1:100,000 Tile Grid for Louisiana

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator:
United States Geological Survey, National Wetlands Research Center
Publication_Date: 19990101
Title: 1:100,000 Tile Grid for Louisiana
Geospatial_Data_Presentation_Form: Vector Digital Data
Description:
Abstract:
This dataset contains vector line map information for the index of 1:100,000 Tiles throughout the State of Louisiana. The vector data contains selected base categories of geographic features, and characteristics of these features, in digital form. The data was derived from existing USGS databases. Additional information was added to this database.
Purpose:
To enhance the digital version of the 1:100,000 scale Tile index.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 19980101
Currentness_Reference: Publication date of source data
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -95.011
East_Bounding_Coordinate: -88.000
North_Bounding_Coordinate: 33.512
South_Bounding_Coordinate: 28.500
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Louisiana
Theme_Keyword: State
Theme_Keyword: Tiles
Theme_Keyword: 1:100,000 scale
Theme_Keyword: Grid
Theme_Keyword: Index
Place:
Place_Keyword_Thesaurus:
Department of Commerce, 1990, Counties and Equivalent Entities of the United States, its Possessions, and Associated Areas (Federal Information Processing Standard 6-4): Washington, Department of Commerce, National Institute of Standards and Technology.
Place_Keyword: United States
Place_Keyword: Louisiana
Access_Constraints:
It is strongly recommended that this data is directly acquired from the distributor described above or from another USGS Biological Resources Division server and not indirectly through other sources which may have changed the data in some way. The distributor makes no claims as to the data's suitability for other purposes.
Use_Constraints:
Acknowledgement of the U.S. Geological Survey, National Wetlands Research Center as a data source would be appreciated in products developed from these data, and such acknowledgment as is standard for citation and legal practices for data source is expected by users of this data. Sharing new data layers developed directly from these data would also be appreciated by NWRC staff. Users should be aware that comparison with other data sets for the same area from other time periods may be inaccurate due to inconsistencies resulting from changes in mapping conventions, data collection, and computer processes over time. The distributor shall not be liable for improper or incorrect use of this data, based on the description of appropriate/inappropriate uses described in this metadata document. These data are not legal documents and are not to be used as such.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: USGS's National Wetlands Research Center
Contact_Person: Steve Hartley
Contact_Position: Senior Geographer/GIS Analyst
Contact_Address:
Address_Type: Mailing and Physical Address
Address: 700 Cajundome Blvd.
City: Lafayette
State_or_Province: Louisiana
Postal_Code: 70506
Country: USA
Contact_Voice_Telephone: 337-266-8543
Contact_Facsimile_Telephone: 337-266-8616
Contact_Electronic_Mail_Address: steve_hartley@usgs.gov
Data_Set_Credit:
The U.S. Geological Survey National Wetlands Research Center acknowledges the use of the USGS 1:100,000 scale tile index covering the State of Louisiana.
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.0.0.535
Cross_Reference:
Citation_Information:
Originator: The National Gap Program
Publication_Date: 19990101
Title: Louisiana Gap Project
Geospatial_Data_Presentation_Form: Written text and digital coverage
Series_Information:
Series_Name: National Gap Program
Issue_Identification: Louisiana Gap Project
Publication_Information:
Publication_Place: Lafayette, Louisiana
Publisher:
U.S. Department of the Interior, United States Geological Survey, The National Wetlands Research Center

Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The accuracy is not based on a formal quantitative assessment. Field checking was not performed for this assignment.
Logical_Consistency_Report:
The vector data (polygons) have been edited in an ARC/INFO environment. Each polygon has one and only one attribute.
Completeness_Report:
Processing of digital data follows conventions and standard methodologies for the time period and within limitations of available workstation equipment at the date of data development.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The accuracy of this data meets the accuracy of the National Map Accuracy Standards.
Quantitative_Horizontal_Positional_Accuracy_Assessment:
Horizontal_Positional_Accuracy_Value: 40 feet
Horizontal_Positional_Accuracy_Explanation:
The accuracy of the dataset meets the National Map Accuracy Standards which is met by every 1:100,000 scale DLG utilized in this project. The National Map Accuracy Standards' horizontal accuracy requires that at least 90 percent of points tested are within 0.02 inches of the true position.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
The accuracy of the dataset meets the National Map Accuracy Standards, which is met by every 1:100,000 scale DLG utilized in this project. National Map Accuracy Standards' vertical accuracy requires that at least 90% of well defined points tested be within one half contour interval of the correct value.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: United States Geological Survey
Publication_Date: 19950101
Title: Digital Quadrangle Index for the United States
Geospatial_Data_Presentation_Form: Digital map
Series_Information:
Series_Name: USGS Tile Database of the United States, 1:100,000 scale
Issue_Identification: Catalog of Topographic and Other Published Maps
Publication_Information:
Publication_Place: Reston, Virginia
Publisher: U.S. Geological Survey
Source_Scale_Denominator: 100000
Type_of_Source_Media: Digital database file
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 19950101
Source_Currentness_Reference: Ground Condition
Source_Citation_Abbreviation: Quad
Source_Contribution: Spatial and Attribute information for Tiles.
Process_Step:
Process_Description:
The existing USGS coverage was changed by adding additional information to the coverage and subsetting the coverage to only the tiles within the Louisiana state boundary.
Process_Date: 19990101

