AS A Level Geography Quiz: Storm Hydrographs

1. Which is true about storm hydrographs?

They have to be constructed for each rain event

They only ever need to be constructed once each season

They are all computer-generated animations

They are not really useful to humans

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

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

It is the lowest flow after or before a rain event

3. Which statement correctly describes the recession limb?

None of the above

It happens twice after each rain event

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

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

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

It calculates lag time

It measures peak discharge in metres per second

It is built across a river channel to measure storm discharge

It is different from a flood hydrograph

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

Drainage pattern

Drainage density

Slope

Vegetation type

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

Deforestation

Farming

Reafforestation

Urbanisation

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

Rock type

Channel size

Meanders

River stage

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

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

There is no such thing

It occurs once to discharge during the rain season

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

Longer peak discharge

Longer lag time

Rising limb becomes less steep

Steeper rising limb

Higher peak discharge

Shorter discharge

Lower peak discharge

10. Which is not true about storm hydrographs?

They are also known as flood 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

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