2018 USGS/NRCS Lidar DEM, Southwest FL
Data Set (DS) | OCM Partners (OCMP)GUID: gov.noaa.nmfs.inport:59010 | Updated: January 10, 2024 | Published / External
Item Identification
Title: | 2018 USGS/NRCS Lidar DEM, Southwest FL |
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Short Name: | FL_SW_Digital_Elevation_Model m9041.xml |
Status: | Completed |
Publication Date: | 2019 |
Abstract: |
The Digital Elevation Model (DEM) dataset consists of tiled lidar DEM Images. Each file contains a raster image of the DEM. The Geographical Extent of this dataset extends to the entirety of the Southwest FL Lidar boundary delivery, approximately 2,347 square miles of the AOIs. |
Purpose: |
The USGS/NRCS contracted Digital Aerial Solutions, LLC to obtain professional services related to the planning, acquisition and development of Light Detection and Ranging (lidar) data and derivative products. The task order is for a QL1 Lidar survey to be collected over Lee and Collier county in FL. The deliverable products would be used by the USGS/NRCS for conservation planning, design, research, floodplain mapping, wetlands identification, dam safety assessments, hydrologic modeling, and other environmental purposes. |
Supplemental Information: |
All Lidar data and associated products were acquired, calibrated, and used in the creation of lidar derived products by Digital Aerial Solutions, LLC. Raster File Type = GeoTiff Bit Depth/Pixel Type = 32-bit float Raster Cell Size = 0.5 Meter Interpolation or Resampling Technique = Bilnear Interpolation Required Vertical Accuracy = 19.6 cm NVA |
Keywords
Theme Keywords
Thesaurus | Keyword |
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Global Change Master Directory (GCMD) Science Keywords |
EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION
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ISO 19115 Topic Category |
elevation
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UNCONTROLLED | |
None | DEM |
None | Hydrology |
None | Intensity Image |
Spatial Keywords
Thesaurus | Keyword |
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Global Change Master Directory (GCMD) Location Keywords |
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA
|
Global Change Master Directory (GCMD) Location Keywords |
VERTICAL LOCATION > LAND SURFACE
|
Instrument Keywords
Thesaurus | Keyword |
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Global Change Master Directory (GCMD) Instrument Keywords |
LIDAR > Light Detection and Ranging
|
Platform Keywords
Thesaurus | Keyword |
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Global Change Master Directory (GCMD) Platform Keywords |
Airplane > Airplane
|
Global Change Master Directory (GCMD) Platform Keywords |
DEM > Digital Elevation Model
|
Physical Location
Organization: | Office for Coastal Management |
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City: | Charleston |
State/Province: | SC |
Data Set Information
Data Set Scope Code: | Data Set |
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Data Set Type: | Elevation |
Maintenance Frequency: | As Needed |
Data Presentation Form: | GeoTiff |
Entity Attribute Detail Citation: |
None |
Distribution Liability: |
*** None Any conclusions drawn from the analysis of this information are not the responsibility of NOAA, the Office for Coastal Management or its partners |
Data Set Credit: | *** U.S. Geological Survey |
Support Roles
Data Steward
Date Effective From: | 2020 |
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Date Effective To: | |
Contact (Organization): | NOAA Office for Coastal Management (NOAA/OCM) |
Address: |
2234 South Hobson Ave Charleston, SC 29405-2413 |
Email Address: | coastal.info@noaa.gov |
Phone: | (843) 740-1202 |
URL: | https://coast.noaa.gov |
Distributor
Date Effective From: | 2020 |
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Date Effective To: | |
Contact (Organization): | NOAA Office for Coastal Management (NOAA/OCM) |
Address: |
2234 South Hobson Ave Charleston, SC 29405-2413 |
Email Address: | coastal.info@noaa.gov |
Phone: | (843) 740-1202 |
URL: | https://coast.noaa.gov |
Metadata Contact
Date Effective From: | 2020 |
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Date Effective To: | |
Contact (Organization): | NOAA Office for Coastal Management (NOAA/OCM) |
Address: |
2234 South Hobson Ave Charleston, SC 29405-2413 |
Email Address: | coastal.info@noaa.gov |
Phone: | (843) 740-1202 |
URL: | https://coast.noaa.gov |
Point of Contact
Date Effective From: | 2020 |
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Date Effective To: | |
Contact (Organization): | NOAA Office for Coastal Management (NOAA/OCM) |
Address: |
2234 South Hobson Ave Charleston, SC 29405-2413 |
Email Address: | coastal.info@noaa.gov |
Phone: | (843) 740-1202 |
URL: | https://coast.noaa.gov |
Extents
Currentness Reference: | Ground Condition |
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Extent Group 1
Extent Group 1 / Geographic Area 1
W° Bound: | -82.28745 | |
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E° Bound: | -81.250146 | |
