Water flows along the drainage canal having the properties shown in Fig. E10.7a. If the bottom slope is So= 1 ft/500 ft=0.002, estimate the flowrate when the depth is y = 0.8 ft+ 0.6 ft = 1.4 ft. 3 ft 2 ft 3 ft n₁ = 0.020 n3 = 0.030 ☑ 1 0.6 ft n2 = 0.015 (3) 0.8 ft (2)