5.2.4. Well efficiency characterization
The average efficiencies have been found in the Well No. 4 is 95.26%
and in the Well No. 2 it is 93.25%. The higher efficiency of the well
reduces the costs of pumping. According to Kresic (2006), the values of
> 70% have been accepted for the good production of water.
This rate of efficiency indicates the proper designed and developed
wells. The development factor of Well No. 4 is 0.0005 and Well No. 4 is
0.00725. On the basis of Bierschenk’s classification (Bierschenk, 1963),
the factor values of these wells are <0.1 which indicated that
the studied wells are “very effective”.