Question

What is the meaning of River regimes and Hydrographs?

Answer 1

Answer:

Run off variation and the flood hydrograph a storm hydrograph is a way of displaying how the discharge of a river can change over time in response to a rainfall event.

Answer 2

River regimes mean discharge changes due to temperature, precipitation in a year.

Hydrographs is the graph which shows the rate of discharge and period of flow of the river.

What are the types of hydrographs?

• Unit Hydrograph: It shows uniform rainfall in one unit
• Storm Hydrograph:  It is a graph which shows rainfall and river discharge

• Annual Hydrograph: It shows rainfall daily or weekly in a year

What are its components?

• Rising limb: It shows an increase in the rate of rainfall discharge

• Lag Time: It shows the total time between peak rainfall and peak discharge  
• Peak discharge: It shows the maximum rate of rainfall discharge