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W = 2nD Igl <br /> where <br /> W = width of inflow zone (!_) <br /> o = volume pumping rate (V/t) <br /> b aquifer thickness (L) <br /> v Darcy velocity (L/t) <br /> D = distance to stagnation point (L) <br /> ' T hydraulic transmissivity (L/t) <br /> dh static groundwater potentiometric gradient (L/L) <br /> dl <br /> The distance to the stagnation point (D), located directly downgradient of a pumping well, is derived <br /> ' by equating the groundwater velocity under static groundwater conditions to the velocity of <br /> groundwater moving radially toward the pumping well Width of the inflow zone (W), upgradient <br /> ' from the pumping well, as defined above, represents the maximum width of a groundwater capture <br /> band extending upgradjent of the pumping well <br /> 1 <br /> 1 <br /> t2819R034 070 <br /> GROUNDWATER <br /> BE9' TECHNOLOGY, INC <br />