GIS Library Contents - Metadata Low Elevation Valley Floors Special Element

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Descriptive name		Low Elevation Valley Floors Special Element
File name		vfloor
Spatial domain		Pima County
Abstract		Vfloor displays "low elevation" valley floors as those areas that are less than 2500 feet above mean sea level and on 1% slope or less.
Known errors/qualifications		Created from 30-meter DEM. Slope grid also created from 30-meter DEM. Grid-code of 1 indicates area is inside the low elevation valley floors while -9999 indicates area is not inside low elevation valley floors.
Feature type		polygon
Feature count		202,393
Thumbnail Map		vfloor.pdf    (13,588,094 bytes, PDF created 07/21/2022 )
Projection		NAD83 HPGN (Parameters)
Rectification		n/a
Field/value metadata		Field metadata
Source organization		USGS - NED
Source contact
Source document or file name		dem30_hpgn
Source date		20000801
Source scale
Source format		Unknown
Second source name		PC DOT GIS Division
Second source contact		William Tanksley
Second source document or file name		levf_pc (Arc/Info GRID)
Second source date		20020227
Second source scale
Second source format		Grid
Date of last data update (This date may not be current.)		20020227
Last data update by		unknown
Date/time last touched - Meaning?		2021-04-05  11:50 PM - Enterprise GDB
		2021-04-05  11:51 PM - Shapefile - Library input format
		See coverage files, if any, for date.
Lineage		Reselected dem30_hpgn for elevation <= 2500 ft. Created slope grid from dem30_hpgn. Added two grids together and made resulting grid into an integer grid. Converted grid to polygon.
On maintenance?		No
Maintenance organization
Maintenance description
Original conversion by		USGS
Pima County ITD GIS contact		John Regan
Alternate Pima County ITD GIS contact
On  Pima County Geospatial Data Portal?		No

 GIS Library Data Layer Metadata