2017 NYS Lidar: Southwest NY (Spring) ny2017_southwest_spring_m9061 eng Dataset EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION EARTH SCIENCE > OCEANS > COASTAL PROCESSES > COASTAL ELEVATION elevation CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > NEW YORK VERTICAL LOCATION > LAND SURFACE LIDAR > Light Detection and Ranging Airplane > Airplane beach erosion 2017 April May Continent > North America > United States Of America > New York >Cattaraugus County Continent > North America > United States Of America > New York >Chautauqua County Product: Calibrated LiDAR version 1.4 .las tiles, classified to bare earth for subsequent derivatives. Geographic Extent: Chautauqua and Cattaraugus County, New York, covering approximately 1,722 square miles. Dataset Description: Chautauqua and Cattaraugus County, New York 2017 Lidar project called for the Planning, Acquisition, processing and derivative products of lidar data to be collected at a nominal pulse spacing (NPS) of 0.7 meter. Project specifications are based on the U.S. Geological Survey National Geospatial Program Base Lidar Specification, Version 1.2. The data was developed based on a horizontal projection/datum of NAD83(2011), Universal Transverse Mercator Zone 17 N, meters and vertical datum of NAVD88 (GEOID12B), meters. Lidar data was delivered as flightline-extent unclassified LAS swaths, as processed Classified LAS 1.4 files, formatted to 1982 individual 1500 m x 1500 m tiles, as tiled bare earth DEMs; all tiled to the same 1500 m x 1500 m schema. Ground Conditions: Lidar was collected in early 2017, while no snow was on the ground and rivers were at or below normal levels. In order to post process the lidar data to meet task order specifications and meet ASPRS vertical accuracy guidelines, New York Office of Information Technology Services established a total of 32 ground control points that were used to calibrate the lidar to known ground locations established throughout the Chautauqua and Cattaraugus County, New York project area. An additional 128 independent accuracy checkpoints, 75 in Bare Earth and Urban landcovers (75 NVA points). 53 in Tall Grass and Brushland/Low Trees categories (53 VVA points) were used to assess the vertical accuracy of the data. These checkpoints were not used to calibrate or post process the data. The NOAA Office for Coastal Management (OCM) downloaded 1982 laz files from this USGS site: ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/USGS_LPC_NY_Southwest_East_2017_LAS_2018/ and processed the data to the Data Access Viewer (DAV) and to https. Hydro breaklines are also available. These data are available for download at the link provided in the URL section of this metadata record. Please note that these products have not been reviewed by the NOAA Office for Coastal Management (OCM) and any conclusions drawn from the analysis of this information are not the responsibility of NOAA or OCM. OCM Partners OCM Partners https://www.fisheries.noaa.gov/inport/item/59075 https://www.fisheries.noaa.gov/inport/item/49401 https://www.fisheries.noaa.gov/inport/item/59014 northlimit=42.581543; eastlimit=-78.718362; southlimit=41.985952; westlimit=-79.768477; 2017-04-17 2017-04-18 2017-04-23 2017-04-24 2017-05-08 2017-05-09 None