AbstractPassive‐element electric analog models have been used for many years as a means of tudying cause and effect relationships in the regional development of ground‐water resources. Although successful use of such models has been demonstrated by several investigators, certain inherent characteristics designed into some electric analog models lead to significant error at particular boundaries of the model.Errors that exist at the pumped well junctions of non‐steady‐state two‐dimensional flow electric analog models are analyzed. The results of the analysis indicate that practical sustained yields and water‐level data derived from pumped well junctions of electric analog models lead to overly optimistic estimates of aquifer and well yielding capabilities. This paper presents design methods for simulating pumped wells having different radii, screen lengths, partial penetrations, gravel pack sizes, and well‐l
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