elevation derived from 2007 ortho data.

Data format: SDE Raster Dataset

File or table name: elev_2007

Theme keywords: elevation, imageryBaseMapsEarthCover, Topography, Elevation, Digital Elevation Model, DEM

Abstract: Elevation grid of the Napa County Watershed Area. This data is derived from the Digital Terrain Model files produced during the 2002/2003 Orthophotography Project which was resampled for the 2007 Project. Originally these points were created in two scales - the Napa Watershed was 1" = 200ft and the remainder of the County was 1" = 400ft. For the 2007 Project the 400ft scaled points were re-sampled to the 200ft scale. Addionally, updates were made where applicable to any of the data.

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:
Citation information:
Originators: Mapcon Mapping Inc.; Kevin Woolf, Project Manager


Title:
elevation derived from 2007 ortho data.
*File or table name: elev_2007


Publication date: 20080215
*Geospatial data presentation form: SDE raster digital data


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


Description:
Abstract:
Elevation grid of the Napa County Watershed Area.  This data is derived from the Digital Terrain Model files produced during the 2002/2003 Orthophotography Project which was resampled for the 2007 Project.  Originally these points were created in two scales - the Napa Watershed was 1" = 200ft and the remainder of the County was 1" = 400ft.  For the 2007 Project the 400ft scaled points were re-sampled to the 200ft scale.  Addionally, updates were made where applicable to any of the data.

Purpose:
This coverage was created to assist in creating elevation derived data to assis the County of Napa in the management and analysis of this area.

*Language of dataset: en


Time period of content:
Time period information:
Single date/time:
Calendar date: 20080215

Currentness reference:
ground condition

Status:
Progress: Complete
Maintenance and update frequency: None planned

Spatial domain:
Bounding coordinates:
*West bounding coordinate: -122.649028
*East bounding coordinate: -122.061262
*North bounding coordinate: 38.864955
*South bounding coordinate: 38.152626

Local bounding coordinates:
*Left bounding coordinate: 6376869.606020
*Right bounding coordinate: 6544049.606020
*Top bounding coordinate: 2076827.121896
*Bottom bounding coordinate: 1818057.121896

Keywords:
Theme:
Theme keywords: elevation, imageryBaseMapsEarthCover
Theme keyword thesaurus: ISO Topic Category

Theme:
Theme keywords: Topography, Elevation, Digital Elevation Model, DEM
Theme keyword thesaurus: none

Place:
Place keywords: Napa, Napa County, California
Place keyword thesaurus: none

Access constraints: Access to this data is limited to County of Napa and partner agencies only. Data is not available for download yet.
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.

Point of contact:
Contact information:
Contact organization primary:
Contact organization: County of Napa ITS Department
Contact position: GIS Coordinator


Contact address:
Address type: mailing and physical address
Address:
650 Imperial Way, Suite 201
City: Napa
State or province: CA
Postal code: 94559
Country: USA

Contact voice telephone: (707) 259-8141
Contact facsimile telephone: (707) 253-4824


Contact electronic mail address: gisstaff@co.napa.ca.us


Hours of service: M-F 8:00 am - 5:00 pm



*Native dataset format: SDE Raster Dataset
*Native data set environment:
Microsoft Windows 2000 Version 5.2 (Build 3790) Service Pack 2; ESRI ArcCatalog 9.3.1.3000


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Data Quality Information:


Lineage:
Source information:
Source scale denominator: 2400
Type of source media: DMC-Digital Camera
Source citation abbreviation:
Mapcon Mapping Inc.
Source contribution:
Aerial photography acquired for the Napa County 2007 Orthophotography Project.

Process step:
Process description:
This layer was built by creating a Natural Neighbor grid derived from mass point shapefiles in 3D Analyst.

Process date: 20080215


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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: 25877
*Column count: 16718
*Vertical count: 1


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


*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


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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:
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 resolution: 1.000000
*Altitude encoding method: Explicit elevation coordinate included with horizontal coordinates

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Entity and Attribute Information:


Detailed description:
Entity type:
Entity type label: elevation 2007
Entity type definition:
Elevation derived from 2007 Ortho Project.
Entity type definition source:
Dataset developer

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Distribution Information:


Distributor:
Contact information:
Contact organization primary:
Contact organization: County of Napa ITS Department
Contact position: GIS Coordinator


Contact address:
Address type: mailing and physical address
Address:
650 Imperial Way, Suite 201
City: Napa
State or province: CA
Postal code: 94559
Country: USA

Contact voice telephone: (707) 259-8141
Contact facsimile telephone: (707) 253-4824


Contact electronic mail address: gisstaff@co.napa.ca.us


Hours of service: M-F 8:00 am - 5:00 pm



Resource description: downloadable data


Distribution liability:
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.

Custom order process:
Go to website http://gis.napa.ca.gov/gisdata.asp. to request CD by mail for an additional fee.


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Metadata Reference Information:


*Metadata date: 20110502


*Language of metadata: en


Metadata contact:
Contact information:
Contact organization primary:
Contact organization: County of Napa ITS Department
Contact position: GIS Coordinator


Contact address:
Address type: mailing and physical address
Address:
650 Imperial Way, Suite 201
City: Napa
State or province: CA
Postal code: 94559
Country: USA

Contact voice telephone: (707) 259-8141
Contact facsimile telephone: (707) 253-4824


Contact electronic mail address: gisstaff@co.napa.ca.us


Hours of service: M-F 8:00 am - 5:00 pm



*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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