Purpose:
Intended as a GIS "Representation" of the NSA Boundary. The National Scenic Area boundary is a management boundary and should not be used to determine lines of title. This document is intended as a tool for planners and surveyors in interpreting the lines depicted on the initial maps on file with the Chief of the USDA Forest Service.
Supplemental_Information:
The legal description of the Columbia River Gorge National Scenic Area is as determined by Public Law 99-663 dated September 1986 and shown on maps on file with the Chief of the USDA Forest Service.
Copies of these maps, copies of the congressional working maps, and USGS digital raster graphic quads were used to determine the map boundaries identified in the legal description written under contract
53-04H1-7-83610. Where the boundary is described as following a topographical feature, the actual location of the feature will control the approximate course identifying that part of the boundary. Unless specifically identified, calls to streams shall be to thread and calls to a ridge will be to the crest. Section, Township, Range lines and Section corners established by the United States Public Land Survey shall determine the actual location of these portions of the boundary so described. Section subdivision lines and corners will be established under the rules of the Unites States Public Land Survey system.
The coordinate data base for the Columbia River Gorge National Scenic Area Boundary description was collected from USGS Digital Raster Graphic quads in UTM NAD27 coordinates. The numbers were then processed using Traverse PC software to determine courses and distances. This is the information used to publish the metes and bounds description. Corpscon software is suggested for conversion to State Plane Grid coordinates. The UTM ASCII files (WA_UTM.asc and OR_UTM.asc) should accompany the description narrative.
The National Scenic Area boundary is a management boundary and should not be used to determine lines of title. This document is intended as a tool for planners and surveyors to interpreting the lines depicted on the initial maps on file with the Chief of the USDA Forest Service.