Estimated Depth to Ground Water and Configuration of the Water Table in the Portland, Oregon Area

Scientific Investigations Report 2008–5059

U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2008–5059

Figure - refer to figure caption for alternative text description

Figure 11. Estimated seasonal water-table fluctuations by hydrogeologic unit in the Portland, Oregon area. (Values of seasonal water-table fluctuation presented are the trimmed values that include the central 90 percent of the water-level measurements for the period of record for each well.)

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