In the present study, combining drawdown data for a single well with electrical-conductivity measurements provided an efficient method for determining the position of a mixing zone near pumped wells.
In the study area, the drawdown transmissivity varied from 33.12 to 167.43 msq/d.
In this study, the low drawdown, high recovery transmissivity, and high specific capacity represent locations that are considered to delineate the potential groundwater zones for development.
In this study, critical total drawdown (CTD) as an index of sand production onset is aimed to be estimated through 4 proposed methods.
Shafike et al. (1992) used quadratic programming to study pumping costs with drawdown, when drawdown magnitude exceeds a small fraction of the saturated thickness.
In this paper, the results of a parametric study on groundwater drawdown-induced surface settlement during tunneling in water-bearing ground are presented.
The study indicates that the drawdown and recovery transmissivity in the study area varied from 33.12 to 168.77 m2/dand and from 31.20 to 171.88 m2/day, respectively.
It cited a Texas study that found "excessive drawdown" of local groundwater in a small proportion — about 6% — of the Eagle Ford Shale formation underlying much of south Texas was related to water used for fracking.
We had initially sought to enroll 226 subjects; however, the study took place during a drawdown of combat forces in Afghanistan which decreased enrollment.
The aquifer in this study has some wells without measurable drawdown during pumping due to high permeability.
