gov.noaa.csc.maps:2009_USACE_Texas_m1063 Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Coastal Services Center (CSC) Joint Airborne Lidar Bathymetry Technical Center of eXpertise (JALBTCX) 201109 Charleston, SC NOAA's Ocean Service, Coastal Services Center (CSC) http://csc-s-maps-q.csc.noaa.gov/dataviewer/viewer.html?missions=1063&aoi-97.403417,-95.277455,25.951459,28.957342 http://csc-s-maps-q.csc.noaa.gov/dataviewer/viewer.html?keyword=lidar http://www.csc.noaa.gov/lidar http://www.csc.noaa.gov This Light Detection and Ranging (LiDAR) classified (ASPRS LAS classifications) dataset is a topographic survey conducted for the West Texas Aerial Survey 2009 project. This data was produced for the US Army Corps of Engineers (USACE) Joint Airborne Lidar Bathymetry Technical Center of Expertise (JALBTCX). The LiDAR point cloud was flown at a density sufficient to support a maximum final post spacing of 1 point per meter. 3001 International Inc. acquired 81 flightlines between February 3, 2009 and April 23, 2009. The West Texas Aerial Survey 2009 was collected under the guidance of a Professional Mapper/Surveyor. The area of coverage includes portions of the coastline in the following counties: Aransas, Brazoria, Calhoun, Cameron, Kenedy, Kleberg, Matagorda, Nueces, San Patricio, and Willacy. The West Texas Aerial Survey 2009 project will support the US Army Corps of Engineers (USACE) Joint Airborne Lidar Bathymetry Technical Center of Expertise (JALBTCX) collection of data representing the post-hurricane condition of the beaches, barrier islands, and lakeshores along the coasts of Texas. A footprint of this data set may be viewed in Google Earth at: ftp://ftp.csc.noaa.gov/pub/crs/beachmap/qa_docs/tx/2009_USACE_JALBTCX_South_Texas_Coast_Lidar.kmz 20090203 20090423 ground condition Complete None planned -97.403417 -95.277455 28.957342 25.951459 ISO 19115 Topic Category elevation None Bathymetry/Topography Elevation Height LAS V.1.2 LiDAR Topography Lidar None United States Texas Aransas County Brazoria County Calhoun County Cameron County Kenedy County Kleberg County Matagorda County Nueces County San Patricio County Willacy County None 2009 February March April None Users should be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions. Users should not use this data for critical applications without a full awareness of its limitations. Northrop Grumman (formerly 3001 International Inc.) LiDAR Department mailing and physical