Spatial_Data_Organization_Information:
Indirect_Spatial_Reference: The State of Louisiana
Direct_Spatial_Reference_Method: Vector

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 15
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.9996
Longitude_of_Central_Meridian: -87.0
Latitude_of_Projection_Origin: 0.0
False_Easting: 500,000
False_Northing: 0.0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: Coordinate pair
Coordinate_Representation:
Abscissa_Resolution: .61
Ordinate_Resolution: .61
Planar_Distance_Units: Meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1927
Ellipsoid_Name: Clarke 1866
Semi-major_Axis: 6378206.4
Denominator_of_Flattening_Ratio: 249.98

Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
The attributes making up this database include: Length, major and minor codes, covertype-code, covertype-name, Area, Perimeter.
Entity_and_Attribute_Detail_Citation:
U.S. Department of the Interior, U.S. Geological Survey, National Wetlands Research Center.

Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey, National Wetlands Research Center
Contact_Person: Steve Hartley
Contact_Position: Senior Geographer/GIS Analyst
Contact_Address:
Address_Type: Mailing and Physical Address
Address: 700 Cajundome Blvd
City: Lafayette
State_or_Province: Louisiana
Postal_Code: 70506
Country: USA
Contact_Voice_Telephone: 337-266-8543
Contact_Facsimile_Telephone: 337-266-8616
Contact_Electronic_Mail_Address: steve_hartley@usgs.gov
Hours_of_Service: 8:00 am to 4:00 pm CST Monday thru Friday
Resource_Description: 1:100,000 Tile grid for the state of Louisiana
Distribution_Liability:
Although these data have been processed successfully on a computer system at the U.S. Geological Survey, National Wetlands Research Center, no warranty expressed or implied is made regarding the accuracy or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. It is strongly recommended that these data are directly acquired from a Biological Resources Division server, and not indirectly through other sources which may have changed the data in some way. It is also strongly recommended that careful attention be paid to the contents of the metadata file associated with these data. NWRC shall not be held liable for improper or incorrect use of the data described and/or contained herein. So, these data are provided "as is" and without any express or implied warranties, including, without limitation, the implied warranties or merchantability and fitness for a particular purpose. Also, use of trade names or commercial products in this metadata is solely for the purpose of providing specific information, and does not imply recommendation or endorsement by the US Government. Any downloading and use of these data signifies a user's agreement to comprehension and compliance of the NWRC Standard Disclaimer. Insure all portions of metadata are read and clearly understood before using these data in order to protect both user and NWRC interests.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ARC e00
Format_Version_Number: Version 7+
File_Decompression_Technique: ARC/INFO e00 Compression Format
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <http://sdms.nwrc.gov>
Fees: None, if data are available online

Metadata_Reference_Information:
Metadata_Date: 20050721
Metadata_Review_Date: 20030401
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey, National Wetlands Research Center
Contact_Position: Metadata Specialist
Contact_Address:
Address_Type: Mailing and Physical Address
Address: 700 Cajundome Blvd
City: Lafayette
State_or_Province: Louisiana
Postal_Code: 70506
Country: USA
Contact_Voice_Telephone: 337-266-8500
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:
Acknowledgement of the National Wetlands Research Center as the metadata source would be appreciated. Please cite the original metadata when using portions of the record to create a similar record of slightly altered data, such as reprojection.
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile

Generated by mp version 2.7.33 on Thu Jul 21 09:53:45 2005