):
1

slope angle

very steep slopes encourage surface run off

2

soil porosity

sand has an infiltration rate of 3-12mm/hour
less permeable clays have an infiltration rate of 0-4mm/hour

3

duration of rainfall

infiltration capacity decreases with time through a period of rainfall until a low value is reached