Question

For a watershed comprising of (8000) hectares in area, the rainfall
and runoff data are summarized below in the table. The maximum runoff rate was
recorded as 4.82 m3/s at hour 9 on the second day. Compute;
a) 6-hr unit hydrograph,
b) 12-hr unit hydrograph,
c) A runoff hydrograph for the complex rain sequence as: 6-hr rainfall with rainfall
intensity of 2mm/hr, followed by 6-hr rainfall with rainfall intensity of 7mm/hr, and
the last 6-hr rainfall with rainfall intensity of 11 mm/hr, and
d) Determine the maximum runoff rate for the complex rain storm described in part c.

Rainfall Data	Day	Day-1	Day-2
Hour	20	21	22	23	24	1	2	3	4	5
Intensity (mm/hr)	0.5	0.5	0.5	2.7	1.0	5.2	1.7	1.3	1.1	1.3

Runoff Data	Day	Day-1	Day-2
Hour	8	12	16	20	24	4	8	12	16	20	24
Intensity (m3/s)	0.56	0.61	0.61	0.59	0.66	3.35	4.75	4.25	2.40	1.25	1.10

Runoff Data	Day	Day-3	Day-4
Hour	4	8	12	16	20	24	4	8	12	16	20	24
Intensity (m3/s)	0.94	0.89	0.84	0.79	0.74	0.70	0.68	0.65	0.64	0.62	0.59	0.59

reg no= 4000

Answer 1

ref.  https://www.homeworklib.com/question/1617574/take-class-no-180-q-no-3-for-a-watershed