Watershed Concepts 2003 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. 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. 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. 200202 Approximate date of LIDAR survey used to build the source data for this data set complete none planned -90.5625 -90.5000 +30.9375 +30.8750 none framework contour elevation None Louisiana Rapides Parish none 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. Watershed Concepts David Key, P.E. Mailing and physical address

3333 Regency Parkway, Suite 120

Cary North Carolina 27511 (919)868-5155 ArcInfo 8.0.2 on Windows 2000 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. Depression contours have not been identified. Contour lines enclosing areas smaller than 25 square meters have been eliminated. Watershed Concepts 2003 computer file 2003 Publication date LAT_3009202ne Digital Elevation Model (ArcInfo lattice), Rapides Parish, Louisiana under the Watershed Concepts contract number EMT-2002-CO-0048, Task Order 013. [lat_3009202ne] Watershed Concepts 2003 computer file 2003 Date breakline data were developed BHY_3009202ne Hydrography breaklines 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. 2003 3001, Inc. LIDAR Manager mailing and physical address

5525 Mounes, Suite 102

New Orleans LA 70123 (504) 733-3001 Metadata imported. L:\Task13\metadata\Template\contour_template.xml 16413300 Vector Network chain, planar graph Universal Transverse Mercator 15 0.9996 -93.000000 +00.000000 500000 0 coordinate pair 0.001 0.001 Meters North American Datum of 1983 Geodetic Reference System 80 6378137 298.257 North American Vertical Datum of 1988 2 Survey Feet Attribute values 20030620 3001, Inc. mailing and physical address

5525 Mounes Street, Suite 102

New Orleans LA 70123 (504) 733-3001 (504) 733-8938 FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998