A 4 h hydrograph for a project site in Mahanadi Basin is given below. Calculate 2-h UH by S-hydrograph approach.
Time (h) 0 2 4 6 8 10 12 14 16 18 20 22 24 2
UH ordinates 0 30 110 170 210 180 120 80 40 35 20 15 5 0
(m3/sec)