Given below are the ordinates of 4 h unit hydrograph of a basin in m'/s at one hour intervals. What is the area of the basin? 4, 25, 44, 60, 70, 61, 52, 45, 38, 32, 27, 22, 18, 14, 11, 8, 6, 4,2.1

Q: Find the distance x in fig below, use the common intensity method as (i= 1200/1+90) x 150 m Sewer 1 Sewer 2 Sewer 3 50 m B Percent Slope Area A 0.44 0.5 B 0.35 2 Sewer D (mm) 1 290 2 410 3 600 0.8 Distance (m) 140 80 d/D 0.3 0.6 V full m/s 1.8 2 1.6

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Route the following upstream inflow hydrograph through a downstream flood control channel using the Muskingum method. The channel reach has a proportionality coefficient of 1.25 hr and a weighting factor of 0.3 Stop routing after completing the 20-hour time step. Time (hr) 1 2 3 4 5 6 6 7 8 9 10 Inflow (cfs) 90 140 208 320 440 550 640 680 690 630 Time (hr) 11 12 13 14 15 16 17 18 19 20 Inflow (cfs) 570 470 390 360 330 250 180 130 100 90

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