64733 ny2017_frank_st_lawr_dem_m9315_metadata Data Set Published / External 49404 DEMs - partner (no harvest) Project Completed 2017-10-13 Product: These are Digital Elevation Model (DEM) data for Franklin, Lewis, Madison, Oneida, Onondaga, Oswego, and St. Lawrence Counties, New York as part of the required deliverables for the New York 2016 Lidar project. Class 2 (ground) lidar points in conjunction with the hydro breaklines were used to create a 1-meter hydro-flattened raster DEM. Geographic Extent: Seven counties in New York, covering approximately 4,474 total square miles. East Zone AOI is Franklin and St. Lawrence Counties, Central Zone AOI is Lewis, Madison, Oneida, Onondaga, and Oswego Counties. Dataset Description: New York FEMA 2016 QL2 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 meters. Project specifications are based on the U.S. Geological Survey National Geospatial Program Base Lidar Specification, Version 1.2. Lidar data was delivered as flightline-extent unclassified LAS swaths, as processed classified LAS 1.4 files formatted to 4,597 individual 1,500-meter x 1,500-meter tiles, as tiled intensity imagery, and as tiled bare earth DEMs; all tiled to the same 1,500-meter x 1,500-meter schema. Continuous breaklines were produced in Esri file geodatabase format. Contours with a 1-foot interval were produced in Esri file geodatabase format, tiled to the same 1,500-meter x 1,500-meter schema. Ground Conditions: Lidar was collected in winter/spring of 2016/2017, 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, Quantum Spatial, Inc. established a total of 76 ground control points that were used to calibrate the lidar to known ground locations established throughout the New York East Zone (Franklin and St. Lawrence Counties) project area. An additional 71 independent accuracy checkpoints, 71 in Bare Earth and Urban landcovers (59 NVA points), 59 in Forested, Brushland/Trees, and Tall Weeds/Crops categories (59 VVA points), were used to assess the vertical accuracy of the data. Quantum Spatial, Inc. established a total of 30 ground control points that were used to calibrate the lidar to known ground locations established throughout the New York Central Zone (Lewis, Madison, Oneida, Onondaga, and Oswego Counties) project area. An additional 68 independent accuracy checkpoints, 43 in Bare Earth and Urban landcovers (43 NVA points), 25 in Forested, Brushland/Trees, and Tall Weeds/Crops categories (25 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 the 5948 DEM files (4597 files for the East Zone AOI and 1351 files for the Central Zone AOI) from the New York State GIS site. The data were downloaded from these URLs: ftp://ftp.gis.ny.gov/elevation/DEM/FEMA_FranklinStLawrence2016/ and ftp://ftp.gis.ny.gov/elevation/DEM/FEMA_OneidaSubbasin2016/. The data were processed to the Data Access Viewer (DAV) and http. In addition to these bare earth Digital Elevation Model (DEM) data, the lidar point data that these DEM data were created from and the breaklines are also available. These data are available for custom download at the link provided in the URL section of this metadata record. To acquire detailed surface elevation data for use in conservation planning, design, research, floodplain mapping, dam safety assessments and elevation modeling, etc. Classified LAS files are used to show the manually reviewed bare earth surface. This allows the user to create intensity images, breaklines, raster DEMs, and contours. The purpose of these lidar data was to produce high accuracy 3D hydro-flattened digital elevation models (DEMs) with a 1-meter cell size. These raw lidar point cloud data were used to create classified lidar LAS files, intensity images, 3D breaklines, hydro-flattened DEMs, and contours as necessary. Raster File Type = IMG Bit Depth/Pixel Type = 32-bit float Raster Cell Size = 1.0 Meter Interpolation or Resampling Technique = Triangulated Irregular Network (TIN), Linear Interpolation, Proprietary Theme Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION Theme ISO 19115 Topic Category elevation Spatial Global Change Master Directory (GCMD) Location Keywords CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA Spatial Global Change Master Directory (GCMD) Location Keywords CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > NEW YORK Spatial Global Change Master Directory (GCMD) Location