This section drawing shows the flow under a dam (Fitts 2013 Figure 7.30).The upstream reservoir is 4.0 m deep and has a surface elevation of z1 = 28 m. The

downstream tail water is 1.0 m deep and has a surface elevation of z2= 18 m. There is no flow through the dam or the underlying bedrock. Between the dam and the bedrock, the solid lines are streamlines, and the dashed lines are contours of equal hydraulic head. On flow nets, there is equal discharge, Q between each pair of streamlines. Part A Choose a point on the surface of the upstream reservoir. At that point, what are the pressure head, elevation head, kinetic head, and total head? Part B Now choose a point on the bottom of the upstream reservoir. At that point, what are the pressure head, elevation head, kinetic head, and total head? Part C The figure shows four streamlines. From top to bottom, label them 1-2-3-4. Part D If the seepage velocity is v = 1.2 m/d between streamlines 1 and 2, what is the approximate seepage velocity between streamlines 3 and 4? [m/d]