King County 19970224 Erosion Hazards One vector digital data King County, WA King County None withheld The Sensitive Ares Ordinance (SAO) defines significant erosion hazard areas as those soils in King County that may experience severe to very severe erosion hazard. The SAO adopts the soils definition in the U.S. Department of Agriculture Soil conservation Service (SCS) 1973 King County Coil Survey and the current draft of the Snoqualmie Pass Area Soil Survey (ND). Defines significant erosion hazards for unincorporated areas of King County per the County Sensitive Areas Ordinance Erosion is a natural process of wearing away of land surfaces by falling and running water, wind and glacier scour. Of these geologic forces, erosion by running water is by far the most important within the Puget Sound Basin. The susceptibility of any soil type to erosion depends upon the physical and chemical characteristics of the soil, in addition to its protective vegetative cover, topographic position (slope length and gradient), the intensity of rainfall, and the velocity of runoff water. Whereas erosion is the wearing away of material, sedimentation or deposition is the accumulation of eroded matter where water carrying sediment is slowed. The effects of sedimentation are most pronounced where streams enter Puget Sound and in lowland lakes, ponds, wetland, and stream channels. The natural geologic processes of erosion and sedimentation are frequently accelerated by land use modifications and urban development. The erosion hazard maps show areas of King County where soils are particularly susceptible to increased erosion as a result of development. The regulations in the Sensitive Areas Ordinance for erosion hazards pertain to timing and methods of clearing for development. In general, clearing is restricted to the period between April 1 and November 1. There are two exceptions: 1) clearing of up to 15,000 square feet on individual lots, and 2) timber harvest pursuant to an approved forest practice permit. Clearing for roads and utilities shall occur first with subsequent clearing on individual lots permitted after approval of the associated building permit. A vegetation management plan is required for clearing on individual lots. An erosion control plan is required for all development proposals within erosion hazard areas. Please refer to the Sensitive Areas Ordinance and administrative rules for more details on the regulations. 1990 publication date Complete None planned -122.542250 -121.671459 47.784983 47.131445 Not applicable enviro natural resoures environmental Not applicable King County, WA Pacific NW Washington state None King County data are made available with the understanding that they shall be used exclusively by the obtainer or his/her authorized agents. Digital products may not be reproduced or redistributed in any form or by any means without the express written authorization of King County. Paul McCombs King County Dept. of Environmental Services GIS Data Team Lead Mailing and physical address
900 Oakesdale Ave SW
Renton WA 98055-1219 USA 206-263-4867 http://www5.kingcounty.gov/sdc/DataImages/erode.jpg JPG File of layer overlain on base of WA counties or local cities JPG ESRI ArcCatalog 9.1.0.722 The layer was mapped for the 1990 Sensitive Areas Folio. 1990 Dennis Higgins KCGIS Client Services Manager Converted to GIS by Lisa Vicknair in late 1992/ early 1993. 1993 Dennis Higgins KCGIS Client Services Manager Convert from shapefile - erosion  to SDE feature class 20050919 Holly Orr DDES Metadata imported. withheld 20100712 10420600 Vector Simple FALSE 0 TRUE FALSE coordinate pair 0.001000 0.001000 survey feet D_North_American_1983_HARN Geodetic Reference System 80 6378137.000000 298.257222 1.000000 Explicit elevation coordinate included with horizontal coordinates ERODE_AREA ESRI Feature Class 0 Shape Feature Geometry ESRI Coordinates defining the features Shape Geometry 4 0 0 HAZARD hazard type DDES ERS erosion DDES HAZARD String 3 0 0 EDIT_DATE editi date DDES EDIT_DATE Date 8 0 0 OBJECTID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. OBJECTID OID 4 10 0 Shape.STArea() Shape.STArea() Double 0 0 0 Shape.STLength() Shape.STLength() Double 0 0 0 Cheryl Wilder KCGIS Center Data Sales Coordinator Mailing and physical address
201 S Jackson St, Suite 700
Seattle WA 980914 USA 206-296-7258 /plibrary2/enviro/shapes/polygon/erode.shp King County disclaims any warranty of use of any digital product or data beyond that for which it was designed. ESRI Shapefile withheld Yes CD or DVD Read-only media, if offline Contact KCGIS Client Services for the cost of reproduction - http://www.kingcounty.gov/operations/GIS/GISData/GISDataDistribution.aspx 20100611 King County Dept. of Environmental Services Paul McCombs GIS Data Team Lead Mailing and physical address
900 Oakesdale Ave SW