Keywords VERTICAL LOCATION > LAND SURFACE Instrument Global Change Master Directory (GCMD) Instrument Keywords LIDAR > Light Detection and Ranging Platform Global Change Master Directory (GCMD) Platform Keywords Airplane > Airplane Platform Global Change Master Directory (GCMD) Platform Keywords DEM > Digital Elevation Model Theme DEM Office for Coastal Management Charleston SC Data Set Elevation None Planned Model (digital) Any conclusions drawn from the analysis of this information are not the responsibility of NOAA, the Office for Coastal Management or its partners. Quantum Spatial, Inc. Data Steward 2021 Organization NOAA Office for Coastal Management NOAA/OCM coastal.info@noaa.gov 2234 South Hobson Ave Charleston SC 29405-2413 (843) 740-1202 https://coast.noaa.gov NOAA Office for Coastal Management Home Page Online Resource Distributor 2021 Organization NOAA Office for Coastal Management NOAA/OCM coastal.info@noaa.gov 2234 South Hobson Ave Charleston SC 29405-2413 (843) 740-1202 https://coast.noaa.gov NOAA Office for Coastal Management Home Page Online Resource Metadata Contact 2021 Organization NOAA Office for Coastal Management NOAA/OCM coastal.info@noaa.gov 2234 South Hobson Ave Charleston SC 29405-2413 (843) 740-1202 https://coast.noaa.gov NOAA Office for Coastal Management Home Page Online Resource Point of Contact 2021 Organization NOAA Office for Coastal Management NOAA/OCM coastal.info@noaa.gov 2234 South Hobson Ave Charleston SC 29405-2413 (843) 740-1202 https://coast.noaa.gov NOAA Office for Coastal Management Home Page Online Resource Ground Condition -76.384505 -73.951082 45.018775 42.773896 Range 2016-11-12 2017-05-12 East Zone (Franklin and St. Lawrence Counties) Range 2016-11-14 2017-04-23 Central Zone (Lewis, Madison, Oneida, Onondaga, Oswego Counties) Vertical EPSG:5703 NAVD88 height North American Vertical Datum 1988 1 Gravity-related height H metre up Projected EPSG:6536 NAD83(2011) / New York East NAD83 (National Spatial Reference System 2011) GRS 1980 NAD83(2011) 1 Easting X m east 2 Northing Y m North Projected EPSG:6534 NAD83(2011) / New York Central NAD83 (National Spatial Reference System 2011) GRS 1980 NAD83(2011) 1 Easting X metre east 2 Northing Y metre north Unclassified Data is available online for bulk and custom downloads. 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. https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=9315/details/9315 2021 Organization NOAA Office for Coastal Management Customized Download Create custom data files by choosing data area, map projection, file format, etc. A new metadata will be produced to reflect your request using this record as a base. Zip Zip https://noaa-nos-coastal-lidar-pds.s3.us-east-1.amazonaws.com/dem/NY_Franklin_StLawr_DEM_2017_9315/index.html 2021 Organization NOAA Office for Coastal Management Bulk Download Bulk download of data files in the original coordinate system. GeoTIFF GeoTIFF https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9321/supplemental/ny2017_frank_stlwr_m9321.kmz Browse Graphic Browse Graphic KML This graphic displays the footprint for this lidar data set. https://coast.noaa.gov/ NOAA's Office for Coastal Management (OCM) website Online Resource HTML Information on the NOAA Office for Coastal Management (OCM) https://coast.noaa.gov/dataviewer/ NOAA's Office for Coastal Management (OCM) Data Access Viewer (DAV) Online Resource HTML The Data Access Viewer (DAV) allows a user to search for and download elevation, imagery, and land cover data for the coastal U.S. and its territories. The data, hosted by the NOAA Office for Coastal Management, can be customized and requested for free download through a checkout interface. An email provides a link to the customized data, while the original data set is available through a link within the viewer. https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=9321/details/9321 Custom Point Download Online Resource Zip Link to custom download, from the Data Access Viewer (DAV), the lidar point data from which these raster Digital Elevation Model (DEM) data were created. https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9321/breaklines/ Hydro Breaklines Online Resource Zip Link to the hydro breaklines. https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9321/supplemental/29614_NY_FEMA_FOCUS.pdf Quantum Spatial FOCUS Report - Central Zone Online