A gravel-packed well with an effective diameter of 36 in. (914 mm) pumps water from an artesian aquifer having T = 4.2 × 10 4 gpd∕ft XXXXXXXXXXm 3 ∕d∕m) and S = 4.4 × 10 −5 . The well lies at a...

A gravel-packed well with an effective diameter of 36 in. (914 mm) pumps water from an artesian aquifer having T = 4.2 × 10⁴
gpd∕ft (521.56 m³∕d∕m) and S = 4.4 × 10⁻⁵. The well lies at a distance of 2,000 ft (610 m) from a stream that can supply water fast enough to maintain a constant head. Find the drawdown in the well after 20 days of pumping at 550 gpm (2725 m3/d).