Latitude
(
type: esriFieldTypeDouble, alias: Latitude
)
Protection_agency
(
type: esriFieldTypeSmallInteger, alias: ProtectionAgency
, Coded Values:
[1: State (ODF) or Association District (CFPA, DFPA, WRPA)]
, [2: Other ODF Unit or Association District (not CA, WA, ID)]
, [3: Federal agency - USDA Forest Service, (USFS)]
, ...5 more...
)
Federal_lands
(
type: esriFieldTypeSmallInteger, alias: FireOriginFederalLands
, Coded Values:
[1: Originated on OR was a threat to paying]
, [2: Originated Federal/Non Patrol; spread to paying]
, [3: Originated Federal/Non Patrol; threat to paying]
)
Land_Class
(
type: esriFieldTypeSmallInteger, alias: LandClass
, Coded Values:
[1: Private Class 1 and 2]
, [2: Private Class 3]
, [3: Zone 1 land (Grant County) Paying land inside the district]
, ...8 more...
)
Specific
(
type: esriFieldTypeSmallInteger, alias: SpecificCause
, Coded Values:
[1: Smoke chase thought to be lightning]
, [2: Smoke chase thought to be human-caused]
, [3: Debris burning, no action taken]
, ...138 more...
)
Involve_op
(
type: esriFieldTypeSmallInteger, alias: Involve_op
, Coded Values:
[1: No Operation Involved]
, [2: Result of the Operation (including Slash)]
, [3: Operation in Progress, but not a result of]
, ...1 more...
)
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Description: OverviewORS 477.490 requires Oregon Sate University (OSU) and the Oregon Department of Forestry (ODF) to develop a statewide wildland-urban interface (WUI) map that will be used in conjunction with the statewide wildfire hazard map (ORS 477.490) by the Oregon State Fire Marshal to determine on which properties defensible space standards apply (ORS 476.392) and by the Building Codes Division to determine to which structures home hardening building codes apply (ORS 455.612). Rules directing development of the WUI are listed in OAR-629-044-1011 and 629-044-1016. A comprehensive description of datasets and geospatial processing is available at https://hazardmap.forestry.oregonstate.edu/understand-map. The official statewide WUI map is available on the Oregon Wildfire Risk Explorer at https://tools.oregonexplorer.info/viewer/wildfire. Following is an overview of the data and methods used develop the statewide WUI map. Wildland-Urban InterfaceCreating a statewide map of the WUI involved two general steps. First, we determined which parts of Oregon met the minimum building density requirements to be classified as WUI. Second, for those areas that met the minimum building density threshold, we evaluated the amount and proximity of wildland or vegetative fuels. Following is a summary of geospatial tasks used to create the WUI. Develop a potential WUI map of all areas that meet the minimum density of structures and other human development - According to OAR 629-044-1011, the boundary of Oregon’s WUI is defined in part as areas with a minimum building density of one building per 40 acres, the same threshold defined in the federal register (Executive Order 13728, 2016), and any area within an Urban Growth Boundary (UGB) regardless of the building density. Step One characterizes all the locations in Oregon that could be considered for inclusion in the WUI on building density and UGB extent alone. The result of Step One was a map of potential WUI which was then further refined into final WUI map based on fuels density and proximity in Step Two. Compile statewide tax lots. Map all eligible structures and other human development. Simplify structure dataset to no more than one structure per tax lotCalculate structure density and identify all areas with greater than one structure per 40 acresAdd urban growth boundaries to all the areas that meet the density requirements from the previous step.Classify WUI based on amount and proximity of fuel. The WUI is also defined by the density and proximity of wildland and vegetative fuels (“fuels”). By including density and proximity of fuels in the definition of the WUI, the urban core is excluded, and the focus is placed on those areas with sufficient building density and sufficient fuels to facilitate a WUI conflagration. Consistent with national standards, we further classified the WUI into three general classes to inform effective risk management strategies. The following describes how we refined the potential WUI output from step one into the final WUI map.Intermix WUI: Areas that met the minimum building density threshold in step one and which had at least 50% vegetative or wildland fuel cover were classified as Intermix WUIInterface WUI: Interface WUI includes areas that met the minimum building density threshold in step one, and which had less than 50% vegetative and/or wildland fuel cover but were within 1.5 miles of a large patch (≥ 2 sq. miles) of at least 75% vegetation and/or wildland fuelsOccluded WUI includes areas that met the minimum building density threshold in step one, and which had less than 50% vegetative and/or wildland fuel cover but were within 1.5 miles of a moderate patch (1 – 2 sq. miles) of at least 75% vegetation and/or wildland fuels.Detailed geospatial processing steps are described in the technical guide available at https://hazardmap.forestry.oregonstate.edu/understand-map
Copyright Text: Data developed by Chris Dunn and Andy McEvoy at Oregon State University (andy.mcevoy@oregonstate.edu).
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Color: [255, 0, 0, 255] Background Color: N/A Outline Color: N/A Vertical Alignment: bottom Horizontal Alignment: center Right to Left: false Angle: 0 XOffset: 0 YOffset: 0 Size: 8 Font Family: Arial Font Style: normal Font Weight: normal Font Decoration: none
Description: This layer contains features of aerial fire retardant avoidance areas delivered as part of the 2011 Nationwide Aerial Application of Fire Retardant on National Forest System Land Environmental Impact Statement. This Feature Class shows areas, provided by each National Forest who used aerial fire retardant from 2000-2010, where the aerial application of fire retardant should be avoided in order to prevent the potential of impacts to Federally listed threatened or endangered species as identified through consultation, or Forest Service sensitive species. Data includes location of terrestrial and hydrographic areas where the application of aerial fire retardant is to be avoided. Current aerial fire retardant standards prohibit application within 300 feet of hydrographic features. Therefore, this data may contain duplicate hydrographic areas already covered by existing standards. This data is to be used in planning and implementation phases of USFS fire activities to help prevent misapplication of aerial fire retardant in known areas of TES species or water features throughout National Forest lands. Provided here is a feature class developed by Region 6 depicting hydrographic areas where applications of fire retardant should be avoided. The feature class polygons depict perennial and intermittent STREAMS buffered by 300 feet using the National Hydrography Dataset (NHD) flowlines and waterbodies data. The polygons depicting critical habitat on intermittent streams is based on 3 feature classes, US Geological Survey (USGS) hydrological flowlines, US Fish & Wildlife Service (USFW) Bull Trout Critical Habitat and National Oceanic and Atmospheric Administration (NOAA) National Marine Fisheries Services Salmon Critical Habitat data. The bull trout and salmon critical habitat data used for this feature class was a version of the data that had been merged together by the Region 6 Fire and Aviation Management group. This data was further altered by merging and clipping. Attribute data was alter by deleting most attributes associated with the NHD data and adding appropriate fields and attributes. This feature class is a product of Pacific Northwest Region Data Resources Management.