gov.noaa.csc.maps:20071114_NWFWMD_Holmes_m576 Northwest Florida Water Management District (NWFWMD) Department of Commerce (DOC), National Oceanographic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Coastal Services Center (CSC) 201104 Charleston, SC NOAA's Ocean Service, Coastal Services Center (CSC) http://csc-s-maps-q.csc.noaa.gov/dataviewer/viewer.html?missions=576&aoi=-86.053,-85.482,30.694,31.006 http://www.csc.noaa.gov/lidar http://www.csc.noaa.gov LIDAR-derived binary (.las) files containing points classified as bare-earth and canopy (first return) were produced for the 2007/2008 Northwest Florida Water Management District - 5 Counties (Calhoun, Holmes, Washington, Jackson and Liberty), Florida lidar mapping project. The files were provided in a scheme of FDEM-derived 5,000 x 5,000 foot (1500 x 1500 meter) tiles. When initially processed, horizontal mapping units were in UTM meters, vertical mapping units are in U.S. survey feet. The total mapping area covers approximately 2102 square miles. FEMA map modernization, digital elevation model, planning, topographic interpretation A footprint of this data set may be viewed in Google Earth at: ftp://ftp.csc.noaa.gov/pub/crs/beachmap/qa_docs/fl/nwfwmd/2007_NWFWMD_Lidar_Holmes_County.kmz 20071112 20080120 ground condition Complete As needed -86.053 -85.482 31.006 30.694 ISO 19115 Topic Category elevation None Bathymetry/Topography LIDAR digital surface model elevation bare earth canopy binary classified None Northwest Florida Water Management District NWFWMD Jackson County Florida USA Calhoun County Holmes County Washington County Liberty County none 2007 2008 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be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions.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 base critical applications on this data set without full awareness of potential limitations. Mr John Crowe Northwest Florida Water Management District Associate Hydrologist, Division of Resource Management mailing and physical

81 Water Management Drive

Havana FL 32333 USA 850-539-5999 ron.bartel@nwfwmd.state.fl.us Microsoft Windows XP version 5.1 (Build 2600, Service Pack 2); ArcGIS Desktop 9.1; ArcGIS Workstation 9.1; MARS 4.0 Verification of attribute accuracy of LIDAR data involves the use of filtering techniques. Auto-filtering uses algorithms to reclassify data in the point cloud. Hand-filtering involves the use of a technician working in a graphic environment to reclassify the erroneous points that may remain in the LIDAR point cloud after auto filter. n/a n/a Calibrations of the LIDAR flight line data are performed; this process is known as bore sighting. The flight lines are compared to evaluate both their relative and absolute accuracies. This dataset contains classified returns of the LIDAR sensor. The sensor data was verified in MARS software to ensure complete coverage. Horizontal accuracy is verified in three tests. During bore sighting, adjoining flight lines are view in profile and hard edged features are observed and if necessary the flight lines are adjusted for good relative horizontal and vertical fit. The second test for horizontal accuracy is by comparing raw contours from each flight line against adjoining flight lines at specific points. The final test is the vertical LIDAR control report. Survey control points were used to validate the accuracy of the LIDAR surface model after automatic and hand filtering. This surface exceeds the NSSDA vertical accuracy specifications of 1.2 ft. 0.149352 This value is measured as RMSEz. 0.15448 This value is measured as vertical accuracy. Merrick & Company 20070317 spreadsheet Aurora, CO Merrick & Company GPS ground checkpoints were provided by: Allen Knobles & Associates, Inc., 2844 Pablo Avenue, Tallahassee, FL 32308, Phone: 850-385-1179 spreadsheet 20071112 Unknown publication date GROUND_CONTROL GPS control network for LIDAR acquisition and processing. Merrick & Company 20070317 point digital data Aurora, CO Merrick & Company digital data 20071112 Unknown 20080120 Unknown ground condition LIDAR LIDAR points form the basis of the DTM surface. LIDAR data was collected using Merrick's ALS50 Phase 2 sensor. The raw data was verified in MARS software for complete coverage of the project area, and bore sighted to align the flight lines. Raw data files were parsed into manageable client-specific tiles. These tiles were then processed through automated filtering that separates the data into different classification groups: error points, ground points, and canopy/building points. The data was next taken into a graphic environment to reclassify the erroneous points that may remain in the LIDAR point cloud after auto filter. LIDAR GROUND_CONTROL 20070611 Doug Jacoby Merrick & Company Director of Projects / Project Manager mailing and physical

2450 South Peoria Street

Aurora CO 80014 U.S.A. 303-353-3903 303-745-0964 doug.jacoby@merrick.com 8 am - 5 pm, Mountain Time Zone, Monday thru Friday Call or email during business hours The NOAA Coastal Services Center (CSC) received the lidar files 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. Data converted from UTM coordinates to geographic coordinates. 2. Data converted from NAVD88 heights to ellipsoid heights using GEOID03. 3. The LAS data were sorted by latitude and the headers were updated. 201104 NOAA Coastal Services Center Clearinghouse Manager mailing and physical

2234 South Hobson Avenue

Charleston South Carolina 29405 843-740-1200 clearinghouse@noaa.gov 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. 20110630 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 (NAD83) Geodetic Reference System 80 (GRS80) 6378137.000000 298.257222 Ellipsoid 0.01 meters Explicit elevation coordinate included with horizontal coordinates NOAA Coastal Services Center Clearinghouse Manager mailing and physical

2234 South Hobson Avenue

Charleston SC 29405-2413 843-740-1200 clearinghouse@noaa.gov Downloadable Data Any conclusions drawn from analysis of this information are not the responsibility of the Northwest Florida Water Management District (NWFWMD), the NOAA 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 Clearinghouse Manager mailing and physical Charleston SC 29405-2413 843-740-1210 clearinghouse@noaa.gov FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998