Resource pdf Link to the Quantum Spatial FOCUS report for the Central Zone project area. https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9321/supplemental/29614_NY_FEMA_FOCUS_on_Accuracy.pdf Quantum Spatial FOCUS on Accuracy Report - Central Zone Online Resource pdf Link to the Quantum Spatial FOCUS on Accuracy report for the Central Zone project area. https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9321/supplemental/29614_NY_FEMA_FOCUS_on_Accuracy_NYEast.pdf Quantum Spatial FOCUS on Accuracy Report - East Zone Online Resource pdf Link to the Quantum Spatial FOCUS on Accuracy Report for the East Zone project area. https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9321/supplemental/29614_NY_FEMA_FOCUS_on_NYEast.pdf Quantum Spatial FOCUS Report - East Zone Online Resource pdf Link to the Quantum Spatial FOCUS Report for the East Zone project area. https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9321/supplemental/29614_NY_ProjectReport.pdf Project Report Online Resource pdf Link to the project report. https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9321/supplemental/29614_NY_ProjectReportAppendices.pdf Project Report Appendices Online Resource pdf Link to the project report appendices. https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9321/supplemental/NY_FEMA_R2_LiDAR_2016_D17_Survey_Report.pdf Survey Report Online Resource pdf Link to the survey report. East Zone (Franklin, St. Lawrence Counties) Project specifications require the accuracy (ACCz) of the derived DEM be calculated and reported in two ways: 1. Required NVA : 19.6 cm at a 95% confidence level, derived according to NSSDA, i.e., based on RMSE of 10 cm in bare earth and urban land cover classes. This is a required accuracy. NVA was tested with 71 checkpoints located in bare earth and urban (non-vegetated) areas; points BE03 and UA01 were excluded as they fell outside project AOI. 2. Vegetated Vertical Accuracy (VVA): VVA reported for forested, brushland/trees, and tall weeds/crops land cover classes. Target VVA: 29.4 cm at the 95th percentile, derived according to ASPRS Guidelines, Vertical Accuracy Reporting for Lidar Data, i.e., based on 95th percentile error in all vegetated land cover classes combined. This is a target accuracy. VVA was tested with 58 of 59 checkpoints located in forested, brushland/trees, and tall weeds/crops (vegetated) areas; point F023 excluded as it fell outside AOI. Checkpoints were distributed throughout project area and were surveyed using GPS techniques. See survey report for additional survey methodologies. AccuracyZ tested to meet 19.6 cm or better Non-Vegetated Vertical Accuracy at 95% confidence level using RMSE(z) x 1.9600 as defined by the National Standards for Spatial Data Accuracy (NSSDA); assessed and reported using National Digital Elevation Program (NDEP)/ASRPS Guidelines. Tested 0.0827 meters NVA at a 95% confidence level (4.2 cm RMSE) using RMSE(z) x 1.9600 as defined by National Standards for Spatial Data Accuracy (NSSDA). Tested 0.2549 meters VVA calculated using 58 checkpoints located in Forested, Brushland/Trees, and Tall Weeds/Crops land cover categories at 95th percentile, derived according to ASPRS Guidelines, Vertical Accuracy Reporting for Lidar Data. Tested against DEM. Central Zone (Lewis, Madison, Oneida, Onondaga, Oswego Counties) The project specifications require accuracy (ACCz) of the derived DEM be calculated and reported in two ways: 1. Required NVA : 19.6 cm at 95% confidence level, derived according to NSSDA, i.e., based on RMSE of 10 cm in bare earth and urban land cover classes. This is a required accuracy. NVA was tested with 41 of 43 checkpoints located in bare earth and urban (non-vegetated) areas; points BE03 and UA01 excluded as they fell outside project AOI. 2. Vegetated Vertical Accuracy (VVA): VVA reported for forested, brushland/trees, and tall weeds/crops land cover classes. The target VVA: 29.4 cm at 95th percentile, derived according to ASPRS Guidelines, Vertical Accuracy Reporting for Lidar Data, i.e., based on 95th percentile error in all vegetated land cover classes combined. This is a target accuracy. The VVA tested with 21 of 25 checkpoints located in forested, brushland/trees, and tall weeds/crops (vegetated) areas; points FO01, FO02, FO03, FO11 and FO16 excluded as they fell outside the AOI. The checkpoints were