Hydrographs Flashcards
0
Q
Discharge
A
The volume of water flowing through the cross-section of a river within a given time period.
(Cross sectional area x velocity)
1
Q
Storm hydrograph
A
Shows the variations in a rivers discharge over a short period of time usually during a rainstorm.
2
Q
Base flow
A
Normal discharge conditions for the river
3
Q
Rising limb
A
Initial conditions, how quickly discharge goes from normal to peak
4
Q
Peak rainfall
A
The maximum amount of rainfall
5
Q
Peak flow
A
The maximum amount of discharge
6
Q
Lag time
A
Difference between rainfall and peak flow.
7
Q
Recession limb
A
How quickly discharge returns from peak to normal level
8
Q
Storm flow
A
Overland flow + through flow = storm discharge. The maximum amount of discharge in an area.
