AS A Level Geography Quiz: Storm Hydrographs

1. What is a storm hydrograph? Select all the correct answers

It measures peak discharge in metres per second

It is built across a river channel to measure storm discharge

It calculates lag time

It is different from a flood hydrograph

2. How does urbanisation affect the shape of a hydrograph? Choose all the right answers.

Steeper rising limb

Longer peak discharge

Rising limb becomes less steep

Shorter discharge

Higher peak discharge

Lower peak discharge

Longer lag time

3. What is peak flow as shown on a storm hydrograph?

It is the lowest flow the river reaches each season

It is the lowest flow after or before a rain event

It’s the highest discharge a river reaches each season

It is the highest flow after a precipitation event in the river channel

4. Which of the following does not affect the shape of a storm hydrograph?

Vegetation type

Drainage density

Slope

Drainage pattern

5. Which is true about storm hydrographs?

They are all computer-generated animations

They only ever need to be constructed once each season

They have to be constructed for each rain event

They are not really useful to humans

6. Which statement correctly describes the recession limb?

None of the above

It is when the river recedes upstream after a rain/precipitation event

It happens twice after each rain event

It is when the river’s discharge falls after reaching a peak discharge

7. Which is not true about storm hydrographs?

They show river discharge for the entire rain season

They are also known as flood hydrographs

They show lag time after an event before peak discharge is reached

They show changes in discharge over time

8. Which statement correctly describes what a rising limp is?

It is the tributary with the highest discharge in the drainage basin

It’s the highest discharge reached by a river after a rain/precipitation event in the basin

There is no such thing

It occurs once to discharge during the rain season

It shows increasing river discharge after a rain/precipitation event in the basin

9. Which land uses affects the shape of a storm hydrograph? Select all the right answers.

Farming

Reafforestation

Deforestation

Urbanisation

10. Which of the following affects the shape of a storm hydrograph?

Channel size

River stage

Meanders

Rock type

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AS A Level Geography Quiz: Storm Hydrographs- Updated 2025

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