gov.noaa.csc.maps:2008_NJ_Salem_m543 Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Coastal Services Center (CSC) 201008 LAS Charleston, SC NOAA's Ocean Service, Coastal Services Center (CSC) http://www.csc.noaa.gov/lidar http://www.csc.noaa.gov The South New Jersey County Lidar Project is to provide LiDAR data for the New Jersey Department of Environmental Protection (NJ-DEP) for Cape May, Cumberland, and part of Salem Counties in New Jersey. These datasets will be the initial acquisition to support the United States Geological Survey (USGS) and the New Jersey Department of Environmental Protection (NJ-DEP). This LiDAR data set was collected in April 2008 for the bay side of Salem County and covers 76 square miles. The data are classified as follows: Class 1 - Unclassified/Extracted Features Class 2 - Bare Earth, Ground Class 9 - Water Class 12 - Overlap The South New Jersey County Lidar project is to provide LiDAR data for New Jersey Department of Environmental Protection (NJ-DEP). This project acquired and produced high accuracy bare-earth processed LiDAR data in LAS format and 2.0-meter Digital Elevation Models (DEMs) in ArcGrid format for approximately 874 square miles covering the 3 New Jersey counties of Cape May, Cumberland, and part of Salem that is south and west of the Coastal Area Facility Review Act (CAFRA) line. A footprint of this data set may be viewed in Google Earth at: ftp://ftp.csc.noaa.gov/pub/crs/beachmap/qa_docs/nj/2008_USGS_South_NJ_Lidar_Salem_County.kmz The following were the data acquisition parameters: Technical Acquisition Parameters: Utilizing Leica ALS50 II laser systems which can collect data at laser pulse rates up to 150 KHz, Photo Science flew the project area at 5,000 feet AGL and utilized a 29 degree full-angle field of view. Flights were accomplished nominally at 115 knots (ground speed) with a pulse rate of 73,500 Hz (73.5 KHz), collecting four returns per pulse. The scan rate was be set at 42 Hz. These settings resulted in a swath of 2,586 feet with maximum along track and cross track spacing of 4.62 feet (1.41 meters). Environmental Acquisition Conditions: Leaf-Off, snow free, non-flood conditions, low tide. Low tide: Acquisition was performed within a window of +/- 3 hours from mean low tide for the project area (flight windows that occur twice a day, that are approximately six hours in length but could be longer depending on the lunar cycle). Low tide is defined as when the height of tide is different from Mean Lower Low water by fifty percent (50%) of the tide range or less as predicted by the National Oceanic and Atmospheric Administration (NOAA), National Oceanic Service (NOS) Center for Operational Oceanographic Product and Services (http://www.co-ops.nos.noaa.gov/). All flight lines affected by tide stage were coordinated with predicted tides at existing gauges at Cape May, Ship John Shoal, and Reedy Point. Nominal Pulse density: Average point density is 1.58 points per sq meter Average point spacing is 0.8 meters, or 8 decimeters Calibration procedures: Photo Science has created a significant boresight facility at the Frankfort, KY airport where the Lidar platforms are stationed when not in service. Boresighting at this facility takes place with our Lidar sensors at numerous times throughout the year. Additionally, a mini-calibration site was established at the Millville Municipal Airport at the project site. Additional calibration flights were conducted over this site to ensure accurate determination of the calibration parameters throughout the times of acquisition. GPS: Acquisition for this project was broken into three sub areas with base stations from the NGS database selected near the center of each acquisition area to serve as control for all lifts. Ground based GPS receivers were occupied at these stations during all aerial collection. The published NGS positions of these base stations and raw GPS observation data were used in the kinematic GPS post-processing of all lifts to provide positioning for the point clouds produced for this project. Maximum and mean differential baseline lengths: Nominal Maximum base line distance = 20 Miles Mean base line distance = 11 Miles Geoid Model Used: Geoid 03 was used for all elevation conversions to orthometric heights. Reference System: Horizontal: New Jersey State Plane Coordinate System, 1983 North American Datum, feet Elevation in North American Vertical Datum of 1988 (NAVD88), meters 200804 ground condition Complete Unknown -75.561039 -75.391667 39.692673 39.354456 ISO 19115 Topic Category elevation None Bathymetry/Topography Light Detection and Ranging LiDAR None US New Jersey Salem 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. Acknowledgment of the U.S. Geological Survey would be appreciated for products derived from these data. The following aspects of the LiDAR data was verified during the course of the project processing: -Data accuracy and errors -Anomaly checks through full-feature hillshades and 3-D modeling -Post automated classification Bare-earth verification -Final quality control of deliverable products ensuring integrity, graphical quality All LAS formatted LiDAR data are validated to ensure