Storm Hydrograph

Question 1

Define baseflow

Answer 1

Groundwater seepage into a stream. When the ground’s water table is higher than a stream bed, the waters seeps into the stream.

Question 2

Define rising limb

Answer 2

As storm water enters the drainage basin the discharge rises, shown by the rising limb.

Question 3

Define receding limb

Answer 3

The receding limb shows the fall in the discharge back to the base level.

Question 4

Define lag time

Answer 4

The time delay between maximum rainfall amount and peak discharge is the lag time.

Question 5

Define discharge

Answer 5

The total volume of water flowing through a channel at any given point and is measured in cubic metres per second (cumecs).