hillshade derived from 2002 ortho data, watershed area

Data format: SDE Raster Dataset

File or table name: hlshd_02_200

Theme keywords: elevation, imageryBaseMapsEarthCover

Abstract: Shaded relief (hillshade) view of the Watershed area of Napa County. The area covered by this data is referred to as the Watershed Area because it encompasses the Napa River Watershed. This is roughly the western half of the county. The Vertical coordinate system is: North American Vertical Datum of 1988. Altitude resolution 1.000000. Altitude distance units is feet.

FGDC and ESRI Metadata:

Metadata elements shown with blue text are defined in the Federal Geographic Data Committee's (FGDC) Content Standard for Digital Geospatial Metadata (CSDGM). Elements shown with green text are defined in the ESRI Profile of the CSDGM. Elements shown with a green asterisk (*) will be automatically updated by ArcCatalog. ArcCatalog adds hints indicating which FGDC elements are mandatory; these are shown with gray text.

Identification Information:

Citation information:
hillshade derived from 2002 ortho data, watershed area
*File or table name: hlshd_02_200

*Geospatial data presentation form: SDE raster digital data

Online linkage: http://gis.napa.ca.gov/giscatalog/catalog.asp

Shaded relief (hillshade) view of the Watershed area of Napa County. The area covered by this data is referred to as the Watershed Area because it encompasses the Napa River Watershed. This is roughly the western half of the county. 
The Vertical coordinate system is: North American Vertical Datum of 1988. Altitude resolution 1.000000. Altitude distance units is feet.

Hillshades are used as back drops for overlays. May be used with the HSV colouring scheme to get a shaded effect on a map.

Supplemental information:
The DTM data was mapped at a scale of 1" = 200 ft and meets National Map Accuracy standards at this scale. 
The DTM is based on imagery acquired on April 22 & 23, 2002 and LIDAR data acquired in May of 2003.
The vertical datum is NAVD88

*Language of dataset: en

Time period of content:
Time period information:
Single date/time:
Calendar date: REQUIRED: The year (and optionally month, or month and day) for which the data set corresponds to the ground.

Currentness reference:
REQUIRED: The basis on which the time period of content information is determined.

Progress: REQUIRED: The state of the data set.
Maintenance and update frequency: REQUIRED: The frequency with which changes and additions are made to the data set after the initial data set is completed.

Spatial domain:
Bounding coordinates:
*West bounding coordinate: -122.650040
*East bounding coordinate: -122.185263
*North bounding coordinate: 38.675843
*South bounding coordinate: 38.151093

Local bounding coordinates:
*Left bounding coordinate: 6376089.186967
*Right bounding coordinate: 6508389.186967
*Top bounding coordinate: 2008004.252926
*Bottom bounding coordinate: 1817504.252926

Theme keywords: elevation, imageryBaseMapsEarthCover
Theme keyword thesaurus: ISO 19115 Topic category

Place keywords: Napa, Napa County, California
Place keyword thesaurus: Geographic Names Information System

Access constraints: None. Data is available from County of Napa by registering at website: http://gis.napa.ca.gov/giscatalog/catalog.asp
Use constraints:
Disclaimer: This GIS data is intended to provide a visual display of data for the user's convenience. Users of this data are hereby notified that the appropriate public primary information sources should be consulted for verification of the information.  Although every reasonable effort has been made to assure the accuracy of this data, the County of Napa makes no warranty, representation or guaranty as to the content, sequence, accuracy, timeliness or completeness of any of the data provided herein and explicitly disclaims any representations and warranties, including, without limitation, the implied warranties of merchantability and fitness for a particular purpose. The County of Napa assumes no liability for any errors, omissions, or inaccuracies in the information provided regardless of how caused and assumes no liability for any decisions made or actions taken or not taken by the user of the data in reliance upon any information or data furnished hereunder. Because the GIS data provided is not warranted to be up-to-date, the user should check with the County staff for updated information.

*Native dataset format: SDE Raster Dataset
*Native data set environment:
Microsoft Windows 2000 Version 5.2 (Build 3790) Service Pack 2; ESRI ArcCatalog

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Data Quality Information:

Process step:
Process description:
This layer was created by building a TIN model using the mass point and breakline shapefiles with 3D Analyst. The TIN was then exported to ESRI grid format using ArcToolBox and linear interpolation. 3D Analyst was then used to convert the elevation grid to a hillshade grid.

Process date: 20020423

Process step:
Process description:
Converted download file to a file geodatabase containing a raster instead of an .e00 export file.

Process software and version: 20170119

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Spatial Data Organization Information:

*Direct spatial Rreference method: Raster

Raster object information:
*Image format: SDR
*Number of bands: 1

*Row count: 19050
*Column count: 13230
*Vertical count: 1

*Cell size X direction: 10.000000
*Cell size Y direction: 10.000000

*Bits per pixel: 16
*Pyramid layers: TRUE
*Image colormap: FALSE
*Compression type: LZ77

*Raster object type: Pixel
*Raster display type: pixel codes
*Raster origin: Upper Left

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Spatial Reference Information:

Horizontal coordinate system definition:
Coordinate system name:
*Projected coordinate system name: NAD_1983_StatePlane_California_II_FIPS_0402_Feet
*Geographic coordinate system name: GCS_North_American_1983

Planar coordinate information:
*Planar coordinate encoding method: row and column
Coordinate representation:
*Abscissa resolution: 10.000000
*Ordinate resolution: 10.000000
*Planar distance units: survey feet

Geodetic model:
*Horizontal datum name: North American Datum of 1983
*Ellipsoid name: Geodetic Reference System 80
*Semi-major axis: 6378137.000000
*Denominator of flattening ratio: 298.257222

Vertical coordinate system definition:
Altitude system definition:
Altitude datum name: North American Vertical Datum of 1988
*Altitude resolution: 1.000000
Altitude distance units: Feet
*Altitude encoding method: Explicit elevation coordinate included with horizontal coordinates

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Distribution Information:

Resource description: downloadable data

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Metadata Reference Information:

*Metadata date: 20110502

*Language of metadata: en

Metadata contact:
Contact information:
Contact organization primary:
Contact person: REQUIRED: The person responsible for the metadata information.
Contact organization: REQUIRED: The organization responsible for the metadata information.

Contact address:
Address type: REQUIRED: The mailing and/or physical address for the organization or individual.
City: REQUIRED: The city of the address.
State or province: REQUIRED: The state or province of the address.
Postal code: REQUIRED: The ZIP or other postal code of the address.

Contact voice telephone: REQUIRED: The telephone number by which individuals can speak to the organization or individual.

*Metadata standard name: FGDC Content Standards for Digital Geospatial Metadata
*Metadata standard version: FGDC-STD-001-1998
*Metadata time convention: local time

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Metadata stylesheets are provided courtesy of ESRI. Copyright (c) 2000-2002, Environmental Systems Research Institute, Inc. All rights reserved.