Name: Oregon Wildland Urban Interface (2020)

Display Field: blk10

Type: Feature Layer

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Description: The wildland-urban interface (WUI) is the area where structures and other human development meet or intermingle with undeveloped wildland, and it is where wildfires have their greatest impacts on people. The WUI is composed of both interface and intermix communities. The distinction between these is based on the characteristics and distribution of houses and wildland vegetation across the landscape. Intermix WUI refers to areas where housing and wildland vegetation intermingle, while interface WUI refers to areas where housing is in the vicinity of a large area of dense wildland vegetation.In this dataset, the University of Wisconsin's 2010 SILVIS WUI dataset was used as a base WUI. To this, ODF brought in local data from past Community Wildfire Protection Plan (CWPP) and Wildland Urban Interface (WUI) data from all counties in Oregon to capture WUI areas locally designated and/or established after 2010. In addition, the Oregon Department of Land Conservation and Development (DLCD) 2017 Land Use Zoning was also used to attribute some areas that were not attributed as WUI in the 2010 SILVIS WUI dataset. Wildfire hazard values were assigned to each WUI area largely based on Burn Probability from the 2018 PNW Quantitative Wildfire Risk Assessment, modified to accommodate local designations where applicable.----------------------------------------An ArcGIS symbology layer file is associated with this dataset to show the wildfire hazard ratings as seen in the metadata browse graphic. The attribute field used is "Modified_Rating_QWRA18BP_CWPP."Other attribute fields that may be useful are:WUIClass_Modified_Oregon - shows wui class interface and intermix from SILVIS WUI and DLCD zoning where applicable.WUIClass10 - is the original SILVIS WUI designation as of 2010. Prior WUIClass90 etc may be usful for change detection studies.OR_WUI_Community - shows locally named community names - sometimes very close neighborhood names are concatenated and could be cleared up in the next update of this dataset.--------------------------------------------------------------------------------Processing steps:----------------------------------------Gathering the WUI polygon data:Spatial Joins to the source SILVIS WUI dataset: CWPPs, "Locally Named Communities" (from 2012-2017 WUI & CWPPs), City Limits, Structural Fire Districts, and 5 mile buffer of all Oregon town points to capture very rural towns without City Limits and to capture the towns at risk in the Pyrologix/USFS 2018 PNW QWRA Supplemental Briefing Paper "Exposure of human communities to wildfire in the Pacific Northwest"http://pyrologix.com/wp-content/uploads/2019/11/RiskToCommunities_OR-WA_BriefingPaper.pdfSpatial Join with DLCD Oregon 2017 Land Use Zoning.Deleted all polys from WUI that were not WUI or a Locally Named Comunity, FedRegister, or Land Use zone that appeared to be built-environment. For example, some rural areas had a DLCD residential zoning, or other built environment, etc., but Silvis had it as "Uninhabited_Veg" etc.Checked with West Wide Wildfire Risk Assessment "Where People Live" data - there was not enough of a difference to further process with WPL to add data in (very low density veg).Err'd on the side of inclusion - kept many areas that are "Very Low Density Veg," "Very Low Density NoVeg," and "Uninhabited Veg" in the SILVIS WUI due to local community presense and/or DLCD residential or rural built-environment zoning.----------------------------------------Associated with QWRA to obtain Wildfire Hazard values:Calculated Zonal Statistics for each poly using "Burn Probability" for hazard ratings to wui polys. Adjusted hazard levels up in cases where local info / National Fire Plan Coordinator informed the hazard levels. Translated burn probability values into 7 adjective classes based on the Pyrologix/QWRA classification, merged down to 3 main classes (low, moderate, high).----------------------------------------

Service Item Id: a8fe1562ca8e4c5e8c43523983e2ff5b

Copyright Text: Source WUI data from: Radeloff, Volker C.; Helmers, David P.; Kramer, H. Anu; Mockrin, Miranda H.; Alexandre, Patricia M.; Bar Massada, Avi; Butsic, Van; Hawbaker, Todd J.; Martinuzzi, Sebastián; Syphard, Alexandra D.; Stewart, Susan I. 2017. The 1990-2010 wildland-urban interface of the conterminous United States - geospatial data. 2nd Edition. Fort Collins, CO: Forest Service Research Data Archive. http://silvis.forest.wisc.edu/data/wui-change/ USFS RDA link: http://www.fs.usda.gov/rds/archive/catalog/RDS-2015-0012-2 Wildfire Hazard Ratings from: Pacific Northwest Quantitative Wildfire Risk Assessment. 2018. USFS Pacific NW & Alaska Regions/BLM State Office. Portland, OR. Project Manager: Rick Stratton; Contractor: Pyrologix. http://oregonexplorer.info/topics/wildfire-risk?ptopic=62 http://oe.oregonexplorer.info/externalcontent/wildfire/reports/20170428_PNW_Quantitative_Wildfire_Risk_Assessment_Report.pdf CWPP info from county CWPPs of Oregon: https://www.oregon.gov/odf/Fire/Pages/CWPP.aspx Land use zoning from: Oregon Department of Land Conservation and Development (DLCD) 2017 Land Use Zoning dataset. http://www.oregon.gov/lcd/About/Pages/Maps-Data-Tools.aspx Structural Fire District data from Oregon State Fire Marshall. GIS processing by Oregon Dept of Forestry Protection Division, Salem, OR.

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