| [THEME]_[EXTENT].tif |
\Data\[EXTENT] |
Georeferenced TIFF files are provided for the each of the following spatial extents: continental U.S., the District of Columbia, and each U.S. state ([EXTENT] = CONUS for continental U.S., DC for District of Columbia, AB for Alabama, AK for Alaska, AZ for Arizona, AK for Arkansas, CA for California, ..., WI for Wisconsin, and WY for Wyoming). For each extent there are ten different raster datasets:
1. BuildingCount_[EXTENT].tif: Continuous integer values representing the count of buildings located within each 30-meter (m) pixel. Values for the U.S. are between 0 and 50.
2. BuildingDensity_[EXTENT].tif: Continuous integer values representing the density of buildings in within each 30-m pixel (buildings per square kilometer [km²]). Values for the U.S. are between 0 and 8,054.
3. BuildingCover_[EXTENT].tif: Continuous integer values representing the percentage of habitable land area covered by buildings in each 30-m pixel. Values for the U.S. are between 0 and 100.
4. PopCount_[EXTENT].tif: Continuous floating point values representing residential population count (persons) in each 30-m pixel. Values for the U.S. are between 0 and 7,571.
5. PopDen_[EXTENT].tif: Continuous integer values representing the residential population density (people/km²) in each 30-m pixel. Values for the U.S. are between 0 and 109,512.
6. HUCount_[EXTENT].tif: Continuous floating point values representing the number of housing units in each 30-m pixel. Values for the U.S. are between 0 and 3,030.4.
7. HUDen_[EXTENT].tif: Continuous integer values representing housing-unit density in each 30-m pixel (housing units/km²). Values for the U.S. are between 0 and 62,264.
8. HUExposure_[EXTENT].tif: Continuous floating point values representing the expected number of housing units within a 30-m pixel potentially exposed to wildfire in a year. This is a long-term annual average and not intended to represent the actual number of housing units exposed in any specific year. Values for the U.S. are between 0 and 0.13.
9. HUImpact_[EXTENT].tif: Continuous integer values representing the relative potential impact of fire to housing units at any 30-m pixel, if a fire were to occur. It is a unitless index that incorporates the general consequences of fire on a home as a function of fire intensity. Values for the U.S. are between 0 and 1,952,625,152.
10. HURisk_[EXTENT].tif: Continuous integer values of a unitless index that represents all four primary elements of wildfire risk - likelihood, intensity, susceptibility, and exposure - on 30-m pixels where housing unit density is greater than zero. Values for the U.S. are between 0 and 7,556,012.
(Associated OVR files are included, and contain pyramids that allow the raster datasets to draw more quickly in GIS software. Associated XML files contain dataset-specific FGDC-CSDGM metadata containing a description of the content, quality, and other characteristics of the data.) |