exam Q's

Question 1

explain what is meant by hydrograph controls (4marks)

Answer 1

-hydrograph controls are anything that affects the shape of a hydrograph,
-this can be natural or human
-deforestation= decreases interception= shorter lag time= flash flood
-ubranisation= impermeable surfaces= less infiltration= shorter lag time= flooding
-precipitation intensity
-relief
-drainage density