Renton WA 98055-1219 USA 206-296-7258 firstname.lastname@kingcounty.gov FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time Paul McCombs King County Dept. of Environmental Services GIS Data Team Lead 206-296-7258 900 Oakesdale Ave SW Renton WA 98055-1219 US firstname.lastname@kingcounty.gov ArcGIS Metadata 1.0 Cheryl Wilder KCGIS Center Data Sales Coordinator 206-296-7258 201 S Jackson St, Suite 700 Seattle WA 980914 US Contact KCGIS Client Services for the cost of reproduction - http://www.kingcounty.gov/operations/GIS/GISData/GISDataDistribution.aspx ESRI Shapefile withheld /plibrary2/enviro/shapes/polygon/erode.shp Feature Class http://www5.kingcounty.gov/gisdataportal/Default.aspx Erosion Hazard Areas 1997-02-24 One King County King County, WA King County None For more information about this layer please see the <a href='https://www5.kingcounty.gov/sdc?Layer=ERODE_AREA' rel='nofollow ugc'>GIS Data Catalog</a>.<br /><br />The 1990 King County Sensitive Ares Ordinance (SAO) defines significant erosion hazard areas as those soils in King County that may experience severe to very severe erosion hazard. The 1990 KC SAO adopted the soils definition in the US Department of Agriculture Soil conservation Service (SCS) 1973 King County Soil Survey and the then current draft of the Snoqualmie Pass Area Soil Survey (No Date). The full text included in the 1990 Sensitive Areas Ordinance Folio is included below. I: Erosion Hazard Areas. Erosion is a natural process of wearing away of land surfaces by falling and running water, wind, and glacial scour. Of these geologic forces, erosion by running water is by far the most important within the Puget Sound Basin. The susceptibility of any soil type to erosion depends upon the physical and chemical characteristics of the soil, in addition to its protective vegetative cover, topographic position (slope length and gradient), the intensity of rainfall, and the velocity of runoff water. Whereas erosion is the wearing away of material, sedimentation or deposition is the accumulation of eroded matter where water carrying sediment is slowed. The effects of sedimentation are most pronounced where streams enter Puget Sound and in lowland lakes, ponds, wetlands, and stream channels. The natural geologic processes of erosion and sedimentation are frequently accelerated by land use modifications and urban development. The erosion hazard maps show areas of King County where-soils are particularly susceptible to increased erosion as a result of development. II: Definition. The Sensitive Areas Ordinance (SAO) defines erosion hazard areas as those soils in King County that may experience severe to very severe erosion hazard. The SAO adopts the soils definitions in the US Department of Agriculture Soil Conservation Service (SCS) 1973 King County Soil Survey and the current dra Defines erosion hazard areas for unincorporated areas of King County first mapped for the King County Sensitive Areas Ordinance and published in the 1990 Sensitive Area Ordinance Folio. King County GIS Center Permitting GIS Program Manager GIS Data Team Lead 206-263-4867 900 Oakesdale Ave SW Renton WA 98055-1219 US http://www5.kingcounty.gov/sdc/DataImages/erode.jpg JPG File of layer overlain on base of WA counties or local cities JPG Not applicable Washington state King County WA Pacific NW Not applicable natural resources environmental enviro erosion hazard natural resourcesenvironmentalenviroerosionhazardenvironmentWashington stateKing CountyWAPacific NWERODE_AREA (295)_AREA King County disclaims any warranty of use of any digital product or data beyond that for which it was designed. <p><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, &quot;Avenir Next&quot;; line-height: 1.5;' rel='nofollow ugc noopener noreferrer'><u>https://kingcounty.gov/en/dept/kcit/data-information-services/gis-center/about/terms-conditions-copyrights</u></a></p> publication date 1993-01-01T00:00:00 Version 6.2 (Build 9200) ; Esri ArcGIS 10.7.1.11595 1 -122.542250 -121.671459 47.784983 47.131445 The layer was mapped for the 1990 Sensitive Areas Folio. 1990-01-01T00:00:00 Dennis Higgins KCGIS Client Services Manager Converted to GIS by Lisa Vicknair in late 1992/ early 1993. 1993-01-01T00:00:00 Dennis Higgins KCGIS Client Services Manager Convert from shapefile - erosion  to SDE feature class 2005-09-19T00:00:00 Holly Orr DDES Updated meta data: Title changed Supplemental Information removed and placed in Description Summary changed Description enhanced with full text from 1990 SAO Map folio. More detail that previously contained in Supplemental Information. Theme Keywords changed 2026-03-02T00:00:00 Paul McCombs King County Dept. of Environmental Services GIS Data Team Lead 206-296-7258 900 Oakesdale Ave SW Renton WA 98055-1219 US firstname.lastname@kingcounty.gov Paul McCombs 20130109 16010600 1.0 ERODE_AREA 002 1220254.875000 1431818.500000 52556.086000 287487.531000 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/10.7'><WKT>PROJCS[&quot;NAD_1983_HARN_StatePlane_Washington_North_FIPS_4601_Feet&quot;,GEOGCS[&quot;GCS_North_American_1983_HARN&quot;,DATUM[&quot;D_North_American_1983_HARN&quot;,SPHEROID[&quot;GRS_1980&quot;,6378137.0,298.257222101]],PRIMEM[&quot;Greenwich&quot;,0.0],UNIT[&quot;Degree&quot;,0.0174532925199433]],PROJECTION[&quot;Lambert_Conformal_Conic&quot;],PARAMETER[&quot;False_Easting&quot;,1640416.666666667],PARAMETER[&quot;False_Northing&quot;,0.0],PARAMETER[&quot;Central_Meridian&quot;,-120.8333333333333],PARAMETER[&quot;Standard_Parallel_1&quot;,47.5],PARAMETER[&quot;Standard_Parallel_2&quot;,48.73333333333333],PARAMETER[&quot;Latitude_Of_Origin&quot;,47.0],UNIT[&quot;Foot_US&quot;,0.3048006096012192],AUTHORITY[&quot;EPSG&quot;,2926]]</WKT><XOrigin>-117104300</XOrigin><YOrigin>-99539600</YOrigin><XYScale>4000</XYScale><ZOrigin>0</ZOrigin><ZScale>1</ZScale><MOrigin>0</MOrigin><MScale>1</MScale><XYTolerance>0.002</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><WKID>2926</WKID><LatestWKID>2926</LatestWKID></ProjectedCoordinateSystem> 20200708 22443900 20260303 20075300 FGDC 150000000 5000 dataset EPSG 8.9.3(9.0.0) 0 20260303