distributed throughout project area and were surveyed using GPS techniques. See survey report for additional survey methodologies. AccuracyZ tested to meet 19.6 cm or better Non-Vegetated Vertical Accuracy at 95% confidence level using RMSE(z) x 1.9600 as defined by the National Standards for Spatial Data Accuracy (NSSDA); assessed and reported using National Digital Elevation Program (NDEP)/ASRPS Guidelines. Tested 0.1030 meters NVA at 95% confidence level (5.3 cm RMSE) using RMSE(z) x 1.9600 as defined by the National Standards for Spatial Data Accuracy (NSSDA). Tested 0.1182 meters VVA calculated using 23 checkpoints located in Forested, Brushland/Trees, and Tall Weeds/Crops land cover categories at 95th percentile, derived according to ASPRS Guidelines, Vertical Accuracy Reporting for Lidar Data. Tested against DEM. Datasets contain complete coverage of tiles. No points have been removed or excluded. A visual qualitative assessment was performed to ensure data completeness. There are no void areas or missing data. The raw point cloud is of good quality and data passes Non-Vegetated Vertical Accuracy specifications. Data covers the entire area specified for this project. Data were collected and processed by Quantum Spatial, Inc. for FEMA. The DEM data were downloaded from the New York State GIS ftp site by the NOAA Office for Coastal Management (OCM) where the data were processed to make it available for custom download from the Data Access Viewer (DAV) and bulk download from https. New York State GIS website Quantum Spatial, Inc. 1 Dataset Description: New York FEMA 2016 QL2 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 meters. Project specifications are based on the U.S. Geological Survey National Geospatial Program Base Lidar Specification, Version 1.2. The data for counties in the East Zone AOI were developed based on a horizontal projection/datum of NAD83 (2011), State Plane New York East Zone, meters and vertical datum of NAVD88 (GEOID12B), meters. The data for counties in the Central Zone AOI were developed based on a horizontal projection/datum of NAD83 (2011), State Plane New York Central Zone, 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 5948 (4597 files for the East Zone AOI and 1351 files for the Central Zone AOI) individual 1,500-meter x 1,500-meter tiles, as tiled intensity imagery, and as tiled bare earth DEMs; all tiled to the same 1,500-meter x 1,500-meter schema. Continuous breaklines were produced in Esri file geodatabase format. Contours with a 1-foot interval were produced in Esri file geodatabase format, tiled to the same 1,500-meter x 1,500-meter schema. Ground Conditions: Lidar was collected in winter/spring of 2016/2017, while no snow was on the ground and rivers were at or below normal levels. 2 Hydro-Flattened Raster DEM Processing: Class 2 (Ground) lidar points in conjunction with the hydro breaklines were used to create a 1 meter hydro-flattened raster DEM. Using automated scripting routines within ArcMap, an ERDAS Imagine .IMG file was created for each tile. Each surface is reviewed using Global Mapper to check for any surface anomalies or incorrect elevations found within the surface. 2017-01-01T00:00:00 3 The NOAA Office for Coastal Management (OCM) downloaded 5948 (4597 files for the East Zone AOI and 1351 files for the Central Zone AOI) digital elevation model (DEM) files in img format from the NY State GIS ftp site (ftp://ftp.gis.ny.gov/elevation/DEM/FEMA_FranklinStLawrence2016/ and ftp://ftp.gis.ny.gov/elevation/DEM/FEMA_OneidaSubbasin2016/) . The bare earth raster files were at a 1 m grid spacing. The data were in NY State Plane East (Franklin and St. Lawrence) and NY State Plane Central (Oneida Subbasin) NAD83 (2011), meters coordinates and NAVD88 (Geoid 12B) elevations in meters. OCM assigned the appropriate EPSG codes (Horiz - 6534 (Oneida Subbasin) and 6536 (Franklin and St.Lawrence), Vert - 5703) and copied the raster files to https for Digital Coast storage and provisioning purposes. 2021-06-04T00:00:00 Organization Office for Coastal Management OCM https://ror.org/05v14bq57 2234 South Hobson Avenue Charleston SC 29405-2413 https://www.coast.noaa.gov/ 64745 Data Set Cross Reference gov.noaa.nmfs.inport:64733 Rebecca Mataosky 2021-06-04T15:56:29 SysAdmin InPortAdmin 2026-03-04T19:17:17 2024-01-10 OCM Partners OCMP 1002 Public No No 2022-03-16 1 Year 2023-03-16