Southern California Canals

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator:

U.S. Department of Commerce U.S. Census Bureau Geography Division

Publication_Date: 2002

Title: Southern California Canals

Edition: UA Census 2000

Geospatial_Data_Presentation_Form: vector digital data

Series_Information:

Series_Name: TIGER/Line Files

Issue_Identification:

Version (MMYY) represents the month and year file created

Publication_Information:

Publication_Place: Washington, DC

Publisher:

U.S. Department of Commerce U.S. Census Bureau Geography Division

Online_Linkage:

http://www.institute.redlands.edu/salton/downloads/shapefiles/ss_canals.zip

Description:

Abstract:

Dataset of canals in the Salton Basin pulled from TIGER Line files.

Purpose:

In order for others to use the information in the Census TIGER database in a geographic information system (GIS) or for other geographic applications, the Census Bureau releases to the public extracts of the database in the form of TIGER/Line files. Various versions of the TIGER/Line files have been released; previous versions include the 1990 Census TIGER/Line files, the 1992 TIGER/Line files, the 1994 TIGER/Line files, the 1995 TIGER/Line files, the 1997 TIGER/Line files, the 1998 TIGER/Line files, the 1999 TIGER/Line files, the Redistricting Census 2000 TIGER/Line files, and the Census 2000 TIGER/Line files.

Supplemental_Information:

To find out more about TIGER/Line files and other Census TIGER database derived data sets visit <http://www.census.gov/geo/www/tiger>.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2000

Currentness_Reference: 2000

Status:

Progress: Complete

Maintenance_and_Update_Frequency:

TIGER/Line files are extracted from the Census TIGER database when needed for geographic programs required to support the census and survey programs of the U.S. Census Bureau. No changes or updates will be made to the UA Census 2000 TIGER/Line files. Future releases of TIGER/Line files will reflect updates made to the Census TIGER database and will be released under a version numbering system based on the month and year the data is extracted.

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -117.595319

East_Bounding_Coordinate: -114.158049

North_Bounding_Coordinate: 34.360340

South_Bounding_Coordinate: 32.654245

Keywords:

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: Line Feature

Theme_Keyword: Feature Identifier

Theme_Keyword: Census Feature Class Code (CFCC)

Theme_Keyword: Geographic Entity

Theme_Keyword: Point/Node

Theme_Keyword: Landmark Feature

Theme_Keyword: TIGER/Line

Theme_Keyword: Topology

Theme_Keyword: Latitude/Longitude

Theme_Keyword: Vector

Theme_Keyword: TIGER/Line Identification Number (TLID)

Place:

Place_Keyword_Thesaurus:

FIPS Publication 6-4 FIPS Publication 55

Place_Keyword: United States

Place_Keyword: County

Access_Constraints: None

Use_Constraints:

None. Acknowledgment of the U.S. Census Bureau would be appreciated for products derived from these files. TIGER, TIGER/Line, and Census TIGER are registered trademarks of the U.S. Census Bureau. ZCTA is a trademark of the U.S. Census Bureau.

Browse_Graphic:

Browse_Graphic_File_Name: None

Security_Information:

Security_Classification_System: None

Security_Classification: Unclassified

Security_Handling_Description: None

Native_Data_Set_Environment:

Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.780

Cross_Reference:

Citation_Information:

Title: None

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

Accurate against Federal information Processing Standards (FIPS), FIPS Publication 6-4, and FIPS-55 at the 100% level for the codes and base names. The remaining attribute information has been examined but has not been fully tested for accuracy.

