Description: The coverage was created to identify the types of vegetation present historically and to quantify their extent at the time of survey. In most cases, vegetation present at the time of survey is a close approximation of vegetation prior to widespread changes wrought by Euroamerican settlement.
This polygon coverage depicts historical vegetation in the Willamette Valley, Oregon, including portions of Clark County, Washington along the Columbia River. It is based on land survey data recorded by General Land Office (GLO) surveyors between 1851 and 1910, including township and section line data. It was completed in stages, funded by the Oregon Department of State Lands (1995, 1996), the USDI Bureau of Land Management (1995, 1997, 1999), the Oregon Community Foundation (1997), the Environmental Protection Agency (1997), the City of Portland Bureau of Environmental Services (1997), the Oregon Department of Fish and Wildlife (2000), the USDA Forest Service (2002, 2008), The Nature Conservancy (2007), and Metro (2007).
Copyright Text: Ted Labbe Identified the Oak prominent and the Occassional oak communities