Search Results       Your search for [subject]Groundwater -- Oregon -- Willamette river valley region. returned 1 record.           Geologic framework of the Willamette lowland aquifer system, Oregon and Washington: regional aquifer-system analysis--Puget-Willamette lowlad GB1025.07 G. by Gannett, Marshall W.; Washington: U.S. Geological Survey, 1998. Subject: Aquifers -- Oregon -- Willamette river valley region.; Aquifers -- Washington (State) -- Puget sound region.; Groundwater -- Oregon -- Willamette river valley region.; Groundwater -- Washington (State) -- Puget sound region..          Add to Book Cart Relevance: 46.23%