Data format: SDE Raster Dataset

File or table name: elev_02_400

Theme keywords: elevation, elevation

Abstract: Elevation grid of the Napa County Non Watershed Area. The DTM is based on imagery acquired on April 22 & 23, 2002. 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:
*File or table name: elev_02_400

*Geospatial data presentation form: SDE raster digital data

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

Elevation grid of the Napa County Non Watershed Area. The DTM is based on imagery acquired on April 22 & 23, 2002. The Vertical coordinate system is: North American Vertical Datum of 1988. Altitude resolution 1.000000. Altitude distance units is feet.

To show elevation of the Non Watershed area of Napa County

Supplemental information:
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.

*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: -122.622405
*East bounding coordinate: -122.058588
*North bounding coordinate: 38.867153
*South bounding coordinate: 38.311875

Local bounding coordinates:
*Left bounding coordinate: 6384455.831240
*Right bounding coordinate: 6544855.831240
*Top bounding coordinate: 2077626.884904
*Bottom bounding coordinate: 1876001.884904

Theme keywords: elevation, elevation

Place keywords: Napa County, Napa, St. Helena, Yountville, Calistoga, American Canyon, 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 XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog

Back to Top
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.
A 10 foot cell size was used for this layer.

Process date: 20040127

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

Process date: 20170119

Back to Top
Spatial Data Organization Information:

*Direct spatial Rreference method: Raster

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

*Row count: 8065
*Column count: 6416
*Vertical count: 1

*Cell size X direction: 25.000000
*Cell size Y direction: 25.000000

*Bits per pixel: 32
*Pyramid layers: TRUE
*Image colormap: FALSE
*Compression type: LZ77

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

Back to Top
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: 25.000000
*Ordinate resolution: 25.000000
*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

Back to Top
Distribution Information:

Resource description: downloadable data

Back to Top
Metadata Reference Information:

*Metadata date: 20110217

*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

Back to Top

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