![]() Theis CV (1935) The relation between the lowering of the piezometric surface and the rate and duration of discharge of a well using ground-water storage. Sindalovskiy LN (2014) Analytical modeling of aquifer tests and well systems (ANSDIMAT software guide). Sindalovskiy LN (2006) Handbook of analytical solutions for aquifer test analysis. The reader is referred to Strack (1989) for further details on superposition in unconfined aquifers. Pumping tests have been conducted at many we1 1 s using either a single-we1 1 configuration, where aquifer drawdown and recovery is measured in the pumped well, or a multiple- well configuration, where aquifer response is measured at one or more obser- vat ion we1 1 s. However, for unconfined aquifers in which drawdown is a sufficiently small fraction of aquifer thickness, the technique of superposition can be a useful approximation. Shtengelov RS (ed) (1994) Computer hydrodynamic calculations. hydraulic properties of the unconfined aquifer at Hanford. Poeter EP, Hill MC, Banta ER, Mehl S, Christensen S (2005) UCODE_2005 and six other computer codes for universal sensitivity analysis, calibration, and uncertainty evaluation. Jacob CE (1946) Effective radius of drawdown test to determine artesian well. Subsequently, drawdown data were assessed using a finite. Geological Survey Water-Supply, paper 1536-E The usual interpretation methods gave questionable values for hydraulic conductivity and storativity. Deep well seals in confined aquifer wells. EOS T Am Geophys Un 27(4):526–534įerris JG, Knowles DB, Brown RN, Stallman RW (1962) Theory of aquifer test. So is 12 hours long enough Semi-logarithmic Graph of Drawdown vs Time. Soil type, porosity, hydraulic conductivity and. So its study during pumping action is more complex. ![]() Cooper HH, Jacob CE (1946) A generalized graphical method for evaluating formation constants and summarizing well-field history. In unconfined aquifer water flows in both horizontal and vertical direction when pumping.
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