Logical_Consistency_Report:

The feature network of lines (as represented by Record Types 1 and 2) is complete for census purposes. Spatial objects in TIGER/Line belong to the "Geometry and Topology" (GT) class of objects in the "Spatial Data Transfer Standard" (SDTS) FIPS Publication 173 and are topologically valid. Node/geometry and topology (GT)-polygon/chain relationships are collected or generated to satisfy topological edit requirements. These requirements include: * Complete chains must begin and end at nodes. * Complete chains must connect to each other at nodes. * Complete chains do not extend through nodes. * Left and right GT-polygons are defined for each complete chain element and are consistent throughout the extract process. * The chains representing the limits of the files are free of gaps. The Census Bureau performed automated tests to ensure logical consistency and limits of files. All polygons are tested for closure. The Census Bureau uses its internally developed Geographic Update System to enhance and modify spatial and attribute data in the Census TIGER database. Standard geographic codes, such as FIPS codes for states, counties, municipalities, and places, are used when encoding spatial entities. The Census Bureau performed spatial data tests for logical consistency of the codes during the compilation of the original Census TIGER database files. Most of the Codes themselves were provided to the Census Bureau by the USGS, the agency responsible for maintaining FIPS 55. Feature attribute information has been examined but has not been fully tested for consistency.

Completeness_Report:

Data completeness of the TIGER/Line files reflects the contents of the Census TIGER database at the time the TIGER/Line files (UA Census 2000 version) were created.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

The information present in these files is provided for the purposes of statistical analysis and census operations only. Coordinates in the TIGER/Line files have six implied decimal places, but the positional accuracy of these coordinates is not as great as the six decimal places suggest. The positional accuracy varies with the source materials used, but generally the information is no better than the established national map Accuracy standards for 1:100,000-scale maps from the U.S. Geological Survey (USGS); thus it is NOT suitable for high-precision measurement applications such as engineering problems, property transfers, or other uses that might require highly accurate measurements of the earth's surface. The USGS 1:100,000-scale maps met national map accuracy standards and use coordinates defined by the North American Datum, 1983. For the contiguous 48 States, the cartographic fidelity of most of the UA Census 2000 TIGER/Line files, in areas outside the 1980 census Geographic Base File/Dual Independent map Encoding (GBF/DIME) file coverage and selected other large metropolitan areas, compare favorably with the USGS 1:100,000-scale maps. The Census Bureau cannot specify the accuracy of features inside of what was the 1980 GBF/DIME-File coverage or selected metropolitan areas. The Census Bureau added updates to the TIGER/Line files that enumerators annotated on maps sheets prepared from the Census TIGER database as they attempted to traverse every street feature shown on the Census 2000 map sheets; the Census Bureau also made other corrections from updated map sheets supplied by local participants for Census Bureau programs. The locational accuracy of these updates is of unknown quality. In addition to the Federal, State, and local sources, portions of the files may contain information obtained in part from maps and other materials prepared by private companies. Despite the fact the TIGER/Line data positional accuracy is not as high as the coordinate values imply, the six- decimal place precision is useful when producing maps. The precision allows features that are next to each other on the ground to be placed in the correct position, on the map, relative to each other, without overlap.

Quantitative_Horizontal_Positional_Accuracy_Assessment:

Horizontal_Positional_Accuracy_Value: +/- 160 feet

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator:

U.S. Department of Commerce U.S. Census Bureau Geography Division

Publication_Date: Unpublished material

Title: Census TIGER database

Edition: UA Census 2000

Source_Scale_Denominator: 100,000

Type_of_Source_Media: On line

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2000

Source_Currentness_Reference:

Date the file was made available to create TIGER/Line File extracts.

Source_Citation_Abbreviation: TIGER

Source_Contribution:

Selected geographic and cartographic information (line segments) from the Census TIGER database.

Process_Step:

Process_Description:

In order for others to use the information in the Census TIGER database in a GIS or for other geographic applications, the Census Bureau releases periodic extracts of selected information from the Census TIGER database, organized as topologically consistent networks. Software (TIGER DB routines) written by the Geography Division allows for efficient access to Census TIGER system data. TIGER/Line files are extracted from the Census TIGER database by county or statistical equivalent area. Census TIGER data for a given county or statistical equivalent area is then distributed among 17 fixed length record ASCII files, each one containing attributes for either line, polygon, or landmark geographic data types. The Census Bureau has released various versions of the TIGER/Line files since 1988, with each version having more updates (feature and feature names, address ranges and ZIP Codes, coordinate updates, revised field definitions, etc.) than the previous version.

