| spot elevations, non-watershed area | |
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Data format: Shapefile File or table name: spot_02_400 Theme keywords: elevation, DTM, Planimetric, Control Points, Spot, Spot elevation |
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Abstract:
Spot elevation markers that are associated with the 10 ft contours produced during the 2002/2003 Orthophotography Project. The area covered by this data is referred to as the Non-watershed Area because it lies outside the Napa River Watershed. This is roughly the eastern half of the county.
The spot elevations were mapped at a scale of 1"=400ft and meet National Map Accuracy standards at this scale. They are based on imagery acquired on April 22 & 23, 2002 and were generated photogrammetrically. |
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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.
Spot elevation markers that are associated with the 10 ft contours produced during the 2002/2003 Orthophotography Project. The area covered by this data is referred to as the Non-watershed Area because it lies outside the Napa River Watershed. This is roughly the eastern half of the county. The spot elevations were mapped at a scale of 1"=400ft and meet National Map Accuracy standards at this scale. They are based on imagery acquired on April 22 & 23, 2002 and were generated photogrammetrically.
The Spot Elevation layer is part of the basemap data layers used by the County of Napa. These layers are used for basic applications such as viewing, querying, and map output production. More advanced user applications may focus on planning, public works, spatial analysis, and presentation output.
Data was originally delivered in 12,000 ft x 12,000 ft tiles. These tiles were merged together using the geoprocessing tools in ArcView 8.3. The output shapefile was then loaded into ArcSDE. The vertical datum for the contours is NAVD88.
ground condition
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.
650 Imperial Way, Suite 201
Data loaded to ArcSDE.
Dataset copied.
Dataset copied.
Internal feature number.
ESRI
Elevation above sea level, in feet, for the highest point of the feature.
spot type definition
Feature geometry.
ESRI
Feature geometry.
ESRI
650 Imperial Way #201
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.
All available layers are located in the Data Catalog on the website http://gis.napa.ca.gov/gisdata.asp. You can download the available layers by Registering, then returning to the site to download.
Go to website http://gis.napa.ca.gov/gisdata.asp to request CD by mail for an additional fee.
650 Imperial Way #201