Storm Hydrographs

Question 1

Peak rainfall

Answer 1

When rain is heaviest

Question 2

Peak discharge

Answer 2

When river flow is greatest

Question 3

Rising limb

Answer 3

As water joins the river discharge increase

Question 4

Falling limb

Answer 4

River discharge eventually decreases

Question 5

Lag time

Answer 5

The time lapse between peak rainfall and peace discharge

Question 6

Storm hydrography affected by ( 7)

Answer 6

Geology 
Climate
Artificial drainage 
Soil type and depth 
Land use
Area/size basin
Relief

Question 7

Hunan causes of flooding (5)

Answer 7

Deforestation 
Soil erosion 
Drainage networks 
Farming 
Building

Question 8

Natural causes of flooding (6)

Answer 8

Antecedent rainfall 
Relief
Frozen/dry ground 
Sunshine= more evaporation +more rain
Geology 
Long periods of heavy rainfall and melting snow