![]() Commercial software packages such as AquiferTest developed by the Waterloo Hydrogeologic, Inc., Canada ( ), AQTESOLV ( ) and Aquifer win32 ( ), among some others, are available which enable us to analyze different types of pumping-test data easily and efficiently in considerably less time. ![]() ![]() However, with a rapid advancement in the computer technology and numerical techniques, it is possible to perform such analyses using a PC (laptop or desktop). In the past, the analyses of pumping-test (aquifer-test) data for determining aquifer parameters or for determining hydraulic characteristics of production wells were done manually only, which is cumbersome and somewhat subjective. (2008) for further details about the methods described in this lesson, together with the discussion on other methods of pumping-test data analysis. Interested readers may refer to Kruseman and de Ridder (1994), Fetter (1994), Batu (1998), Kasenow (2001), Schwartz and Zhang (2003), and Michael et al. The detailed discussion on each of the methods is beyond the scope of this course, and hence only selected methods are discussed in this lesson. Table 14.1 summarizes commonly used methods for analyzing pumping-test data obtained from confined, unconfined and leaky confined aquifers. Depending on the type of pumping-test data and the type of aquifer in which the test is conducted, a wide range of methods are available for analyzing pumping-test data in order to determine aquifer parameters. Different types of pumping tests are available which provide varying types of pumping-test data for confined, unconfined and leaky aquifer systems. As mentioned in Lesson 13, the pumping test yields aquifer parameters averaged over a large and representative volume of the aquifer, and hence it is more reliable than the methods providing essentially point estimates (e.g., slug/bail tests and laboratory methods). However, the pumping test (or ‘aquifer test’) is the standard and most widely used method for determining the hydraulic parameters of aquifers, viz., transmissivity (T), hydraulic conductivity (K), storage coefficient (S), specific yield (S y) and leakage factor (B). As discussed in Lesson 12, there are several methods for the determination of hydraulic parameters of aquifer systems.
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