Watershed Concepts 2003 This is a dataset of select hydrography breaklines over the SW quadrant of the Lake Charles Southeast quadrangle, Louisiana. The breaklines represent the water edge for wide channel rivers and canals, and the shoreline of lakes. These data were produced for the Louisiana Federal Emergency Management Agency (FEMA) Project - Phase 2 of Louisiana LIDAR Data Development: Calcasieu Parish, Louisiana under the Watershed Concepts contract number EMT-2002-CO-0048, Task Order 012. BSH breaklines define drainage features whose distance from channel bank to channel bank are less than 50 feet (15 meters). The data are provided in ArcInfo 'generate' format suitable for input into a TIN model. These data improve the representation of terrain in an elevation model where point data is insufficient to provide a good representation, where flow channels are blocked from (LIDAR) view by vegetation, and where minor variations in sensed surface elevation would otherwise give rise to contours in and across large water bodies. The metadata for this image are encapsulated into several documents. The metadata are not complete if you did not receive the following files along with the data set: >bsh_3009364sw.mtd - this metadata in mp (metadata parser) compatible ASCII text form >bsh_3009364sw.html - this metadata in HTML form >bsh_3009364sw_faq.html - this metadata presented as Questions and Answers >bsh_3009364sw.sgml - this metadata in SGML form >bsh_3009364sw.xml - this metadata in XML form The information depicted on this map are the results of the survey on the dates indicated and can only be considered as indicating the general conditions existing at the time. 2003 Date these breakline data were developed complete none planned -90.5625 -90.5000 +30.9375 +30.8750 none framework breakline elevation hydrography None Louisiana Calcasieu 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 breaklines were constructed under the model representation that water courses vary linearly in elevation or are constant in elevation between critical points established in the breakline model. These breaklines were determined from LIDAR and orthophoto data of specific dates and that model the land/water contributions and extents on those dates. This data set models rivers and canals that consistently meet or exceed 25 meters in width and lakes or ponds that are 50 or more meters in length along the long axis. Watershed Concepts 2003 computer file 200202 Approximate date of LIDAR survey used to build the source data for this data set RAW_3009364sw Raw LIDAR data from which this data set was derived Louisiana Oil Spill Coordinator's Office (LOSCO) United States Geological Survey (USGS) 2000 computer file 199801 199803 Primary date range of aerial photography from which orthophotography was produced. GEOTIFF Reference data set for water body selection and delineation RAW_3009364sw data was edited using ELVIS software to eliminate above-ground features such as buildings, trees and overpasses. 2003 3001, Inc. LIDAR Manager mailing and physical address

5525 Mounes, Suite 102

New Orleans LA 70123 (504) 733-3001 TerraModeler software was used to display the reference GeoTIFF orthophotos and the ELVIS edited raw_3009364sw LIDAR point data and to construct breaklines for the water edge of wide channel rivers and canals, and the shoreline of lakes. Breakline elevations were linearly ramped between identified critical elevation points along flowing water courses or were set at a fixed level for lakes based on lowest observed shoreline elevation or water return elevation. The breakline data from individual 3.75' tiles are edgematched into regional breaklines, clipped to an exact 3.75 minute tile then converted to a format suitable for 'generate' input in an ArcInfo CREATETIN process. 2003 Metadata imported. N\A 14493600 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 0.01 Survey Feet Attribute values The data consist of a series of arcs represented as a list of xyz coordinates for vertices. All the arcs are coded to represent 'hard' breaklines. ArcInfo on-line help, the 'generate' section for CREATETIN. 20030620 3001, Inc. mailing and physical address

5525 Mounes Street, Suite 102

New Orleans LA 70123 (504) 733-3001 (504) 734-8938 FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998