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The City of Corvallis, Oregon parks GIS feature was derived from a variety of source maps including; deed descriptions, subdivision plats, certified survey maps and right-of-way plats. All parks were entered into the database using coordinate geometry (COGO). The data provides a representation of park boundaries.
Wetlands digitized from 1'=600' aerial images (02.26.02), following field line work of Pacific Habitat Services.
Protections for riparian corridors determined by City of Corvallis City Council with Natural Features Inventory project, 2004.