Source_Used_Citation_Abbreviation: Census TIGER database

Process_Date: 2000

Process_Step:

Process_Description:

Data downloaded by Redlands Institute, University of Redlands staff from online linkage. Unzipped and imported, if necessary. Projection checked against project standards and reprojected if needed. Topology and attributes QC'd. Dataset clipped to Southern California.

Source_Used_Citation_Abbreviation: C:\DOCUME~1\Lewis\LOCALS~1\Temp\xml1CC.tmp

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Lewis, Lisa

Contact_Organization: Redlands Institute, University of Redlands

Contact_Address:

Address_Type: mailing and physical address

Address: 1200 E. Colton Ave.

City: Redlands

State_or_Province: CA

Postal_Code: 92373

Country: USA

Contact_Voice_Telephone: 909-335-5268

Contact_Facsimile_Telephone: 909-307-6952

Process_Step:

Process_Description: Dataset copied.

Source_Used_Citation_Abbreviation:

Cloud_Cover: N/A

Spatial_Data_Organization_Information:

Indirect_Spatial_Reference:

Federal Information Processing Standards (FIPS) and feature names and addresses.

Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: String

Point_and_Vector_Object_Count: 1570

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Point

Point_and_Vector_Object_Count: 20

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Composite object

Point_and_Vector_Object_Count: 1289

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains

Point_and_Vector_Object_Count: 290 to 33,000

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.000000

Longitude_Resolution: 0.000000

Geographic_Coordinate_Units: Decimal degrees

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

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: ss_canals

Attribute:

Attribute_Label: FNODE_

Attribute:

Attribute_Label: Shape

Attribute_Definition: Feature geometry.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

Attribute:

Attribute_Label: FID

Attribute_Definition: Internal feature number.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain:

Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute_Label: LENGTH

Attribute_Definition: Length of feature in internal units.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Positive real numbers that are automatically generated.

Attribute:

Attribute_Label: FEATNAME

Attribute:

Attribute_Label: CLASS

Attribute:

Attribute_Label: CFCC_CLASS

Attribute:

Attribute_Label: TNODE_

Attribute:

Attribute_Label: CFCC

Attribute:

Attribute_Label: LPOLY_

Attribute:

Attribute_Label: FEATTYPE

Attribute:

Attribute_Label: RPOLY_

Attribute:

Attribute_Label: ATLAS_CANA

Attribute:

Attribute_Label: ATLAS_CA_1

Attribute:

Attribute_Label: CFCC_CLA_1

Detailed_Description:

Entity_Type:

Entity_Type_Label: atlas_canal.ratname

Attribute:

Attribute_Label: FID

Attribute_Definition: Internal feature number.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain:

Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute_Label: Shape

Attribute_Definition: Feature geometry.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

Attribute:

Attribute_Label: NAME#

Attribute_Definition: Internal feature number.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain:

Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute_Label: NAME-ID

Attribute_Definition: User-defined feature number.

Attribute_Definition_Source: ESRI

Attribute:

Attribute_Label: FEATNAME

Attribute:

Overview_Description:

Entity_and_Attribute_Overview:

