At the Rocky Mountain Arsenal near Denver, Colorado, many impermeable rock outcropping exist. Groundwater elevations in the vicinity of one of these confined areas is shown in the water table map in Figure P7.1.9. Given a typical cross section, determine the flow rate through the confined opening. Assume a hydraulic conductivity of 0. 00058 ft/sec.

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Rock outcrop ...Water table -elevation (5,200) Rock outcrop 40 (Scale n 2,000f / (Not to Scale 5,230 500 Plan view Typical section view Figure P7.1.9