gov.noaa.csc.maps:2005-2007_NE_Topobathy_m116 JALBTCX (Joint Airborne Lidar Bathymetry Technical Center of eXpertise) 2009 Charleston, SC NOAA's Ocean Service (NOS), Coastal Services Center (CSC) http://www.csc.noaa.gov/lidar MASSACHUSETTS AND RHODE ISLAND: The U.S. Army Corps of Engineers collects (by themselves and contractors) and maintains LiDAR data including orthophotos in coastal areas of the United States and its territories. The Corps acquires this data in the course of performing its mission of Flood Control, Navigation, Environmental Engineering, and support for the Army and others. Topographic LIDAR datasets were collected using a SHOALS-1000T at 500m altitude, spot density of 2m x 1 m and sampling rate 10kHz. Bathymetric data were collected using a SHOALS-1000T hydrographic laser flying at 400m altitude, spot spacing 5m x 5m and 1kHz sampling rate. MA and RI Data Date of Collection: Topo 20051111-20051202 Bathy: 20070527-20070601 MAINE: The U.S. Army Corps of Engineers collects (by themselves and contractors)and maintains LiDAR data including orthophotos in coastal areas of the United States and its territories. Topographic LIDAR datasets were collected using a SHOALS-1000T at 500m altitude, spot density of 2m x 1m and sampling rate of 10 kHz. Topo data were also collected with a Leica ALS-50 sensor at 1600m altitude spot spacing of 1m x 1m spot spacing, and 133 kHz sampling rate. Bathymetric data were collected using a SHOALS-1000T hydrographic laser flying at 400m altitude, spot spacing 5m x 5m and 1kHz sampling rate. ME Data Date of Collection: Topo 20051019-20070806 Bathy: 20070606-20070611 This data is not a bare earth dataset. The purpose of this survey was to obtain the existing conditions of the beach and near shore in support of the Joint Airborne LIDAR Bathymetric Technical Center of Expertise National Coastal Mapping Program (NCMP). 20051111 20070806 Ground Condition Complete As needed -71.944389 -69.714932 43.808611 41.133922 ISO 19115 Topic Category Elevation None Bathymetry/Topography Lidar Elevation None US Maine Massachusetts Rhode Island Atlantic Ocean None NCMP U.S. Army Corps of Engineers, Mobile District CHARTS SHOALS JALBTCX None 2005 2006 2007 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be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions.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. JALBTCX Data Production Manager Mailing and physical address

7225 Stennis Airport Rd., STE 100

Kiln MS 39556 USA 228-252-1103 228-252-1121 shoals-info@sam.usace.army.mil 8 am - 5 pm Monday through Friday Acknowledgement of the Joint Airborne Lidar Bathymetry Technical Center of eXpertise (JALBTCX) would be appreciated in any publications or derived products. These data are not attributed. N/A These data are not attributed. See Process Step See Process Step The data has been collected and compiled to meet a +/- 3m (2 sigma) accuracy specification. The data has been collected and compiled to meet a +/- 30cm (2 sigma) accuracy specification. FOR MASSACHUSETTS AND RHODE ISLAND DATA Acquisition LIDAR data were acquired using a SHOALS-1000T. Sensor orientation was measured using a POS AV 410. Prior to survey PDOP was checked and missions planned to avoid PDOP greater than 3.0. During survey the plane was always within 30km of a GPS ground control point, to provide a good quality position solution. Final positions were determined using a post-processed inertially aided Kinematic GPS (KGPS) solution. GPS ground control data were acquired at 1Hz. Data received by the airborne system were continually monitored for data quality during acquisition operations. Display windows showed coverage and information about the system status. In addition, center waveforms at 5Hz were shown. All of this information allowed the airborne operator to assess the quality of data being collected. Data were processed in the field to verify coverage and data quality. Processing SHOALS-1000T data were processed using the SHOALS Ground Control System (GCS). The GCS includes links to Applanix POSPac software for GPS and inertial processing, and IVS Fledermaus software for data visualization, 3D editing and tie-line analysis. All data were processed in NAD83 horizontal and vertical datum. Data were later converted to the NAVD88 vertical datum using the GEOID03 model. Fugro in-house utilities were used to split the data in to pre-defined boxes, each covering approximately 5km of shoreline. ASCII files include Longitude, Latitude, UTM Zone, Easting (UTM), Northing, Elevation, Elevation (NAD83), Date, Time, Intensity (Topo). FOR MAINE DATA Acquisition Lidar data were acquired using a SHOALS-1000T. Sensor orientation was measured using a POS AV 410, while images were acquired at 1Hz using a Duncantech DT4000 digital camera. Prior to survey PDOP was checked and missions planned to avoid PDOP greater than 3.0. During survey the plane was always within 30km of a GPS ground control point, to provide a good quality position solution. Final positions were determined using a post-processed inertially aided Kinematic GPS (KGPS) solution. GPS ground control data were acquired at 1Hz. Topographic Data were also acquired using a Leica ALS-50 operated by Fugro EarthData. Processing SHOALS data were processed using the SHOALS Ground Control System (GCS). The GCS includes links to Applanix POSPac software for GPS and inertial processing, and IVS Fledermaus software for data visualization, 3D editing and tie-line analysis. ALS-50 data were processed the TerraSolid Terrascan software. Applanix POSPac software was used for GPS and inertial processing. All data were processed in NAD83 horizontal and vertical datum. Data were later converted to the NAVD88 vertical datum using the GEOID03 model. Fugro in-house utilities were used to split the data in to pre-defined boxes, each covering approximately 5km of shoreline. ASCII files include Longitude, Latitude, UTM Zone, Easting (UTM), Northing, Elevation, Elevation (NAD83), Date, Time, Intensity (Topo). 20080429 Fugro Pelagos, Inc. Hydrographic Lidar Technical Manager Mailing and physical address

3738 Ruffin Road

San Diego CA 92123 USA 228-252-1111 858-292-8922 228-252-1133 8am - 5pm Monday through Friday The NOAA Coastal Services Center (CSC) received topo and hydro files in ASCII format. The files contained Lidar elevation and intensity measurements. Both the topo and hydro points were classed as 'never classified.' The data were provided in Geographic coordinates and ellipsoid and orthometric heights. CSC performed the following processing to the ellipsoid height data to make it available within the Digital Coast: 1. LASEdit was used to convert the ASCII formatted files to las format. 2. Both the topo and the hydro points were classified as 'never classified.' Hydro points were changed to class 11, 'water' and topo points were changed to 'unclassified.' 3. The LAS data were sorted by latitude and the headers were updated. 4. The data were filtered to eliminate elevation outliers. 20090420 Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Coastal Services Center (CSC) Coastal Elevation Mapping (CEM) Project Scientist Mailing and physical address

2234 South Hobson Ave.

Charleston SC 29405-2413 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. 20110328 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 0.000000001 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) Coastal Elevation Mapping (CEM) Project Scientist Mailing and physical address

2234 South Hobson Ave.

Charleston SC 29405-2413 843-740-1200 tcm@csc.noaa.gov Downloadable Data Any conclusions drawn from the analysis of this information are not the responsibility of USACE, JALBTCX, Fugro Pelagos, Inc, 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 Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Coastal Services Center (CSC) Coastal Elevation Mapping (CEM) Project Scientist Mailing and physical address Charleston SC 29405-2413 843-740-1200 tcm@csc.noaa.gov FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998