what affects flows in the drainage basin

Question 1

slope angle

Answer 1

very steep slopes encourage surface run off

Question 2

soil porosity

Answer 2

sand has an infiltration rate of 3-12mm/hour

less permeable clays have an infiltration rate of 0-4mm/hour

Question 3

duration of rainfall

Answer 3

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