gov.noaa.csc.maps:ny2007_niagara Federal Emergency Management Agency (FEMA) 200808 Charleston, SC NOAA's Ocean Service (NOS), Coastal Services Center (CSC) http://www.csc.noaa.gov/lidar The spring 2007 LiDAR Flight Acquisition required the collection of approximately 526 square miles of Niagara County and approximately 30 square miles of the corridors of Erie County. Total, approximately 555 square miles were collected at a nominal point spacing of 1.4 meters and based on the Sanborn FEMA compliant LiDAR product specification. The lidar data was collected from Jan 3 2007-May 9 2007. Multiple returns were recorded for each laser pulse along with an intensity value for each return. The lidar points in this data set are the last return data, it is not a bare earth data set and the points have not been classified. LIDAR data is remotely sensed high-resolution elevation data collected by an airborne collection platform. Using a combination of laser range finding, GPS positioning and inertial measurement technologies; LIDAR instruments are able to make highly detailed Digital Elevation Models (DEM) of the earth's terrain, man-made structures and vegetation. This data was collected at a resolution to aid in coastal management decisions including flood plain analysis and mapping. LIDAR data is used for 3D visualization, elevation based analysis and for feature extraction. Reflective surface data represents the DEM created by laser energy reflected from the first surface encountered by the laser pulse. Some energy may continue beyond this initial surface to be reflected by a subsequent surface as represented by the Last Return data. Intensity information is captured from the Reflective Surface pulse and indicates the relative energy returned to the sensor as compared to the energy transmitted. The Intensity image is not calibrated or normalized but indicates differences in energy absorption due to the interaction of the surface materials with laser energy at the wavelength transmitted by the sensor. For more information about this data, please refer to the Final Report for Erie County Corridors & Niagara County at: ftp://ftp.csc.noaa.gov/pub/crs/beachmap/qa_docs/ny/erie/Final_LiDAR_Report_Niagara_Erie.doc 20070103 20070509 Ground condition Complete Unknown -79.109826 -78.411653 43.391887 42.999853 ISO 19115 Topic Category Elevation None Bathymetry/Topography Elevation LiDAR Topography Digital Elevation Model DEM Surface Model None United States New York Niagara County Lake Ontario 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. Jamie Young Sanborn Mapping Company, Inc. General Manager Mailing and physical

1935 Jamboree Drive Suite 100

Colorado Springs CO 80920 USA (719) 264-5602 jyoung@sanborn.com Acknowledgement of the Federal Emergency Management Agency (FEMA), Sanborn Map Company, Inc, and Medina Consultants would be appreciated in products derived from these data. Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.4.1420 All LAS formatted LIDAR data are validated using commercial GIS software to ensure proper formatting and loading before delivery. This validation procedure ensures that data on delivery media is in correct physical format and is readable. LIDAR raster data is visually inspected for completeness to ensure that any gaps between flight lines or loss of signal represents less than 5% of required collection area. LIDAR is self-illuminating and has minimal cloud penetration capability. Water vapor in steam plumes or particulates in smoke may cause reflection of LIDAR signals and loss of elevation information beneath these plumes. Glass structures and roofs may appear transparent to the LIDAR signal and therefore may not register on the reflective surface. Some asphalt formulations have been shown to absorb topographic LIDAR wavelength energy resulting in "pitting" of roof surfaces using this material. Contracted to meet 1 meter (RMSE) horizontal accuracy. Data tested to have vertical accuracy of 10.9 cm RMSE. Sanborn Map Company, Inc. 2008 Hard drive 2008 Ground condition LIDAR Raw spatial elevation information 1. Fly lidar with Optech 2050 at nominal 1.4 m point spacing. 2. Process Airborne GPS using the GrafNAV V7.50 software by Waypoint Consulting of Calgary, Alberta, Canada. 3. Process IMU data using the PosPac V4.2 software by Applanix Corporation of Richmond Hill, Ontario, Canada. 4. Reflective Surface Generation using the ASL Post Processor software by Leica Geosystems software of Terrasolid Limited of Helsinki, Finland. 2007 The NOAA Coastal Services Center (CSC) received the files in ASCII format. The files contained Lidar elevation and intensity measurements. The data were in State Plane New York West, FIPS 3103 coordinates, horizontal units of measure of US survey feet and in NAVD88 Geoid 03 vertical datum with vertical units of measure of feet. CSC performed the following processing to the data to make it available within the Digital Coast: 1. The data were converted from NY State Plane coordinates to geographic coordinates. 2. The data were converted from NAVD88 (orthometric) heights to GRS80 (ellipsoid) heights using Geoid 03. 3. The LAS data were sorted by latitude and the headers were updated. 4. The data were filtered to remove outliers. 20090325 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 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 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 the Federal Emergency Management Agency (FEMA), Sanborn Map Company, Inc, Medina Consultants, the Coastal Services Center or its partners. This data can be obtained on-line at the following URL: http://www.csc.noaa.gov/lidar 20090418 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 FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998