Elevation Contours, NE quadrant of Steep Gully quadrangle, Louisiana, UTM 15 NAD83, Louisiana Federal Emergency Management Agency (FEMA)Rapides Parish, Louisiana under the Watershed Concepts contract number EMT-2002-CO-0048, Task Order 013. [c_3009202ne]

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Watershed Concepts

Publication_Date: 2003

Title:

Elevation Contours, NE quadrant of Steep Gully quadrangle, Louisiana, UTM 15 NAD83, Louisiana Federal Emergency Management Agency (FEMA)Rapides Parish, Louisiana under the Watershed Concepts contract number EMT-2002-CO-0048, Task Order 013. [c_3009202ne]

Description:

Abstract:

This is a line dataset of elevation contours over the NE quadrant of the Steep Gully quadrangle, Louisiana. The data were derived from LIDAR measurements performed in 2002, and are presented at a contour interval of two feet. These data were produced for the Louisiana Federal Emergency Management Agency (FEMA) Rapides Parish, Louisiana under the Watershed Concepts contract number EMT-2002-CO-0048, Task Order 013.

Purpose:

Elevation contour data are a fundamental base map layer for large scale mapping and GIS analysis. The user should be aware that elevation contour models produced by computer are highly sensitive to the algorithm employed and the parameters of the algorithm. As a result, it is easily possible to get to differing results from the same source data. The algorithm and parameters employed to produce this contour model were deemed acceptable for reasons of appearance and processing time. These data will also be acceptable for most 12000 scale maps.

Supplemental_Information:

The metadata for this image are encapsulated into several documents. The metadata are not complete if you did not recieve the following files along with the data set:

c_3009202ne.mtd - this metadata in mp (metadata parser) compatible ASCII text form
c_3009202ne.html - this metadata in HTML form
c_3009202ne_faq.html - this metadata presented as Questions and Answers
c_3009202ne.sgml - this metadata in SGML form
c_3009202ne.xml - this metadata in XML form

The information depicted on this map represents the results of the survey on the dates indicated and can only be considered as indicating the general conditions existing at the time.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 200202

Currentness_Reference:

Approximate date of LIDAR survey used to build the source data for this data set

Status:

Progress: complete

Maintenance_and_Update_Frequency: none planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -90.5625

East_Bounding_Coordinate: -90.5000

North_Bounding_Coordinate: +30.9375

South_Bounding_Coordinate: +30.8750

Keywords:

Theme:

Theme_Keyword_Thesaurus: none

Theme_Keyword: framework

Theme_Keyword: contour

Theme_Keyword: elevation

Place:

Place_Keyword_Thesaurus: None

Place_Keyword: Louisiana

Place_Keyword: Rapides Parish

Access_Constraints: none

Use_Constraints:

These unaltered data may not be redistributed without all of the elements of the metadata listed in the Supplemental_Information section of this metadata document.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Watershed Concepts

Contact_Person: David Key, P.E.

Contact_Address:

Address_Type: Mailing and physical address

Address: 3333 Regency Parkway, Suite 120

City: Cary

State_or_Province: North Carolina

Postal_Code: 27511

Contact_Voice_Telephone: (919)868-5155

Native_Data_Set_Environment: ArcInfo 8.0.2 on Windows 2000

Data_Quality_Information:

Logical_Consistency_Report:

The contour data have been edgematched to adjacent tiles in this project and automated testing has revealed that no contour lines cross others. The data exhibit spikes and on slopes and banks that are the result of trees and bushes that were not effectively filtered out of precursor source data. Pockets of trees result in complex areas of contouring that represent vegetation noise rather than any real variation in bare ground surface.

Completeness_Report:

Depression contours have not been identified. Contour lines enclosing areas smaller than 25 square meters have been eliminated.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: Watershed Concepts

Publication_Date: 2003

Title:

Digital Elevation Model (ArcInfo lattice), NE quadrant of Steep Gully quadrangle, Louisiana, UTM 15 NAD83, Louisiana Federal Emergency Management Agency (FEMA) Project - Phase 2 of Louisiana LIDAR Data Development: Rapides Parish, Louisiana under the Watershed Concepts contract number EMT-2002-CO-0048, Task Order 013. [lat_3009202ne]

Type_of_Source_Media: computer file

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2003

Source_Currentness_Reference: Publication date

Source_Citation_Abbreviation: LAT_3009202ne

Source_Contribution:

Digital Elevation Model (ArcInfo lattice), Rapides Parish, Louisiana under the Watershed Concepts contract number EMT-2002-CO-0048, Task Order 013. [lat_3009202ne]

Source_Information:

Source_Citation:

Citation_Information:

Originator: Watershed Concepts

Publication_Date: 2003

Title:

Hydrography Breakline Data, NE quadrant of Steep Gully quadrangle, Louisiana, UTM 15 NAD83, Louisiana Federal Emergency Management Agency (FEMA)Rapides Parish, Louisiana under the Watershed Concepts contract number EMT-2002-CO-0048, Task Order 013. [bsh_3009202ne]

Type_of_Source_Media: computer file

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2003

Source_Currentness_Reference: Date breakline data were developed

Source_Citation_Abbreviation: BHY_3009202ne

Source_Contribution: Hydrography breaklines

Process_Step:

Process_Description:

SCP_3009202ne and BHY_DSET_NAME were loaded into TerraModeler, and used to produce a TIN surface model that was contoured. The contours were edited as necessary to repair contour line crossings, clipped to a 3.75 minute tile size, then edgematched to adjacent tiles. A DXF export of the contour lines was converted to an ArcInfo line coverage.

Process_Date: 2003

Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: 3001, Inc.

Contact_Position: LIDAR Manager

Contact_Address:

Address_Type: mailing and physical address

Address: 5525 Mounes, Suite 102

City: New Orleans

State_or_Province: LA

Postal_Code: 70123

Contact_Voice_Telephone: (504) 733-3001

Process_Step:

Process_Description: Metadata imported.

Source_Used_Citation_Abbreviation: L:\Task13\metadata\Template\contour_template.xml

Time_of_Day: 16413300

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Network chain, planar graph

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: -93.000000

Latitude_of_Projection_Origin: +00.000000

False_Easting: 500000

False_Northing: 0

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: 0.001

Ordinate_Resolution: 0.001

Planar_Distance_Units: Meters

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1983

Ellipsoid_Name: Geodetic Reference System 80

Semi-major_Axis: 6378137

Denominator_of_Flattening_Ratio: 298.257

Vertical_Coordinate_System_Definition:

Altitude_System_Definition:

Altitude_Datum_Name: North American Vertical Datum of 1988

Altitude_Resolution: 2

Altitude_Distance_Units: Survey Feet

Altitude_Encoding_Method: Attribute values

Metadata_Reference_Information:

Metadata_Date: 20030620

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: 3001, Inc.

Contact_Address:

Address_Type: mailing and physical address

Address: 5525 Mounes Street, Suite 102

City: New Orleans

State_or_Province: LA

Postal_Code: 70123

Contact_Voice_Telephone: (504) 733-3001

Contact_Facsimile_Telephone: (504) 733-8938

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998