Water is to be siphoned from a tank at the rate of 0.0892 m^3/s. The flowing end of the siphon pipe must be 4.27 m below the water surface. The lost head terms are 1.5V^2/2g from tank to summit of siphon and V^2/2g from summit to end of siphon. The summit is 1.52 m above the water surface. Find the pressure at the summit in kPa. 3 decimal places

Refer to Figure 7.24. The following data were collected during the field permeability measurement of a confined aquifer using a pumping test. Determine the hydraulic conductivity of the permeable layer. Use Eq. (7.49). Thickness of the aquifer, H = 4.5 m Piezometric level and radial distance of the first observation well: h1 = 2.9 m; r1 = 17.8 m Piezometric level and radial distance of the second observation well: h2 = 1.8 m; r2 = 8.1 m Rate of discharge from pumping, q = 0.5 m3/min

A sand has Gs = 2.66. Calculate the hydraulic gradient that will cause boiling for e = 0.35, 0.45, 0.55, 0.7, and 0.8.