NSA_LANDUSE_DESIGNATION
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This Land Use Designation data was adopted by the Columbia River Gorge Commission on October 13, 2020. It represents a comprehensive effort to clarify the boundaries of Land Use Designations in the General Management Area portions of the Columbia River Gorge National Scenic Area.</SPAN></P><P><SPAN>Mapping technology has evolved greatly since the establishment of the Columbia River Gorge National Scenic area, and the subsequent delineation of the Exterior, Special Management Area, Urban, and Land Use Designation boundaries. By the late 90’s, county planning offices began to rely upon GIS technology, so an effort was made to translate the original hand-drawn LUD maps into digital representations. A lack of accurate base data hampered this effort, and planners were confronted with LUD boundaries that were non-congruent with other digital data such as taxlot lines and road centerlines.</SPAN></P><P><SPAN>At the beginning of the Gorge 2020 Management Plan review, Gorge Commission staff decided to make an effort to clarify LUD boundaries in the GMA to be presented for adoption along with the revised Plan. Building upon an earlier effort focused solely on Multnomah County, staff followed a deliberate process to re-establish LUD boundaries to coincide with the alignments originally intended:</SPAN></P><P><SPAN STYLE="font-weight:bold;">1. Obtained Authoritative Reference Data</SPAN></P><P STYLE="text-indent:20;margin:1 1 1 20;"><SPAN>Current Spatial Data</SPAN></P><P STYLE="text-indent:20;margin:1 1 1 40;"><SPAN STYLE="font-style:italic;">Taxlots (Counties)</SPAN></P><P STYLE="text-indent:20;margin:1 1 1 40;"><SPAN STYLE="font-style:italic;">Elevation Contours (USGS)</SPAN></P><P STYLE="text-indent:20;margin:1 1 1 40;"><SPAN STYLE="font-style:italic;">Rivers, Streams, Waterbodies (USGS, NHD)</SPAN></P><P STYLE="text-indent:20;margin:1 1 1 40;"><SPAN STYLE="font-style:italic;">Recently delineated Exterior, Urban Area, and Special Management Area boundaries</SPAN></P><P STYLE="text-indent:20;margin:1 1 1 20;"><SPAN>Historical Hard-copy Data</SPAN></P><P STYLE="text-indent:20;margin:1 1 1 20;"><SPAN STYLE="font-style:italic;">Hand drafted maps (1991)</SPAN></P><P STYLE="text-indent:20;margin:1 1 1 20;"><SPAN STYLE="font-style:italic;">Management Plans</SPAN></P><UL STYLE="margin:0 0 0 0;padding:0 0 0 0;"><LI><P><SPAN STYLE="font-style:italic;">Files and maps from Multnomah County LUD Project</SPAN></P></LI></UL><P><SPAN STYLE="font-weight:bold;">2. Developmed criteria for adjusting LUD lines</SPAN></P><P STYLE="text-indent:20;"><SPAN>Referenced work flows and guidelines for LUD clarifications developed by previous GIS staff for Multnomah County project</SPAN></P><P STYLE="text-indent:20;"><SPAN>Using the </SPAN><SPAN STYLE="font-style:italic;">Management Plan </SPAN><SPAN>as a guide, determined which Land Use Designations were more likely to be defined by: </SPAN></P><P STYLE="text-indent:20;margin:1 1 1 20;"><SPAN>Man-made features (taxlots &amp; road centerlines) or</SPAN></P><P STYLE="text-indent:20;margin:1 1 1 20;"><SPAN>Natural features (waterways/waterbodies, topographic features such as ridgetops or lines of elevation)</SPAN></P><P><SPAN STYLE="font-weight:bold;">3. Adjusted LUD boundaries to coincide with appropriate reference data</SPAN></P><UL STYLE="margin:0 0 0 0;padding:0 0 0 0;"><LI><P><SPAN>Used a square grid to track progress and ensure methodical and complete coverage</SPAN></P></LI><LI><P><SPAN>Referenced existing GIS data, original hand drawn maps, and management plan to verify intent</SPAN></P></LI><LI><P><SPAN>Marked questionable areas for further review with Gorge Commission staff and County Planning staffs</SPAN></P></LI></UL><P><SPAN STYLE="font-weight:bold;">4. Shared clarified boundaries with County Planners</SPAN></P><UL STYLE="margin:0 0 0 0;padding:0 0 0 0;"><LI><P><SPAN>Hosted a workshop for County Planners on October 15th, 2019</SPAN></P></LI><LI><P><SPAN>An </SPAN><A href="https://crgc.maps.arcgis.com/apps/webappviewer/index.html?id=526240acf9ac499bb458e03360f4337b"><SPAN>online mapping application</SPAN></A><SPAN>was made available for easy review and comment by County Planning staffs</SPAN></P></LI><LI><P><SPAN>The LUD data layer was shared with GIS staff when requested</SPAN></P></LI><LI><P><SPAN>Accepted comments submitted by County Planners</SPAN></P></LI><LI><P><SPAN>Resolved outstanding issues noted by County Planners during their review</SPAN></P></LI></UL><P><SPAN /></P></DIV></DIV></DIV>
nan
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