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This report summarizes the hydraulic characteristics of the materials that make up the Willamette Lowland aquifer system, ground-water movement in the aquifer system, estimates of ground-water recharge, ground-water quality characteristics, construction and use of cross-sectional numerical ground-water flow models, hydrologic controls on ground-water movement, water budgets and flow paths, and a description and application of a conceptual model.
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USGS Numbered Series
Hydrogeologic framework of the Willamette Lowland aquifer system, Oregon and Washington