Given that Q = 20 m3/s, calculate the flow depth of the stream after the scour hole.

A pluvia drainage channel, in a city where large sudden rains occur, has the shape shown in the figure. It is made of unfinished concrete and has a 0.5 percent slope. The sectionhigher allows large volumes to be transported through the channel. Determine the normal discharge for depths of 0.5 m and 2.5 m

2-A water well is fully penetrates a confined aquifer, as shown in the figure, the external radius of the gravel pack around the water well is 35cm. The length of well screen is 25m and the well discharge is 0.15m3/s. Assess the validity of Darcy's law for this flow. Jse p=1000 kg/m³, µ =1.14×10-3 pa.s, d=1mm)

Please write legibly, complete solutions, avoid rounding off intermediate values, thanks.