Introduction 1 Geohydrologic setting for the aquifer test 1 Aquifer-test design 3 Production well 3 Piezometers 3 Samples of water quality 5 Withdrawals from the production well 5 Geohydrology of the test site 5 Geophysical logs 5 Chemical quality of water samples 5 Hydraulic heads under unstressed conditions 5 Anisotropy ratio 9 Hydraulic communication with production well 9 Aquifer-test results 12 Digital model 12 Row equations 12 Geohydrologic system assumed for the model 14 Extent of modeled volume 14 Estimation of aquifer characteristics and apportionment in model 14 Specific storage 15 Specific yield 17 Hydraulic conductivity parallel to the beds 17 Hydraulic conductivity normal to the beds 17 Simulation of stable initial condition 18 Representation of the stress of the aquifer test 18 Calibration 19 Summary and conclusions 22 References cited 23 Metric conversion factors 24 Contents III IV Contents
The computer program documented in Open-File Report 80-421 has continued to evolve in response to needs. Changes as of January 1981 included the following: (1) Treatment of head-dependent boundaries and specified-flow boundaries; and (2) code which executes on the CRAY-1 computer. This report provides instructions for compiling and executing the computer program on the CRAY-1 at Kirtland Air Force Base.
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