flow can be expressed as

H-h =

(C-3)

T'

transmissibility T, permeability k, and storage S of a

where

homogeneous, isotropic aquifier of infinite extent with

H - h = drawdown at observation peizometer, feet

no recharge can be determined from a *nonequilibrium*

well discharge, gallons per minute

type of pumping test. Average values of S and T in the

W(u) = exponential integral termed a "well func-

vicinity of a well can be obtained by measuring the

tion" (see table C- 1)

drawdown with time in one or more piezometers while

T' = coefficient of transmissibility, gallons per

pumping the well at a known constant rate and analyz-

day per foot width

ing the data according to methods described in (1), (2),

and

and (3) below.

1.87r2S

u=

(C-4)

T't'

(1) *Method 1. *The formula for nonequilibrium

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