You need to separate the direct runoff from the total runoff by using logarithmic technique. With the help of area and total duration, direct runoff in terms of depth units is needed to be sorted out. Ordinates of direct hydrograph are to be calculated with the help of definition of unit hydrograph.
Prepare an Assignment on Hydrology, you need to include below steps in your solution
1) Separation of direct runoff from total runoff
2) Calculation of total runoff in terms of depth units
3) find out unit hydrograph
4) Calculation of net rainfall
5) Plot of net rainfall
6) Calculation of φ index
7) calculation of effective rainfall due to different storms
8) determination of direct runoff due to different storms
9) plot the surface runoff and time
10) locate the peak runoff
Report Formation :
1. Introduction
2 Separation of base flow from total run off hydrograph
- surface runoff
- Sub-surface run off
- prompt run off
- Delayed run off
- Ground water runoff
- Separation of base flow from total run off
- Location of the point where curvature of Log Q plot changes
- Separation of base flow from total run off
- Determination of base flow ordinates
3 Determination of direct run off
4 Determination of direct run off in depth units (cm)
5 Determination of unit hydrograph
6 Separation of net rainfall from the gross rainfall data
7 Determination of φ index
8 Determination of direct runoff for the different storms
9 Results