Que 1: What is hydrograph ? What are uses of it ?
Ans: It is a graphical representation of rate of flow( discharge ) versus time in a river. channel or conduit carrying flow.
The uses of hydrograph are:
1. Development of flood hydrograph for extreme rainfall magnitudes.
2. Extension of flood flow records based on rainfall records.
3. Developmentof flood forecasting and warming system based on rainfall.