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Service Description: This polygon coverage is a subset of the larger data set 'GLO Historical Wet Prairie Vegetation of the Willamette Valley, Oregon, 1851-1910'. The 'Select by Attribute' tool was used to with the clause: Where 'VEGTEXT' is equal to 'Seasonally wet prairie May have scattering trees, most with distances > 100 links' This dataset and the larger dataset from which it was extracted, depicts historical vegetation in the Willamette Valley, Oregon, and portions of the Columbia River floodplain in Oregon. It is based on land survey data recorded by General Land Office (GLO) surveyors between 1851 and 1910, including township and section line data. Areas described in the original GLO survey descriptions as 'prairie', were classified as 'wet prairie' base on present day NRCS hydric soil mapping.
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Description: This polygon coverage is a subset of the larger data set 'GLO Historical Wet Prairie Vegetation of the Willamette Valley, Oregon, 1851-1910'. The 'Select by Attribute' tool was used to with the clause: Where 'VEGTEXT' is equal to 'Seasonally wet prairie May have scattering trees, most with distances > 100 links' This dataset and the larger dataset from which it was extracted, depicts historical vegetation in the Willamette Valley, Oregon, and portions of the Columbia River floodplain in Oregon. It is based on land survey data recorded by General Land Office (GLO) surveyors between 1851 and 1910, including township and section line data. Areas described in the original GLO survey descriptions as 'prairie', were classified as 'wet prairie' base on present day NRCS hydric soil mapping.
Service Item Id: ddadba2c7d75439b97dc65c99c0345f1
Copyright Text: Mapping 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), Metro (2007), and the Lower Columbia River Estuary Program (2010).
Spatial Reference:
102100
(3857)
Single Fused Map Cache: false
Initial Extent:
XMin: -1.370801973076027E7
YMin: 5546924.527381476
XMax: -1.3695637979091765E7
YMax: 5559411.082268456
Spatial Reference: 102100
(3857)
Full Extent:
XMin: -1.37662542081E7
YMin: 5393037.846600004
XMax: -1.36195883749E7
YMax: 5779713.532700002
Spatial Reference: 102100
(3857)
Units: esriMeters
Supported Image Format Types: PNG32,PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,BMP
Document Info:
Title: GLO Historical Wet Prairie Vegetation of the Willamette Valley, Oregon, 1851-1910
Author:
Comments: This polygon coverage is a subset of the larger data set 'GLO Historical Wet Prairie Vegetation of the Willamette Valley, Oregon, 1851-1910'. The 'Select by Attribute' tool was used to with the clause: Where 'VEGTEXT' is equal to 'Seasonally wet prairie May have scattering trees, most with distances > 100 links' This dataset and the larger dataset from which it was extracted, depicts historical vegetation in the Willamette Valley, Oregon, and portions of the Columbia River floodplain in Oregon. It is based on land survey data recorded by General Land Office (GLO) surveyors between 1851 and 1910, including township and section line data. Areas described in the original GLO survey descriptions as 'prairie', were classified as 'wet prairie' base on present day NRCS hydric soil mapping.
Subject: The Historic Wet Prairie coverage was extracted from the larger historic vegetation mapping to quantify the historic extent and location of wet prairie at the time of survey. Only 2% of this wetland type is estimated to remain from the original extent. In most cases, wet prairie vegetation present at the time of survey is a close approximation of vegetation prior to widespread changes brought by Euro-american settlement.
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Keywords: wet prairie,historical vegetation,pre-European settlement,Willamette Valley,Oregon,GLO,General Land Office
AntialiasingMode: Fast
TextAntialiasingMode: Force
Supports Dynamic Layers: true
MaxRecordCount: 2000
MaxImageHeight: 4096
MaxImageWidth: 4096
Supported Query Formats: JSON, geoJSON, PBF
Supports Query Data Elements: true
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Max Scale: 0
Supports Datum Transformation: true
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