GIS Library Contents - Metadata
Developed Imperviousness Descriptor-NLCD 2016 (Raster)
This metadata information is subject to our disclaimer. Metadata information presented here is maintained manually. Therefore, date-sensitive fields such as feature count and date of last update may not be up-to-date. All metadata is subject to errors inherent in a manual process.
|Descriptive name||Developed Imperviousness Descriptor-NLCD 2016 (Raster)|
|Spatial domain||Pima Cnty & Vicinity|
|Abstract||National Land Cover Database 2016 Developed Imperviousness Descriptor, produced by MRLC (Multi-Resolution Land Characteristics) Consortium. NLCD imperviousness products represent urban impervious surfaces as a percentage of developed surface over every 30-meter pixel in the United States. NLCD 2016 updates all previously released versions of impervious products for CONUS (NLCD 2001, NLCD 2006, NLCD 2011) along with a new date of impervious surface for 2016. New for NLCD 2016 is an impervious surface descriptor layer. This descriptor layer identifies types of roads, core urban areas, and energy production sites for each impervious pixel to allow deeper analysis of developed features.|
Full metadata are included in the nlcd16id.img.xml file located in the same path as the maintenance format file.
-- See more information.
|Known errors/qualifications||1. Since new 2016 versions of NLCD products for all years have now been released, the decision was made to refrain from reprojecting this dataset into the County's standard NAD83 HARN projection. Since pixels were therefore not resampled, they do now represent the exact area on the ground that the original satellite sensor collected.|
|Field/value metadata||Field metadata|
|Source document or file name||NLCD_impervious_L48_20190405_full_zip.zip|
|Date of last data update|
(This date may not be current.)
|Last data update by||Erik Glenn|
|Date/time last touched - Meaning?||- The Enterprise GDB date was not found.|
|- The Shapefile date was not found.|
|See coverage files, if any, for date.|
|Lineage||20190619 -- Downloaded from MRLC (Multi-Resolution Land Characteristics) Consortium, clipped (EG).|
|Original conversion by||Erik Glenn|
|Pima County ITD GIS contact||Erik Glenn|
|Alternate Pima County ITD GIS contact|
|On Pima County Geospatial Data Portal?||No|