gov.noaa.csc.maps:2010_GLRI_Bathy_m586 Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Coastal Services Center (CSC) Fugro LADS Inc. 20110211 Lidar survey Charleston, SC NOAA's Ocean Service, Coastal Services Center (CSC) http://csc-s-maps-q.csc.noaa.gov/dataviewer/viewer.html?missions=586&aoi=-92.094878,-87.655578,46.561792,47.966392 http://www.csc.noaa.gov/lidar http://www.csc.noaa.gov The data contained in this file contain hydrographic and topographic data collected by the Fugro LADS Mk II system along the Lake Superior coast of Minnessota, Wisconsin and Michigan. FLI was contracted under Fugro Earth Data Inc (FEDI) by NOAA Coastal Services Center (CSC) to collect data under the Great Lakes Restoration Initiative. All point data has delivered is in LAS 1.2 format The file has been classified so that all points are classified as first return or bare earth First return points include all vegetation, buildings or other feature with fixed position Bare earth points exclude vegetation, buildings, piers, jetties, nav aids, bridges and any other fixed man made feature. Except for break waters and retaining walls along the shore line. This data was collected as part of the Great Lakes Restoration Initiative (GLRI), an inter-agency initiative lead by the Environmental Protection Agency (EPA) targeting areas with the most significant problems in the Great Lakes region. Data extends off shore from the shoreline to extinction depth or 1km, which ever is closer. Data extends onshore from the shoreline to 30m. Gaps in Bathymetry can be attributed to turbid water, glassy lake surfaces, boats, extinction depths Gaps in bathymetry were reflown multiple times to attempt full bottom coverage. Gaps in Topography occur where data collected was rejected due to significant datum errors after long sections of over land. These areas were attempted multiple times. The Lidar Collection Survey Report for this data set may be viewed at: ftp://ftp.csc.noaa.gov/pub/crs/beachmap/qa_docs/glri/2010_GLRI_Survey_Report.pdf A footprint of this data set may be viewed in Google Earth at: ftp://ftp.csc.noaa.gov/pub/crs/beachmap/qa_docs/glri/2010_GLRI_Bathymetric_Lidar_Lake_Superior.kmz 20100702 20100812 Ground Condition Complete As needed -92.094878 -87.655578 47.966392 46.561792 ISO 19115 Topic Category elevation None Bathymetry/Topography Lidar LADS Mk II las digital elevation model None US Minnesota Wisconsin Michigan Great Lakes Lake Superior 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. Fugro LADS Inc Project Manager Mailing and physical address

2113 Governmnet St. Suite I

Ocean Springs MS 39564 USA +1 228 818 8390 +1 228 875 3358 ladsusa@fugrolads.com 8am-5pm Monday through Friday Acknowledgement of Fugro LADS Inc (FLI) would be appreciated in any publications provided or derived products. FLI Ground System L3.3. CARIS Hips/Sips 7.0.2 CARIS Base Editor 2.3.0 Global Mapper 11.02 Grafnav 8.10 Fugro Workbench 4.01.08.00 ESRI ArcGIS 9.3.1 The data in this file were tested against independantly collected ground truth data. At these locations the Lidar data matched vertically within 0.20 meters. Relative checks over crosslines and benchmarks agreed vertically within 0.10 meters. See Report of Survey The data positions were obtained using post processed KGPS methods. The horizontal accuracy of the data is better than +/- 3m. 3.0 2 sigma The data positions were reduced to IGLD85 using water level gauges in proximity to the data collection areas. In order to transform the data to ellipsoid heights an intermediate step of vertically transforming the data from IGLD85 to NAVD88 was completed. There was a 0.025m error associated with this transformation. The vertical accuracy of the data is better than +/- 0.293m. 0.293 2 sigma This data was collected using the LADS Mk II bathymetric Lidar survey system. It is owned by Fugro LADS Corp. and was operated by Fugro LADS, Inc. The system collects bathymetric/topographic data at 1kHz. The system also collects digital imagery at 1Hz. Aircraft position information is collected with Wide Area Differential (WADGPS) through Omistar and is logged with GrafNav. The LADS Mk II system operated on a stabalised platform. Raw data are copied from the LADS Air System (AS) to the LADS Ground System (GS) where post processed GPS is applied as the raw data is processed, producing a 3-D position for each waveform in the dataset. The data was reduced with the use of water level information downloaded from NOAA COOPS website to vertical datum IGLB85 minus a constant 183.2 meters (the LADS ground system allows tidal corrections less than +/- 100 meters due to usual operation in areas closer to mean sea level). 183.2 meters was added back to each sounding as data was exported out of the LADS Ground System to reference it to IDLG85. Data was then shifted by a constant 0.03m to reference the dataset to NAVD88. Fugro Earth Data Inc. then completed the final trasformation to the NAD83 datum. First return and bare earth data sets were exported as LAS 1.2 format files and delivered to Fugro Earth Data Inc. for classification. Unknown Fugro LADS Inc. Project Manager Mailing and physical address

2113 Government St. Suite I

Ocean Springs MS 39564 USA +1 228 818 8390 +1 228 875 3358 ladsusa@fugrolads.com 8am to 5pm Monday through Friday Both LAS files were merged, if the same data point existed in both data sets then it was assigned a bare earth classification in the first return data set; If a point existed in the first return dataset and not in the bare earth data set it was assigned a first return classification in the first return LAS data set. To maintain header information the single classified LAS file was then imported into ProjMap for transformation from IGLD85 to GRS80 heights. As ProjMap does not recognize IGLD85 an assumption was made that IGLD85 heights and NAVD88 heights are the same with an error of +/-0.01m. This was determined by transforming a sample of points across the data set with a height value of 183.2m (lake surface) and converting them to NAVD88 with NOAA's VDatum. The average difference across the sample set was < 1cm. GeoCoding in GeoCue was ran to assign the correct header information to the file. The classified LAS 1.2 format file was delivered back to Fugro LADS Inc. Unknown Fugro Earth Data Inc. Project Manager Mailing and physical address

7320 Executive Way

Frederick MD 21704 USA +1 301 948 8550 +1 301 963 2064 info@earthdata.com The NOAA Coastal Services Center (CSC) received files in LAS format. The files contained bathymetric Lidar depth measurements. CSC performed the following processing on the data for data storage purposes and Digital Coast provisioning: 1. The data were converted from projected UTM (NAD83, Zone 15 & 16) coordinates to geographic (NAD83) coordinates 2. The data were converted from NAVD88 heights to ellipsoid heights using Geoid09 3. The LAS header fields were sorted by latitude and updated 20110510 NOAA Coastal Services Center Clearinghouse Manager mailing and physical

2234 South Hobson Ave.

Charleston SC 29405 US 843-740-1210 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. 20110610 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 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 Clearinghouse Manager mailing and physical

2234 South Hobson Ave.

Charleston SC 29405-2413 843-740-1210 clearinghouse@noaa.gov Downloadable Data Any conclusions drawn from the analysis of this information are not the responsibility of 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 Clearinghouse Manager mailing and physical Charleston SC 29405-2413 843-740-1210 clearinghouse@noaa.gov FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998