58332
2018 USGS Lidar DEM: Florida Panhandle
fl2018_panhandle_dem_m8942_metadata
Data Set
Published / External
49404
DEMs - partner (no harvest)
Project
Completed
2018-07
Product: These are Digital Elevation Model (DEM) data for FL Panhandle as part of the required deliverables for the 2018 FL Panhandle Lidar project. Class 2 (ground) lidar points in conjunction with the hydro breaklines were used to create a 1 meter hydro-flattened Raster DEM. This delivery consists of 2859 tiles.
Geographic Extent: Bay, Calhoun, Covington, Decatur, Dixie, Escambia, Franklin, Gadsden, Geneva, Grady, Gulf, Holmes, Houston, Jackson, Jefferson, Lafayette, Leon, Liberty, Madison, Okaloosa, Santa Rosa, Seminole, Taylor, Thomas, Walton, Wakulla, Walton, and Washington counties, Florida, covering approximately 5,952 square miles.
Dataset Description: FL Panhandle 2018 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 1.3. The data was developed based on a horizontal projection/datum of NAD83 (2011), Albers Equal Area, meters and vertical datum of NAVD88 (GEOID12B), meters. Lidar data was delivered as processed Classified LAS 1.4 files, formatted to 16,768 individual 1000 m x 1000 m tiles, as tiled Intensity Imagery, and as tiled bare earth DEMs; all tiled to the same 1000 m x 1000 m schema.
Ground Conditions: Lidar was collected in early 2018, 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, Airborne Imaging used 30 control points (16 FL DOT FPRN stations, 5 NGS monuments, and 9 newly established base stations) to control the lidar acquistion and tie the lidar to known ground locations established throughout the FL Panhandle project area. Over 15,000 GNSS kinematic points were used by Airborne Imaging to verify accuracy of the calibarted lidar data. An additional full AOI will be tested with 262 independent accuracy checkpoints, 152 in Bare Earth and Urban landcovers (152 NVA points), 110 in Tall Grass and Brushland/Low Trees categories (110 VVA points), but interim accuracy of Block 1 was tested with 22 in Bare Earth and Urban landcovers (22 NVA points), 12 in Tall Grass and Brushland/Low Trees categories (12 VVA points), were used to assess the vertical accuracy of the Block 1 data. These checkpoints were not used to calibrate or post process the data.
In addition to these bare earth Digital Elevation Model (DEM) data, the lidar point data that these DEM data were created from, are also available. These data and the breaklines are available for download at the links 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 and Raster DEM. The purpose of these lidar data was to produce high accuracy 3D hydro-flattened Digital Elevation Model (DEM) 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 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
Required Vertical Accuracy = 19.6 cm NVA
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 > FLORIDA
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
raster digital data
Any conclusions drawn from the analysis of this information are not the responsibility of Dewberry, the USGS, NOAA, the Office for Coastal Management or its partners.
Dewberry
Data Steward
2019
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
2019
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
2019
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
2019
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
-87.025182
-83.253592
31.011393
29.578947
Range
2018-03-31
2018-05-10
Projected
EPSG:6350
NAD83(2011) / Conus Albers
NAD83 (National Spatial Reference System 2011)
GRS 1980
6378137
298.257222101
NAD83(2011)
Conus Albers
Albers Equal Area
Latitude of false origin
23° 0' 0" N
Longitude of false origin
96° 0' 0" W
Latitude of 1st standard parallel
29° 30' 0" N
Longitude of 2nd standard parallel
45° 30' 0" N
Easting at false origin
0
metre
Northing at false origin
0
metre
1
Easting
X
metre
east
2
Northing
Y
metre
north
Vertical
EPSG:5703
NAVD88 height
North American Vertical Datum 1988
1
Gravity-related height
H
metre
up
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.
2019-12-16
https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=8942
2019
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
2019-12-16
https://noaa-nos-coastal-lidar-pds.s3.us-east-1.amazonaws.com/dem/FL_Panhandle_DEM_2018_8942/index.html
2019
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/geoid18/8945/supplemental/fl2018_panhandle_m8945.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=8945
Online Resource
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/geoid18/8945/breaklines/
Online Resource
Link to the breakines.
https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/8945/supplemental/3143_NWFWMD_FL_PanHandle_Aquisition_Report.pdf
Dataset report
Online Resource
PDF
Link to data set report.
https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/8945/supplemental/FL_PanHandle_Aquisition_Control_Report.pdf
Dataset report
Online Resource
PDF
Link to data set report.
https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/8945/supplemental/FL_PanHandle_Checkpoints_Survey_Report.pdf
Dataset report
Online Resource
PDF
Link to data set report.
https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/8945/supplemental/FL_Panhandle_Lidar_Project_Report_20190601.pdf
Dataset report
Online Resource
PDF
Link to data set report.
The project specifications require the accuracy (ACCz) of the derived DEM be calculated and reported in two ways:
1. The required NVA is: 19.6 cm at a 95% confidence level, derived according to NSSDA, i.e., based on RMSE of 10 cm in the “bare earth” and "urban" land cover classes. This is a required accuracy. The NVA was tested with 127 checkpoints located in bare earth and urban (non-vegetated) areas.
2. Vegetated Vertical Accuracy (VVA): VVA shall be reported for "brushlands/low trees" and "tall weeds/crops" land cover classes. The target VVA is: 30cm at the 95th percentile, derived according to ASPRS Guidelines, Vertical Accuracy Reporting for Lidar Data, i.e., based on the 95th percentile error in all vegetated land cover classes combined. This is a target accuracy.
Tested 0.132 meters NVA at a 95% confidence level using RMSE(z) x 1.9600 as defined by the National Standards for Spatial Data Accuracy (NSSDA). RMSEz is 6.7 cm. The NVA of the DEM was calculated using 127 independent checkpoints located in the Bare Earth and Urban land cover categories.
Tested 0.145 meters VVA was calculated using 89 checkpoints located in the Brushlands and Low Trees and Tall Weeds and Crops land cover categories at the 95th percentile, derived according to ASPRS Guidelines, Vertical Accuracy Reporting for Lidar Data. Tested against the DEM.
The VVA was tested with 89 checkpoints located in tall weeds/crops and brushlands/low trees (vegetated) areas. The checkpoints were distributed throughout the project area and were surveyed using GPS techniques. See survey report for additional survey methodologies. AccuracyZ has been 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.
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.
1
Hydro Flattened Raster DEM Process: 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.
2018-07-15T00:00:00
2
The NOAA Office for Coastal Management (OCM) received this data set from the Northwest Florida Water Management District (NWFWMD). The total number of files provided was 16,802. The data were in img format.
The data were in US Albers (NAD83 (2011)) meters coordinates and NAVD88 (Geoid12B) elevations in meters. The bare earth raster files were at a 1 meter grid spacing.
OCM performed the following processing on the data for Digital Coast storage and provisioning purposes:
1. Used an internal script to assign the EPSG codes (Horiz - 6360, Vert - 5703) and convert from img to GeoTiff format.
2. Copied to the files to https.
2019-12-16T00:00:00
Organization
Office for Coastal Management
OCM
2234 South Hobson Avenue
Charleston
SC
29405-2413
https://www.coast.noaa.gov/
58298
Data Set
2018 USGS Lidar: Florida Panhandle
Cross Reference
gov.noaa.nmfs.inport:58332
Rebecca Mataosky
2019-12-16T11:00:53
Kirk Waters
2024-01-10T19:10:09
2024-01-10
OCM Partners
OCMP
1002
Public
No
2022-03-16
1 Year
2023-03-16