Hyrographs Flashcards
1
Q
Hydrograph
A
A graph showing how a river responds to a period of rainfall.
2
Q
Peak rainfall
A
The maximum amount of rainfall
3
Q
Lag time
A
The difference between the peak rainfall and peak discharge.
4
Q
Rising Limb
A
Shows the increasing discharge
5
Q
Peak discharge
A
The maximum volume of water passing a given point in a given period of time.
6
Q
Falling Limb
A
Shows the decreasing discharge
7
Q
Base flow
A
The normal discharge of the river.
8
Q
Flashy Response
A
When the lag time is short
9
Q
Slow Response
A
When the lag time is longer.
10
Q
Factors that influence the lag time
A
Infrastructure Vegetation Permeable ground Soil type Size of drainage basin Gradient Human Influence
