gov.noaa.csc.maps:2005_DE_Sussex_m111 NASA, Delaware Geological Survey and the US Geological Survey (USGS) 2005 First Charleston, SC NOAA's Ocean Service, Coastal Services Center (CSC) http://www.csc.noaa.gov/lidar The data were acquired in March 2005 using the NASA Experimental Advanced Airborne Research Lidar (EAARL) platform in Sussex County, Delaware. Once acquired, the data were processed by USGS personnel into both 2-foot contours and digital elevation models. Multiple returns were recorded for each laser pulse. This is a bare earth data set. The points have approximately a 3 m ground spacing. Water points remain in the bare earth data set, they have not been classified as water. The Sussex County dataset was created to provide elevation based data to use for modeling and mapping. This project was funded in part, through a grant from the Delaware Coastal Program with funding from the Office of Ocean and Coastal Resource Management, and the National Oceanic and Atmospheric Administration under award number NA03NOS4190078. 20050301 20050331 Ground Condition Complete None Planned -75.723623 -75.046341 38.967831 38.415440 ISO 19115 Topic Category Elevation None Bathymetry/Topography DEM Digital elevation model Elevation Digital terrain model Surface Model Hydraulic Hydrographic Lidar Hydrologic Modeling Drainage Area Hydrology None US Delaware Sussex County 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be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions.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. Delaware Geological Survey Mailing address

257 Academy Street

Newark Delaware 19716-7501 United States 302-831-2833 302-831-3579 delgeosurvey@udel.edu Mon-Fri, 8am-4:30pm EST The Sussex County dataset was created in a joint effort between the Delaware Geological Survey and the U.S. Geological Survey. While there are no constraints on the use of this data, the DGS and USGS would appreciate mention as the originators if others use these data. This project was funded, in part, through a grant from the Delaware Coastal Programs with funding from the Office of Ocean and Coastal Resource Management, and the National Oceanic and Atmospheric Administration under award number NA03NOS4190078. Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.4.1420 None None Not tested Preliminary fundamental vertical accuracy testing was performed against data collected by NRCS surveyors. Three landuse classes were tested woods, roads, and farm lanes with the aggregate average RMSe being 0.102 m and the greatest RMSe observed was 0.148 m. Delaware Geological Survey and the US Geological Survey 2005 Hard drive 20050301 20050331 Ground Condition Unknown Unknown Data were collected by NASA EAARL (Experimental Advanced Airborne Lidar) during March of 2005. Flying was done out of Salisbury, Maryland. Nominal post spacing was approximately 3 meters, with data denser in areas of flight line overlap. A GPS base station was established and operated for 1 hour prior to, during, and for at least 30 minutes after completion of data collection flights (take off to touch down). The GPS collected data at 1 Hz intervals. GPS data were used for aircraft location correction. Lidar data collected for cross tracks were flown during each data collection flight. Preliminary fundamental vertical accuracy testing was performed against data collected by NRCS surveyors. Three landuse classes were tested woods, roads, and farm lanes with the aggregate average RMSe being 0.102m and the greatest RMSe observed was 0.148m. Processing was done in Airborne Lidar Processing Software (ALPS) by USGS personnel in Reston VA. Final bare-earth point data inspection and clean up was manually performed by USGS personnel in Dover Delaware and Baltimore, MD using ArcMap. 2005 The NOAA Coastal Services Center (CSC) received the data in shapefile format with x, y, and z. The x, y, and z values were extracted from the shapefiles and converted to ASCII formatted text using a processing loop in arc/info. The ASCII files were then converted to LAS format using an internal processing script. CSC then performed the following processing on the data to make it available within the Digital Coast: 1. The data were converted from State Plane coordinates to geographic coordinates. 2. The data were converted from orthometric to ellipsoid heights using Geoid03. 3. The LAS header fields were sorted by latitude and updated. 4. The data were filtered to eliminate outliers. 20090331 Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Coastal Services Center (CSC) CEM Project Scientist Mailing and physical

2234 South Hobson Ave.

Charleston SC 29405 US 843-740-1200 tcm@csc.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. 20110318 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 Point Point 0.000000001 0.000000001 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 Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Coastal Services Center (CSC) CEM Project Scientist Mailing and physical address

2234 South Hobson Ave.

Charleston South Carolina 29405 USA 843.740.1200 tcm@csc.noaa.gov 9:00am - 5:00pm Downloadable Data Any conclusions drawn from the analysis of this information are not the responsibility of the Delaware Geological Survey, the USGS, NASA, 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 Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Coastal Services Center (CSC) CEM Project Scientist Mailing and physical address

2234 South Hobson Ave.

Charleston South Carolina 29405 USA 843.740.1200 tcm@csc.noaa.gov 9:00am - 5:00pm FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998