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This dataset was developed for the 2015 Assessment of Forest and Rangelands. It is derived from <\/SPAN><\/P>

several data sources, including housing density (input_lsn_HousingDensity12_2), Fire Hazard <\/SPAN><\/P>

Severity Zones (FHSZ_Assessment11_1), Unimproved Parcels (input_UnimprovedParcels16_1), <\/SPAN><\/P>

and Vegetation Cover (input_FVEG15_2). The current dataset is appropriate for displaying the overall <\/SPAN><\/P>

pattern of WUI development at the county level, and comparing counties in terms of development patterns. <\/SPAN><\/P>

Until the dataset is refined through a field review process, it is not suited for WUI designations for individual <\/SPAN><\/P>

houses or neighborhoods. <\/SPAN><\/P>

Housing Density Classes used in the WUI definitions: <\/SPAN><\/P>

1 - Less than one house per 20 acres<\/SPAN><\/P>

2 - One house per 20 acres to one house per 5 acres<\/SPAN><\/P>

3 - More than one house per 5 acres to 1 house per acre<\/SPAN><\/P>

4 - More than 1 house per acre<\/SPAN><\/P>

Wildland Urban Interface is dense housing adjacent to vegetation that can burn in a wildfire and must meet <\/SPAN><\/P>

these criteria:<\/SPAN><\/P>

\u2022Housing density class 2, 3 or 4 <\/SPAN><\/P>

\u2022In moderate, high, or very high Fire Hazard Severity Zone<\/SPAN><\/P>

\u2022Not dominated by wildland vegetation (i.e., lifeform not herbaceous, hardwood, conifer or shrub)<\/SPAN><\/P>

\u2022Spatially contiguous groups of 30m cells that are10 acres and larger<\/SPAN><\/P>

Wildland Urban Intermix is housing development interspersed in an area dominated by wildland <\/SPAN><\/P>

vegetation subject to wildfire and must meet these criteria:<\/SPAN><\/P>

\u2022Not Interface<\/SPAN><\/P>

\u2022Housing density class 2<\/SPAN><\/P>

\u2022Housing density class 3, 4 dominated by wildland vegetation<\/SPAN><\/P>

\u2022In Moderate, High or Very High Fire Hazard Severity Zone<\/SPAN><\/P>

\u2022Improved parcels only<\/SPAN><\/P>

\u2022Spatially contiguous groups of 30m cells 25 acres and larger<\/SPAN><\/P>

Wildfire Influence Zone is wildfire susceptible vegetation up to 1.5 miles from Wildland Urban Interface or <\/SPAN><\/P>

Wildland Urban Intermix and must meet these criteria:<\/SPAN><\/P>

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