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| accessInformation: | Portland Bureau of Planning and Sustainability |
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| description: | Willamette and Columbia River ordinary high water (OHW) for the City of Portland area, as surveyed by the U.S. Army Corps of Engineers in 2004. Derived from 2010 bathymetric data and 2014 regional LiDAR elevation data. -- Additional Information: Category: Hydro Purpose: For mapping and analyzing normal river levels per Army Corps surveys. Update Frequency: None Planned -- Metadata Link: https://www.portlandmaps.com/metadata/index.cfm?&action=DisplayLayer&LayerID=53396 |
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| title: | Willamette/Columbia River Ordinary High Water |
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| culture: | en-US |
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