major basins

Theme keywords: inlandWaters, Drainage Boundaries, Water, Hydrography, Watersheds, Drainages
Abstract: The Napa County Watersheds were generated from two elevation datasets. The Napa River Watershed was generated from LIDAR data processed by NCALM at UC Berkeley (http://calm.geo.berkeley.edu/ncalm/index.html). The eastern side of the county was delineated from DTM data which was generated from aerial photography (2002). The watersheds are intended to be used for hydrologic modeling and planning.

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: Jones & Stokes


Title:
major basins


Publication date: 20050501
Geospatial data presentation form: vector digital data


Online linkage: http://gis.napa.ca.gov/gisdata.asp


Description:
Abstract:
The Napa County Watersheds were generated from two elevation datasets.  The Napa River Watershed was generated from LIDAR data processed by NCALM at UC Berkeley (http://calm.geo.berkeley.edu/ncalm/index.html).  The eastern side of the county was delineated from DTM data which was generated from aerial photography (2002).  The watersheds are intended to be used for hydrologic modeling and planning.

Purpose:
The watershed database was designed to be used for hydrologic modeling and to provide a base watershed map for future planning and analysis.  The data was generated using the best available elevation data available in 2004.

Time period of content:
Time period information:
Single date/time:
Calendar date: 20050501

Currentness reference:
publication date

Status:
Progress: In work
Maintenance and update frequency: As needed

Spatial domain:
Bounding coordinates:
West bounding coordinate: -122.648961
East bounding coordinate: -122.061188
North bounding coordinate: 38.864112
South bounding coordinate: 38.144157

Keywords:
Theme:
Theme keywords: inlandWaters
Theme keyword thesaurus: ISO 19915 Topic Category

Theme:
Theme keywords: Drainage Boundaries, Water, Hydrography, Watersheds, Drainages
Theme keyword thesaurus: none

Place:
Place keywords: Napa County, Napa, 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. This data is made available under the Public Domain Dedication and License version v1.0 whose full text can be found at: http://opendatacommons.org/licenses/pddl/1.0/
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 person: Patrick Kowta
Contact organization: County of Napa Information Technology Services
Contact position: GIO


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


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:
Process step:
Process description:
Napa River Watershed: The watersheds were generated from LIDAR data at a 10 foot cell size.  Pour points were provided by the county and used to generate the watersheds.  A primary set of streamlines was provided by NCALM and additional ditches, culverts etc were provided by the County.  The streamlines, culverts etc were "burned" into the elevation dataset to create a hydrologically correct dataset.  This was needed because the LIDAR data picked up roadways, railroads and other features that needed to be modified in order for watersheds to be created.

The eastern watersheds (Berryessa): were generated from a DTM at a 25 foot cell size.  Pour points were provided by the county.

Process date: 20050501


Process step:
Process description:
Dataset imported to SDE using County X.Y and Domain standard values

Process date: 20060601


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Spatial Data Organization Information:


Direct spatial Rreference method: Vector


Point and vector object information:
ESRI terms description:
*Name: major_basins
*ESRI feature type: Simple
*ESRI feature geometry:
*ESRI topology: FALSE
*ESRI feature count: 4
*Spatial index: TRUE
*Linear referencing: FALSE


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Spatial Reference Information:


Horizontal coordinate system definition:
Planar:
Planar coordinate information:
Planar coordinate encoding method: coordinate pair
Coordinate representation:
Abscissa resolution: 0.000625
Ordinate resolution: 0.000625
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:
*Name: major_basins


Entity type:
Entity type label: major_basins
*Entity type type: Feature Class
*Entity type count: 4

Attribute:
Attribute label: OBJECTID
*Attribute alias: OBJECTID
Attribute definition:
Internal feature number.
Attribute definition source:
ESRI

*Attribute type: OID
*Attribute width: 4
*Attribute precision: 10
*Attribute scale: 0


Attribute domain values:
Unrepresentable domain:
Sequential unique whole numbers that are automatically generated.


Attribute:
Attribute label: BASIN
*Attribute alias: BASIN


*Attribute type: String
*Attribute width: 50
*Attribute precision: 0
*Attribute scale: 0


Attribute:
Attribute label: ACRES
*Attribute alias: ACRES


*Attribute type: Double
*Attribute width: 8
*Attribute precision: 16
*Attribute scale: 5


Attribute:
Attribute label: SHAPE
*Attribute alias: Shape
Attribute definition:
Feature geometry.
Attribute definition source:
ESRI

*Attribute type: Geometry
*Attribute width: 4
*Attribute precision: 0
*Attribute scale: 0


Attribute domain values:
Unrepresentable domain:
Coordinates defining the features.


Attribute:
Attribute label: SHAPE.STArea()
*Attribute alias: SHAPE.STArea()


*Attribute type: Double
*Attribute width: 0
*Attribute precision: 0
*Attribute scale: 0


Attribute:
Attribute label: SHAPE.STLength()
*Attribute alias: SHAPE.STLength()


*Attribute type: Double
*Attribute width: 0
*Attribute precision: 0
*Attribute scale: 0


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Distribution Information:


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.

Standard order process:
Fees: none for digital form
Ordering instructions:
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.


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: 20110404


Metadata contact:
Contact information:
Contact organization primary:
Contact organization: Jones & Stokes
Contact position: GIS Manager


Contact address:
Address type: mailing and physical address
Address:
2600 V Street
City: Sacramento
State or province: CA
Postal code: 95818
Country: USA

Contact voice telephone: 916-737-3000
Contact facsimile telephone: 916-737-3030


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.