Question

For a given basin, the following are the infiltration capacity rates at various time intervals after the beginning of the storm.

Make a plot of the f-curve and establish an equation of the form developed by Horton for infiltration curve.

Also determine the total rain and the excess rain (runoff).             

Time (mints)	1	2	3	4	5	6	8	10	12	14	16	18	20	22
Precipitation (cm/hr)	5.5	5.6	5.6	5.8	7.0	9.0	8.5	8.0	7.0	8.0	3.5	3.0	3.0	3.0
Infiltration capacity (cm/hr)	4.4	3.9	3.5	3.2	3.0	2.8	2.5	2.2	2.1	2.0	1.8	1.75	1.7	1.7

Answer 1