5821 Rangeline Road Suite 101

Theodore Alabama 36582 USA (985) 661 - 3001 (985) 649 - 5082 8:00 - 5:00 CDT ftp://ftp.csc.noaa.gov/pub/crs/beachmap/qa_docs/tx/2009_USACE_JALBTCX_South_Texas_Coast_Lidar.kmz This kmz file shows the lidar footprint for the 2009 USACE JALBTCX Lidar for portions of the south Texas coast. kmz US Army Corps of Engineers (USACE) Joint Airborne Lidar Bathymetry Technical Center of Expertise (JALBTCX) Unclassified Unclassified Unclassified Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.3000 3001 International Inc. Unknown Unknown raster digital data Slidell, LA 3001 International Inc. The West Texas Aerial Survey 2009 project was collected under the guidance of a Professional Mapper/Surveyor. The data were collected at a density sufficient to support a maximum final post spacing of 1.5 points per meter. The Light Detection and Ranging (LiDAR) LAS dataset is a topographic survey conducted for the West Texas Aerial Survey Project. This data was produced for US Army Corps of Engineers (USACE) Joint Airborne Lidar Bathymetry Technical Center of Expertise (JALBTCX). The LAS files were flown at a density sufficient to support a maximum final post spacing of final post spacing of 1.5 points per meter. All ground control processing and adjustment is performed using published coordinate horizontal and vertical datums (e.g. NGS CORS). For deliverables, Corpscon for Windows Version 5.11.08 (geoid 03) was used for horizontal and vertical datum conversion as well as for coordinate system conversion purposes (e.g. UTM to State Plane). 0.5 Not provided The accuracy assessment was performed using a standard method to compute the root mean square error (RMSE) based on a comparison of ground control points (GCP) and filtered LiDAR data points. Filtered LiDAR data has had vegetation and cultural features removed and by analysis represents bare-earth elevations. The RMSE figure was used to compute the vertical National Standard for Spatial Data Accuracy (NSSDA). Ground control was established by 3001, Inc. A spatial proximity analysis was used to select edited LiDAR data points contiguous to the relevant GCPs. A search radius decision rule is applied with consideration of terrain complexity, cumulative error, and adequate sample size. Cumulative error results from the errors inherent in the various sources of horizontal measurement. These sources include the airborne GPS, GCPs, and the uncertainty of the accuracy of the LiDAR data points. This accuracy is achieved prior to the sub-sampling that occurs through integration with the inertial measurement unit (IMU) positions that are recorded. It is unclear at this time whether the initial accuracy is maintained. The horizontal accuracy of the GCPs is estimated to be in the range of approximately 1 to 1.6 inches. Finally, sample size was considered. The specification for the National Standard for Spatial Data Accuracy is a minimum of 20 points to conduct a statistically significant accuracy evaluation (Minnesota Planning, 1999, Positional Accuracy Handbook, Minnesota Planning Land Management Information Center, St. Paul, Minnesota., p.3). Most statistical texts indicate that a minimum of 30 sample points provide a reasonable Approximation of a normal distribution. The intent of the NSSDA is to reflect the geographic area of interest and the distribution of error in the data set (Federal Geographic Data Committee, 1998, Geospatial National Standard for Spatial Data Accuracy, Federal Geographic Data Committee Secretariat, Reston, Virginia, p.3-4). Additional steps were taken to ensure the vertical accuracy of the LiDAR data including: Step 1: Precision Bore sighting (Check Edge-matching) Step 2: Compare the LiDAR data to the Field Survey (Field survey is to FEMA specifications and more stringent internal specifications) Step 3: Automated Filtering Step 4: Manual Editing (Quality Control) 0.15 See Vertical Positional Accuracy Report 3001 International Inc. Unknown Unknown raster digital data Slidell, LA 3001 International Inc. 24000 digital tape media 20090203 Unknown 20090423 Unknown ground condition scale map The West Texas Aerial Survey 2009 was acquired for US Army Corps of Engineers (USACE) Joint Airborne Lidar Bathymetry Technical Center of Expertise (JALBTCX) and processed by 3001 International Inc. The Airborne Global Position System (ABGPS), inertial measurement unit (IMU), and raw scans are collected during the LiDAR aerial survey. The ABGPS monitors the xyz position of the sensor and the IMU monitors the orientation of the aircraft. During the aerial survey laser pulses reflected from features on the surface and are detected by the receiver optics and collected by the data logger. GPS locations are based on data collected by receivers on the aircraft and base stations on the ground. The ground base stations are placed no more than 20 km radius from the flight survey area. 20100115 3001 International Inc. LiDAR Department mailing and physical

501 Robert Blvd

2nd Floor

Slidell Louisiana 70458 USA (985) 661 - 3001 (985) 649 - 5082 lidar@3001inc.com 8:00 - 5:00 CDT The ABGPS, IMU, and raw scans are integrated using proprietary software developed by Optech and delivered with the Optech ALTM Gemini System. The resultant file is in a LAS binary file format. The LAS file version 1.1 format can be easily transferred from one file format to another. It is a binary file format that maintains information specific to the LiDAR data (return#, intensity value, xyz, etc.). The resultant points are referenced to the Geographic NAD83 horizontal datum and NAVD88 vertical datum. 20090527 3001 International Inc. LiDAR Department mailing and physical

