Flood Hydrograph

Discharge (m3/sec) = cross-sectional area (m2) x _________

• velocity

• rainfall

• runoff

• evaporation

Discharge shows us a measurement of _______ in any given moment.

• Throughflow

• Percolation

• Runoff

• Groundwater flow

On a hydrograph, what is shown as a bar chart?

• discharge

• rainfall

• lag time

• baseflow

On a hydrograph, what is represented by a line graph?

• discharge

• baseflow

• rainfall

• time

What is the name from the time between peak rainfall and peak discharge?

Which of the following affect the shape of a hydrograph?

• drainage basin size

• rock type

• soil water

• rainfall intensity

True or false- A small drainage basin will have a flashy hydrograph

• true

• false

True or false- Forest cover reduces interception leading to a low, flat hydrograph.

• true

• false

True or false- Light rainfall will transfer to a river slowly

• True

• false

When discharge is rising towards the peak, what is this called? (Hint - two words)