that data on delivery media is in correct physical format and is readable and correctly georeferenced and projected. Note that LiDAR intensity is not calibrated or normalized. Data completeness and integrity was verified. Compiled to meet 1 m horizontal accuracy Independent accuracy testing was performed by Dewberry using 60 high accuracy quality control checkpoints distributed around Salem, Cumberland, and Cape May County on near level open bare terrain, urban terrain and near level vegetated terrain. Dewberry uses testing procedures consistent with those specified in the National Standard for Spatial Data Accuracy (NSSDA). Target equivalent to 2 ft contours: 0.363 m FVA - Fundamental Vertical Accuracy in open terrain (RMSEz x 1.9600): 0.13 m; CVA - Consolidated Vertical Accuracy (95th Percentile) all categories: 0.16 m; SVA - Supplemental Vertical Accuracy (95th Percentile) in mixed vegetation: 0.18 m; SVA - Supplemental Vertical Accuracy (95th Percentile) in urban: 0.12 m; 13 points are included inside the Salem dataset, the consolidated accuracy (95th Percentile all categories) for these points is 0.12 m. 0.13 National Standard for Spatial Data Accuracy. Using NSSDA standards, this LiDAR dataset was tested 0.13 m fundamental vertical accuracy at 95% confidence level in open terrain using RMSEz x 1.9600, compared to 0.363 m for 2 ft equivalent contour. Photo Science, Inc. Unpublished material digital data hard drive 20080408 20080417 ground condition LiDAR LiDAR points were used to produce the deliverables. Leica software was used in the post processing of the airborne GPS and inertial data that is critical to the positioning of the sensor during all flights. This software suite includes Applanix's PosPac and Waypoint's GrafNav solutions. PosPac provides the smoothed best estimate of trajectory (SBET) that is necessary for Leica's post processor to develop the point cloud from the LiDAR missions. The point cloud is the mathematical three dimensional collection of all returns from all laser pulses as determined from the aerial mission. At this point this data is ready for analysis, classification, and filtering to generate a bare earth surface model in which the above ground features are removed from the data set. The point cloud was manipulated within the Leica software; GeoCue, TerraScan, and TerraModeler software was used for the automated data classification, manual cleanup, and bare earth generation from this data. Project specific macros were used to classify the ground and to remove the side overlap between parallel flight lines. All data was manually reviewed and any remaining artifacts removed using functionality provided by TerraScan and TerraModeler. The project was tiled adhering to the State of New Jersey 5000'x 5000' tile schema and each tile was saved in LAS format 1.1 including GPS time. Note: The Julian date and year written in the LAS header is actually the file creation date and has no connection to the acquisition date. However the GPS time (second of the week) is registered for each point in the LAS file and the week of acquisition can be deduced from the file name which include the GPS week (1474 = week starting 04/06/2008; 1475 = week starting 04/13/2008). When an area includes data from flightlines acquired over two different GPS weeks, separate files for the data captured in each of the weeks are delivered. For example tile B18D14 has data from both weeks; therefore there are two separate files: B18D14_1474.LAS & B18D14_1475.LAS. LiDAR 20080715 LiDAR post-processed data A Terrascan macro was used to classify the Lidar points inside rivers and lakes from class 2 to class 9. This classification was visually inspected by comparing the bare earth class against the hydro breaklines. Then the elevations were converted from feet to meters to meet the final delivery specifications. Lidar post-processed data Hydro breaklines 200807 Lidar classified Dewberry - Geospatial Services Group mailing and physical

8401 Arlington Boulevard

22031 VA 22031 USA 703.849.0100 The NOAA Coastal Services Center (CSC) received files in LAS format. The files contained LiDAR intensity and elevation measurements. CSC performed the following processing on the data to make it available within Digital Coast: 1. The data were converted from New Jersey State Plane coordinates to geographic coordinates. 2. The data were converted from NAVD88 heights to ellipsoid heights using Geoid03. 3. The LAS header fields were sorted by latitude and updated. 201007 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. 20110503 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 Attributes included: x, y, z to two significant digits; intensity and class as integers. Also includes echo return, time stamp, etc. LiDAR point data in LAS 1.1; ASPRS classification scheme: Class 1 - Unclassified/Extracted Features; Class 2 - Bare Earth Ground; Class 9 - water; Class 12 - overlap. 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 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 NOAA, 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) CEM Project Scientist mailing and physical

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