AS A Level Geography Quiz: Storm Hydrographs

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

It is different from a flood hydrograph

It is built across a river channel to measure storm discharge

It measures peak discharge in metres per second

It calculates lag time

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

Deforestation

Reafforestation

Farming

Urbanisation

3. Which is not true about storm hydrographs?

They show river discharge for the entire rain season

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

They show changes in discharge over time

They are also known as flood hydrographs

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

Drainage density

Slope

Drainage pattern

Vegetation type

5. Which is true about storm hydrographs?

They are all computer-generated animations

They only ever need to be constructed once each season

They are not really useful to humans

They have to be constructed for each rain event

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

Lower peak discharge

Rising limb becomes less steep

Higher peak discharge

Steeper rising limb

Shorter discharge

Longer peak discharge

Longer lag time

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

River stage

Channel size

Rock type

Meanders

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

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

There is no such thing

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

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

It occurs once to discharge during the rain season

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

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

It is the lowest flow the river reaches each season

10. Which statement correctly describes the recession limb?

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

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

It happens twice after each rain event

None of the above

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