Atrapezoidal channel with a sluice gate has the following characteristics: flow rate q = 25 m3/s; channel bottom slope s0 = 0.001 m/m; channel bottom width b = 10 m, the side slopes are 2h to 1v, and manning’s roughness coefficient n = 0.013. the sluice gate exists across the long, straight channel. the gate has an opening of 0.2948 m (assuming this is the depth of flow passing through the gate). the elevation (z) of channel bottom at the gate site is 0.0.sluice gate 10 +4y upstream n sl 10 m 0.2948 m. downstream1) compute (a) critical depth and (b) normal depth (c) determine if the channel bottom slope is steep, mild or critical; 2) determine (a) if the flow upstream of the gate is chocked and (b) the water depth on the upstream side of the gate section (assuming no energy loss through the gate); 3 )construct excel spreadsheet for standard step method: