Consider groundwater flow between two parallel rivers from our lectures. The distance between the rivers (L) is 2,000 feet and aquifer is 60 feet thick (H=60 ft). The hydraulic conductivity is k=1 ft/day and porosity equals 0.3. Compute head, discharge (Qx) and specific discharge (qx) at x=0, x=L/2 and x=L and, for case 2 only, the point of transition between confined and unconfined flow. Heads at left river (at x=0) and right river (at x=L) are measured relative to the impermeable base and they are (you need to analyze 3 cases): case 1. left head: 80 feet, right head: 60 feet case 2. left head: 60 feet, right head: 40 feet case 3. left head: 75 feet, right head: 45 feet Estimate the time necessary for a contaminant particle to flow between the rivers for all cases.