Hope your help hydraulic CEE 340

It is desired to transport 20 cfs of water through a rectangular finishedconcrete (n = 0.012) canal that can be at most 5 ft wide. The slope of theland through which it passes is 0.0004. The depth of water, in ft, thatshould be expected is nearest: A. 1.83B. 1.28 (Incorrect Answer)C. 1.63  D. 1.01

2- Fill out the following table and find the flow rate of the river and expain what is the reason of preparing this table for a river (20 p). What is the rating curve? (5 point) Station B с DEF 0.6D ||AW || G H 0.8D 0.2D I K L M 0.6D SETT32 i=1 Station Distance Across Stream(ft) Width (ft) Depth (ft) Velocity (ft/s) Area Discharge 0.2D 0.8D 0.6D (ft2) (cfs) A 0 0 0 0 0 B 15 1.1 0.43 0.28 0.35 UD C 28 2.6 0.61 0.46 0.55 39 3.5 1.54 1.39 1.45 ヨ 48 3.2 1.21 1.06 1.12 F 63 3.1 1.13 0.98 1.05 G 80 3.9 1.52 1.37 1.45 H 95 4.2 2.34 2.19 2.25 | 114 3.3 1.42 1.27 1.37 J 135 2.9 1.34 1.19 1.24 K 156 2.1 1.23 1.08 1.12 L 175 1.4 0.53 0.38 0.44 M 190 0 0 0 0