Hydrograph is a graphical representation between the discharge or flow with time. It is plotted with flow as ordinates (Y-axis) and time intervals as abscissas ( X-axis). The ordinates may be plotted in terms of the gauge HEIGHT, the number of cubic meters PER second per square kilometer, the power in kW that can be developed. The abscissas may be taken in terms of hours, DAYS, weeks or months. It also indicates the power available from the stream at different times of the day or year (particular period). Hydrograph is SIMILAR to load curve and used to STUDY the electric power.

A Hydrograph provides the following information:

• The discharge at any time during the period under consideration.
• The maximum and minimum runoff during the period.
• The average run-off during the period.
• Total volume of the discharge up to any time, given by the area under the curve up to that time.

Hydrograph is a graphical representation between the discharge or flow with time. It is plotted with flow as ordinates (Y-axis) and time intervals as abscissas ( X-axis). The ordinates may be plotted in terms of the gauge height, the number of cubic meters per second per square kilometer, the power in kW that can be developed. The abscissas may be taken in terms of hours, days, weeks or months. It also indicates the power available from the stream at different times of the day or year (particular period). Hydrograph is similar to load curve and used to study the electric power.

A Hydrograph provides the following information: