20230309 08332900 1.0 FGDC 002 contour020_line 1214990.079779 1583702.181892 30934.574108 319461.146636 1 Projected GCS_North_American_1983_HARN Linear Unit: Foot_US (0.304801) NAD_1983_HARN_StatePlane_Washington_North_FIPS_4601_Feet <ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/3.5.0'><WKT>PROJCS["NAD_1983_HARN_StatePlane_Washington_North_FIPS_4601_Feet",GEOGCS["GCS_North_American_1983_HARN",DATUM["D_North_American_1983_HARN",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["False_Easting",1640416.666666667],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-120.8333333333333],PARAMETER["Standard_Parallel_1",47.5],PARAMETER["Standard_Parallel_2",48.73333333333333],PARAMETER["Latitude_Of_Origin",47.0],UNIT["Foot_US",0.3048006096012192],AUTHORITY["EPSG",2926]]</WKT><XOrigin>-117104300</XOrigin><YOrigin>-99539600</YOrigin><XYScale>37926742.22403606</XYScale><ZOrigin>0</ZOrigin><ZScale>1</ZScale><MOrigin>0</MOrigin><MScale>1</MScale><XYTolerance>0.0032808333333333331</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><WKID>2926</WKID><LatestWKID>2926</LatestWKID></ProjectedCoordinateSystem> 20251031 13513000 20251031 13513000 FALSE FGDC CSDGM Metadata For more information about this layer please see the <a href='https://www5.kingcounty.gov/sdc?Layer=CONTOUR020_LINE' rel='nofollow ugc'>GIS Data Catalog</a>. Twenty (20) foot interval elevation contours for King County, derived primarily from 2021 lidar. The 20 foot contours are a subset of the 5 foot contour layer.The contour interval represents a best compromise between the vertical and horizontal accuracy of the source data and the need for a general use cartographic and analysis product. The data provide a reasonable depiction of the general shape of the land, useful for determining general landform, slope, and elevation. These contours are provided only as an interpretation of the earth's surface for reference use and do not replace the need for a professional land survey. Elevation Contour Lines for King County - 20 Foot Index Contours 2024-02-01T00:00:00 One vector digital data None King County GIS Center Seattle WA 98104 US Valerie Bright IT Engineer publication date 2021-09-01T00:00:00 -122.566585 -121.060958 47.875557 47.071867 1 King County GIS Center 201 S Jackson St, Suite 706 Seattle WA 98104 US ContoursElevation dataDigital Elevation ModelelevationWashington statePacific NWKing CountySeattleCONTOUR020_LINE (85)_LINE Contours Elevation data Digital Elevation Model 20 foot interval elevation contour lines for King County, derived primarily from 2021 lidar. King County King County disclaims any warranty of use of any digital product or data beyond that for which it was designed. <a target='_blank' href='https://kingcounty.gov/en/dept/kcit/data-information-services/gis-center/about/terms-conditions-copyrights' style='border-width: 0px; border-style: solid; border-color: currentcolor; --tw-shadow: 0 0 #0000; --tw-ring-inset: ; --tw-ring-offset-width: 0px; --tw-ring-offset-color: #fff; --tw-ring-color: rgb(59 130 246 / 0.5); --tw-ring-offset-shadow: 0 0 #0000; --tw-ring-shadow: 0 0 #0000; --container-full-height: calc(100vh - 1rem); --container-max-height: 100vh; --dialog-max-height: 90vh; --tw-border-spacing-x: 0; --tw-border-spacing-y: 0; --tw-translate-x: 0; --tw-translate-y: 0; --tw-rotate: 0; --tw-skew-x: 0; --tw-skew-y: 0; --tw-scale-x: 1; --tw-scale-y: 1; --tw-pan-x: ; --tw-pan-y: ; --tw-pinch-zoom: ; --tw-scroll-snap-strictness: proximity; --tw-gradient-from-position: ; --tw-gradient-via-position: ; --tw-gradient-to-position: ; --tw-ordinal: ; --tw-slashed-zero: ; --tw-numeric-figure: ; --tw-numeric-spacing: ; --tw-numeric-fraction: ; --tw-shadow-colored: 0 0 #0000; --tw-blur: ; --tw-brightness: ; --tw-contrast: ; --tw-grayscale: ; --tw-hue-rotate: ; --tw-invert: ; --tw-saturate: ; --tw-sepia: ; --tw-drop-shadow: ; --tw-backdrop-blur: ; --tw-backdrop-brightness: ; --tw-backdrop-contrast: ; --tw-backdrop-grayscale: ; --tw-backdrop-hue-rotate: ; --tw-backdrop-invert: ; --tw-backdrop-opacity: ; --tw-backdrop-saturate: ; --tw-backdrop-sepia: ; --tw-contain-size: ; --tw-contain-layout: ; --tw-contain-paint: ; --tw-contain-style: ; color: rgb(24, 112, 137); font-family: Cabin, "Avenir Next"; line-height: 1.5;' rel='nofollow ugc noopener noreferrer'>https://kingcounty.gov/en/dept/kcit/data-information-services/gis-center/about/terms-conditions-copyrights</a> Esri ArcGIS 13.5.0.57366 http://www5.kingcounty.gov/sdc/DataImages/contour005.jpg JPG File of layer overlain on base of WA counties or local cities JPG Washington state Pacific NW King County Seattle dataset 20220809 King County GIS Center giscenter@kingcounty.gov 201 S Jackson St KSC-IT-225 Seattle WA 98104 US Data from 2004 3di West for Snoqualmie, Green River Study was integrated into master elevation database. This new elevation control was assembled from stereo pair orthoimagery, and approximates 2-foot contour accuracy necessary for FEMA flood plain mapping. The TIN surface created for the project was converted to a point dataset and then incorporated into the elevation database similar to the original lidar data. Data from 2007 Ground LiDAR ascii data from Watershed Science for parts of White River are integrated into master elevation database. This is the first update that was converted from Arc\Info GRID\AML to ARCGIS SDE RASTER\Python. See documentation: DGM Update Procedure.doc The following townships were updated: T19R06 T19R07 T21R04 T21R05 T21R06 T22R04 T22R05 T23R04 T23R05 T24R04 T24R07 T25R06 T25R07 T26R06 T26R07 T27R06 Contours built from dgm township GRIDs, neat clipped, then appended together without edge matching. 2016 Quantum Spatial lidar update for western part of county. Township contours updated: t19r08, t19r09, t19r10, t20r07, t20r08, t20r09, t20r10, t21r07, t21r08, t22r07, t22r08, t22r09, t22r10, t22r11, t23r07, t23r08, t23r09, t23r10, t23r11, t24r07, t24r08 Townships updated: t21r04, t21r05, t23r07, t24r07, 2017 Lidar Update Produce tile list of DXF contours needed by intersecting p_lidar_all extent layer with index layer idxp7500. Write python script gisimage\images\ElevMaint\ctr27500\clip_dxf3.py to: Check for existence of DXF file If no file, then Select each tile. Build a clip. Clip SDE layer GISPROD plib.sde.plibrary.TOPO.contour005_line. ExportCAD_conversion using DXF_R2004 option 2006-11-26T00:00:00 Tiles are clipped from contour005 using the 7500 index squares. Contours are then converted into Autocad version 2004 DXF format. 2008-11-28T00:00:00 Contours are derived from the latest DGM mosaic model. A 5 foot county wide contour layer is maintained in SDE Maint. Township DGM are extracted from the mosaic, contoured at 5 feet, the old township selected and deleted, and the new contour township appended back. Separate township layers are produced for posting to shapefiles and ftp portal. 5 Index contour layers for the county are also produced by selection from the master county wide 5 foot contour layer. 10, 20, 40, 50 and 100 foot contour indexes for the county are produced. 2016-10-25T00:00:00 Townships updated: t19r07, t20r04, t20r05, t20r06, t20r07, t21r02, t21r03, t21r04, t21r05, t21r06, t21r07, t21r08, t21r09, t21r10, t21r11, t22r02, t22r03, t22r04, t22r05, t22r06, t22r07, t22r08, t22r09, t22r10, t22r11, t23r02, t23r03, t23r04, t23r05, t23r06, t23r07, t23r08, t23r09, t24r03, t24r04, t24r05, t24r06, t24r07, t24r08, t25r03, t25r04, t25r05, t25r06, t25r07, t25r08, t25r09, t25r10, t26r03, t26r04, t26r05, t26r06, t26r07, t26r08, t26r09, t26r10, t27r03, t27r04, t27r05, t27r06, t27r07 2017-09-15T00:00:00 Lidar update Lidar update 2019 from Cedar, Green, Snoqualmie, & South Vashon pts. 2019-07-29T00:00:00 County-wide lidar update for 2021. 2021-12-01T00:00:00 Contours were created on a tile by tile basis, then merged together into one county-wide layer. 1 Contours cover the entirety of each tile to the extent that LiDAR data is available for that area. No gaps occur within the contour lines. 1 Enterprise Geodatabase Feature Class EPSG 8.9.3(9.0.0) GISC.reg_ctr005_line Elevation contour lines ESRI Feature Class 644006 OBJECTID Internal feature number. ESRI 2659999 2660000 2660001 2660002 2660003 2660004 2660005 2660006 Sequential unique whole numbers that are automatically generated. OBJECTID OID 4 10 0 ELEVATION Elevation of contour isoline in feet KCGISC ELEVATION Double 8 11 0 SHAPE Feature geometry. ESRI Coordinates defining the features. Shape Geometry 4 0 0 Shape.STLength() Shape.STLength() Double 0 0 0 127274 Simple FALSE 127274 TRUE FALSE