The TIGER/Line files contain data describing three major types of features/entities; Line Features - 1) Roads 2) Railroads 3) Hydrography 4) Miscellaneous transportation features and selected power lines and pipe lines 5) Political and statistical boundaries Landmark Features - 1) Point landmarks, e.g., schools and churches. 2) Area landmarks, e.g., Parks and cemeteries. 3) Key geographic locations (KGLs), e.g., shopping centers and factories. Polygon features - 1) Geographic entity codes for areas used to tabulate the Census 2000 census statistical data and 1990 geographic areas 2) Locations of area landmarks 3) Locations of KGLs The line features and polygon information form the majority of data in the TIGER/Line files. Some of the data/attributes describing the lines include coordinates, feature identifiers (names), CFCCs (used to identify the most noticeable characteristic of a feature), address ranges, and geographic entity codes. The TIGER/Line files contain point and area labels that describe landmark features and provide locational reference. Area landmarks consist of a feature name or label and feature type assigned to a polygon or group of polygons. Landmarks may overlap or refer to the same set of polygons. The Census TIGER database uses collections of spatial objects (points, lines, and polygons) to model or describe real-world geography. The Census Bureau uses these spatial objects to represent features such as streets, rivers, and political boundaries and assigns attributes to these features to identify and describe specific features such as the 500 block of Market Street in Philadelphia, Pennsylvania.

Entity_and_Attribute_Detail_Citation:

U.S. Census Bureau, TIGER/Line files, UA Census 2000 Technical Documentation. The TIGER/Line documentation defines the terms and definitions used within the files.

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

U.S. Department of Commerce U.S. Census Bureau Geography Division Products and Services Staff

Contact_Address:

Address_Type: Physical address

Address: 8903 Presidential Parkway, Room 303 WP I

City: Upper Marlboro

State_or_Province: Maryland

Postal_Code: 20772

Contact_Address:

Address_Type: Mailing address

Address: 4700 Silver Hill Road, Stop 7400

City: Washington

State_or_Province: District of Columbia

Postal_Code: 20233-7400

Contact_Voice_Telephone: (301) 457-1128

Contact_Voice_Telephone: (301) 457-1128

Contact_Facsimile_Telephone:

(301) 457-4710 Contact_Electronic _Mail_Address: tiger@census.gov

Resource_Description: UA Census 2000 TIGER/Line Files

Distribution_Liability:

No warranty, expressed or implied is made and no liability is assumed by the U.S. Government in general or the U.S. Census Bureau in specific as to the positional or attribute accuracy of the data. The act of distribution shall not constitute any such warranty and no responsibility is assumed by the U.S. Government in the use of these files.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: TGRLN (compressed)

Format_Version_Number: UA Census 2000

File_Decompression_Technique: PK-ZIP, version 1.93A or higher

Transfer_Size: 0.357

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: www.census.gov/geo/www/tiger

Fees:

The online copy of the TIGER/Line files may be accessed without charge. See <http://www.census.gov/geo/www/tiger> for information on availability on CD-ROM/DVD and associated costs for these products.

Ordering_Instructions:

To obtain more information about ordering TIGER/Line files visit <http://www.census.gov/geo/www/tiger>. Technical_Prequisites: The UA Census 2000 TIGER/Line files contain geographic data only and do not include display or mapping software or statistical data. For information on how to use the TIGER/Line data with a specific software package users should contact the company that produced the software. A list of vendors who have developed software capable of processing TIGER/Line files can be found by visiting <http://www.census.gov/geo/www/tiger>. The TIGER/Line files are provided in ASCII text format only. Users are responsible for converting or translating the files into a format used by their specific software package.

Metadata_Reference_Information:

Metadata_Date: 20060911

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

U.S. Department of Commerce U.S. Census Bureau Geography Division Products and Services Staff

Contact_Person: REQUIRED: The person responsible for the metadata information.

Contact_Address:

Address_Type: Physical Address

Address: 8903 Presidential Parkway, Room 303 WP I

City: Upper Marlboro

State_or_Province: Maryland

Postal_Code: 20772

Contact_Voice_Telephone: (301) 457-1128

Contact_Electronic_Mail_Address: tiger@census.gov

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time

Metadata_Access_Constraints: None

Metadata_Use_Constraints: None

Metadata_Security_Information:

Metadata_Security_Classification_System: None

Metadata_Security_Classification: Unclassified

Metadata_Security_Handling_Description: None

Metadata_Extensions:

Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>

Profile_Name: ESRI Metadata Profile