4.2. Evaluation of pumping unit characterization
4.2.1 . Step-drawdown test
Jacob (1947) has formulated the step-drawdown test and Rorabaugh (1953)
has modified it. These studies have been assumed as a homogenous and
confined aquifer. It is anisotropic with the infinite areal extent and
the pumping well which has fully penetrated the aquifer. The thickness
of the aquifer, static water table aquifers with small drawdown and its
solution has presented by Jacob (1947) and Rorabaugh (1953). The total
process has been accepted by F. J. P. b. J. S. Driscoll, St Paul,
Minnesota (1986). The whole methodology of pumping test and its analysis
procedure has developed by Kresic (2006). After well construction, the
step-drawdown tests have conducted immediately. To identify the well
efficiency and aquifer transmissivity, the coefficients of B and C have
been required to determine. On the basis of graphical method of
Rorabaugh (1953) the step-test data have been evaluated. Actually, it is
the straight-line method of adaptation of Jacob (1947). The total depths
of Well No. 2 and Well No. 4 have 235m and 244m, respectively. Each
well-pumping test has been included in 4 steps. The satellite maps have
made also depend on other geologic and hydrogeological data.