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The wildland urban interface (WUI) is defined as areas where homes are built near or among lands prone to wildland fire
Interface
The INTERFACE is often found along the outskirts of urban area.
The WILDLAND-URBAN INTERFACE is defined as those areas where human development MEETS areas that are covered with more than 50% wildlands.
To be considered INTERFACE, development/structures must be bordered by wildlands on at least one side.
Intermix
WILDLAND-URBAN INTERMIX are those areas where structures intermingle with wildlands. To be considered intermix, a development OR structure must be surrounded on 2 or more sides by wildlands. INTERMIX is often found between the INTERFACE and the WILDLANDS. INTERMIX can also be found in undeveloped/low-density pockets of urban areas. |
| summary:
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The wildland urban interface (WUI) is defined as areas where homes are built near or among lands prone to wildland fire
Interface
The INTERFACE is often found along the outskirts of urban area.
The WILDLAND-URBAN INTERFACE is defined as those areas where human development MEETS areas that are covered with more than 50% wildlands.
To be considered INTERFACE, development/structures must be bordered by wildlands on at least one side.
Intermix
WILDLAND-URBAN INTERMIX are those areas where structures intermingle with wildlands. To be considered intermix, a development OR structure must be surrounded on 2 or more sides by wildlands. INTERMIX is often found between the INTERFACE and the WILDLANDS. INTERMIX can also be found in undeveloped/low-density pockets of urban areas. |
| extent:
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[[-122.445815314369,38.0079026239762],[-120.006172052964,39.6437456019451]] |
| accessInformation:
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| thumbnail:
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thumbnail/thumbnail.png |
| maxScale:
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1.7976931348623157E308 |
| typeKeywords:
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["Data","Service","Feature Service","ArcGIS Server","Feature Access","providerSDS"] |
| description:
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<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This dataset was developed for the 2015 Assessment of Forest and Rangelands. It is derived from </SPAN></P><P><SPAN>several data sources, including housing density (input_lsn_HousingDensity12_2), Fire Hazard </SPAN></P><P><SPAN>Severity Zones (FHSZ_Assessment11_1), Unimproved Parcels (input_UnimprovedParcels16_1), </SPAN></P><P><SPAN>and Vegetation Cover (input_FVEG15_2). The current dataset is appropriate for displaying the overall </SPAN></P><P><SPAN>pattern of WUI development at the county level, and comparing counties in terms of development patterns. </SPAN></P><P><SPAN>Until the dataset is refined through a field review process, it is not suited for WUI designations for individual </SPAN></P><P><SPAN>houses or neighborhoods. </SPAN></P><P><SPAN>Housing Density Classes used in the WUI definitions: </SPAN></P><P><SPAN> 1 - Less than one house per 20 acres</SPAN></P><P><SPAN> 2 - One house per 20 acres to one house per 5 acres</SPAN></P><P><SPAN> 3 - More than one house per 5 acres to 1 house per acre</SPAN></P><P><SPAN> 4 - More than 1 house per acre</SPAN></P><P><SPAN>Wildland Urban Interface is dense housing adjacent to vegetation that can burn in a wildfire and must meet </SPAN></P><P><SPAN> these criteria:</SPAN></P><P><SPAN> •Housing density class 2, 3 or 4 </SPAN></P><P><SPAN> •In moderate, high, or very high Fire Hazard Severity Zone</SPAN></P><P><SPAN> •Not dominated by wildland vegetation (i.e., lifeform not herbaceous, hardwood, conifer or shrub)</SPAN></P><P><SPAN> •Spatially contiguous groups of 30m cells that are10 acres and larger</SPAN></P><P><SPAN>Wildland Urban Intermix is housing development interspersed in an area dominated by wildland </SPAN></P><P><SPAN> vegetation subject to wildfire and must meet these criteria:</SPAN></P><P><SPAN> •Not Interface</SPAN></P><P><SPAN> •Housing density class 2</SPAN></P><P><SPAN> •Housing density class 3, 4 dominated by wildland vegetation</SPAN></P><P><SPAN> •In Moderate, High or Very High Fire Hazard Severity Zone</SPAN></P><P><SPAN> •Improved parcels only</SPAN></P><P><SPAN> •Spatially contiguous groups of 30m cells 25 acres and larger</SPAN></P><P><SPAN>Wildfire Influence Zone is wildfire susceptible vegetation up to 1.5 miles from Wildland Urban Interface or </SPAN></P><P><SPAN> Wildland Urban Intermix and must meet these criteria:</SPAN></P><P><SPAN> •Wildland vegetation up to 1.5 miles from Interface or Intermix</SPAN></P></DIV></DIV></DIV> |
| licenseInfo:
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| catalogPath:
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| title:
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Wildland Urban Interface Zone |
| type:
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Feature Service |
| url:
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| tags:
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["WUI","Fire","Urban","Wildland"] |
| culture:
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en-US |
| name:
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Wildland_Urban_Interface_Zone |
| guid:
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C37BF6C8-18F1-4D55-8FAE-F0877A970835 |
| minScale:
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0 |
| spatialReference:
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NAD_1983_StatePlane_California_II_FIPS_0402_Feet |