501 Robert Blvd

2nd Floor

Slidell Louisiana 70458 USA (985) 661 - 3001 (985) 649 - 5082 lidar@3001inc.com 8:00 - 5:00 CDT The data is subjected to rigorous QA/QC according to the 3001 Inc. Quality Control Plan and procedures. Very briefly, a series of quantitative and visual procedures are employed to validate the accuracy and consistency of the data. Ground control is established by 3001, Inc. and GPS-derived ground control points (GCPs) points in various areas of dominant and prescribed land cover. These points are coded according to landcover, surface material, and ground control suitability. A suitable number of points are selected for calculation of a statistically significant accuracy assessment as per the requirements of the National Standard for Spatial Data Accuracy. A spatial proximity analysis is used to select edited LiDAR data points within a specified distance of the relevant GCPs. A search radius decision rule is applied with consideration of terrain complexity, cumulative error, and adequate sample size. Accuracy validation and evaluation is accomplished using proprietary software to apply relevant statistical routines for calculation of Root Mean Square Error (RMSE) and the National Standard for Spatial Data Accuracy (NSSDA) according to Federal Geographic Data Committee (FGDC) specifications. 20090527 3001 International Inc. LiDAR Department mailing and physical

501 Robert Blvd.

2nd Floor

Slidell Louisiana 70458 USA (985) 661 - 3001 (985) 649 - 5082 lidar@3001inc.com 8:00 - 5:00 CDT Metadata imported. Z:\Data01\Gustav_Ike\Phase_2_Deliverables\Lidar\2009_postike_29093f7c_2009_02_05_201.xml 20100901 16513500 Metadata imported. Z:\Data01\Gustav_Ike\Phase_2_Deliverables\Lidar\WTXLAS.shp.xml 20100901 17282400 The NOAA Coastal Services Center (CSC) received classified data (ASPRS LAS classifications) in las format. The files contained LiDAR intensity and elevation measurements. CSC performed the following processing for data storage and Digital Coast provisioning purposes: 1. The data were converted from NAVD88 heights to ellipsoid heights using Geoid03. 2. The LAS header fields were sorted by latitude and updated. 201109 NOAA Coastal Services Center mailing and physical

2234 South Hobson Ave.

Charleston SC 29405 US 843-740-1200 csc.info@noaa.gov For questions please use the form at http://www.csc.noaa.gov/contact/contactForm.htm The NOAA National Geophysical Data Center (NGDC) received Lidar data files by ftp. The data received compressed containing LiDAR data from the NOAA Coastal Services Center. The data are currently being served via Digital Coastl at http://www.csc.noaa.gov/digitalcoast/. The data can be used to re-populate the system. The data are provided in LAS format. LAS format is an industry standard for serving LiDAR data. The data are exclusively in geographic coordinates, however, the datums used vary. Most are NAD 83, however some are in ITRF. Vertical systems include both ellipsoid (ITRF and NAD 83) and NAVD 88. For NAVD 88 values, Geiod 03 is primarily used; however, data received in NAVD 88 prior to 2003 was processed using Geoid 99. 20110922 DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce Pamela Grothe Mailing and Physical Address

NOAA/NESDIS/NGDC E/GC1 325 Broadway

Boulder CO 80305-3328 USA (303) 497-6120 (303) 497-6958 (303) 497-6513 pamela.grothe@noaa.gov 7:30-5:00 Mountain Contact Data Center 0 Point 0.0000001 0.0000001 Decimal degrees North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 Ellipsoid 0.001 Meters Explicit elevation coordinate included with horizontal coordinates NOAA Coastal Services Center mailing and physical

2234 South Hobson Ave.

Charleston SC 29405-2413 843-740-1200 csc.info@noaa.gov For questions please use the form at http://www.csc.noaa.gov/contact/contactForm.htm Downloadable Data Any conclusions drawn from the analysis of this information are not the responsibility of USACE, JALBTCX, the Coastal Services Center, or its partners. This data can be obtained on-line at the following URL: http://www.csc.noaa.gov/lidar DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce Pamela Grothe Mailing and Physical Address

NOAA/NESDIS/NGDC E/GC1 325 Broadway

Boulder CO 80305-3328 USA (303) 497-6120 (303) 497-6958 (303) 497-6513 pamela.grothe@noaa.gov 7:30-5:00 Mountain Contact Data Center Disclaimer While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. The National Geophysical Data Center serves as the archive for this LIDAR data. NGDC should only be contacted for this data if it cannot be obtained from NOAA Coastal Services Center. 20111119 20111119 20121119 NOAA Coastal Services Center mailing and physical

2234 South Hobson Ave.

Charleston SC 29405-2413 843-740-1200 csc.info@noaa.gov For questions please use the form at http://www.csc.noaa.gov/contact/contactForm.htm FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998