Flow rate in a rectangular channel is 50ftcube /s and the width of the channel is 5 ft calculate critical depth

Q) The following data are obtained from the current meter gauging of a stream, at a gauging station. Compute the stream discharge using 1- Mid section method 2- Mean section method. Rating equation of current meter: v = 0.72 N+ 0.144, where N = rev./sec, v=velocity (Km/hr). Distance from Water depth Immersion of current meter below water surface the left bank of river (m) (m) depth (m) revolution sec 10 36 20 40 3. 0.6 0.44 1.76 0.8 3.2 1.6 6.4 0.84 3.36 0.5 2.0 0.72 40 48 50 57 53 59 57 51 49 52 53 2.2 9. 30 12 8 46 33 33 29 34 29 16 15 4.2 18 2.5 21 24 1.2 48

Water at 60° F flows by gravity from a large reservoir at a high elevation to a smaller one at a lower elevation through a 60-ft-long, 2-in-diameter cast iron piping system that includes four 90° flanged elbows, a well-rounded entrance, a sharp-edged exit, and a fully open gate valve. Taking the free surface of the lower reservoir as the reference level, determine the required elevation zi of the higher reservoir if the flow rate is 13 ft/min. Use a= 1.04. l a

Q (5-1)/ Water flows uniformly in an earth rectangular cross section open) UNIWEKA channel. Data available are: Bed width of the channel B= 200 (m), longitudinal slope of bed level of VID the channel S, 0.0002, n=0.025 {s/m(1/3)} and water flow rate Q=800 (m³/s). mino I valo (dmom uw to Calculate values of the followings: Water flow depth y in the channel. Water flow velocity v in the channel. ANSWER/y = 22 (m) and v= 3.96 (m/s). MOITUJOR vel) oni 101 (S-2).oaldeT mort (m) 2.1 S