N° Bound: | 26.79471 | |
S° Bound: | 25.821722 |
Extent Group 1 / Time Frame 1
Time Frame Type: | Range |
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Start: | 2018-05-08 |
End: | 2019-03-01 |
Access Information
Security Class: | Unclassified |
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Data Access Procedure: |
Data is available online for bulk or custom downloads |
Data Access Constraints: |
None |
Data Use Constraints: |
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. |
Distribution Information
Distribution 1
Start Date: | 2020-03-10 |
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End Date: | Present |
Download URL: | https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=9041 |
Distributor: | NOAA Office for Coastal Management (NOAA/OCM) (2020 - Present) |
File Name: | Customized Download |
Description: |
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. |
File Type (Deprecated): | Zip |
Compression: | Zip |
Distribution 2
Start Date: | 2020-03-10 |
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End Date: | Present |
Download URL: | https://noaa-nos-coastal-lidar-pds.s3.us-east-1.amazonaws.com/dem/USGS_FL_Southeast_2018_9041/index.html |
Distributor: | NOAA Office for Coastal Management (NOAA/OCM) (2020 - Present) |
File Name: | Bulk Download |
Description: |
Bulk download of data files in the original coordinate system. |
File Type (Deprecated): | GeoTIFF |
Distribution Format: | GeoTIFF |
URLs
URL 1
URL: | https://coast.noaa.gov/ |
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Name: | NOAA's Office for Coastal Management (OCM) website |
URL Type: |
Online Resource
|
File Resource Format: | HTML |
Description: |
Information on the NOAA Office for Coastal Management (OCM) |
URL 2
URL: | https://coast.noaa.gov/dataviewer/ |
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Name: | NOAA's Office for Coastal Management (OCM) Data Access Viewer (DAV) |
URL Type: |
Online Resource
|
File Resource Format: | HTML |
Description: |
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. |
Technical Environment
Description: |
Inertial Explorer ver: 8.6; Leica CloudPro Ver:1.2.1; GeoCue Ver: 2014.1.21.4; Microstation V8i; Terresolid ver: 2019; LP360 ver: 2014.1.51.1; Arcmap ver: 10.4; Global Mapper ver: 16 |
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Data Quality
Horizontal Positional Accuracy: |
Horizontal error in lidar derived elevation data is largely a function of positional error as derived from the Global Navigation Satellite System (GNSS), attitude (angular orientation) error (as derived from the INS) and flying altitude; and can be estimated based on these paraMeters. Qualitative value: 0.783, Test that produced the valued: This data set was produced to meet ASPRS “Positional Accuracy Standards for Digital Geospatial Data” (2014) for a 0.226 Meters RMSEx/RMSEy Horizontal Accuracy Class which equates to Positional Horizontal Accuracy =+/- 0.783 Meters at a 95% confidence level Estimated LiDAR Horizontal Error Per Point. |
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Vertical Positional Accuracy: |
Vertical Accuracy of the bare-earth lidar data was assessed and reported in accordance with the ASPRS Positional Accuracy Standards for Digital Geospatial Data; One-hundred Thirty-nine (139) surveyed points were measured for the purpose of assessing the accuracy of the FL Southwest LiDAR data (79 NVA + 60 VVA). Both data sets, Lidar and Digital Elevation Models (DEMs) have been tested for there individual vertical accuracy levels. The Lidar was tested by using interpolation while the DEMs where tested by extracting the elevation of a pixel containing the checkpoint. All DEM Vertical accuracy results are reported in the DEM Metadata reports while this project wide Metadata file is reporting the vertical accuracy results from the the source Lidar. Required Non Vegetated Vertical Accuracy (NVA): 0.196 Meters. Required Vegetated Vertical Accuracy (VVA): 0.294 Meters.Qualitative value:0.179 0.229, Test that produced the value: The NVA of the Digital Elevation Model was calculated against TINs derived from the final calibrated and controlled swath data using 79 NVA checkpoints located in Bare Earth land cover class. The root mean square error vertical (RMSEz) was computed to be 0.091 Meters The the Accuracy Z was tested to be 0.179 Meters NVA at 95-percent confidence level using RSME(z) x 1.9600 as defined by the National Standards for spatial Data Accuracy (NSSDA); assessed and reported using American Society of Photogrammetry and Remote Sensing (ASPRS) Guidelines. The VVA of the Digital Elevation Model was calculated against TINs derived from the final calibrated and controlled swath data using 60 VVA checkpoints located in the Brushlands and Low Trees and Tall Weeds and Crops land cover categories. The the Accuracy Z was tested to be 0.229 Meters VVA at 95th percentile using RSME(z) x 1.9600 as defined by the National Standards for spatial Data Accuracy (NSSDA); assessed and reported using American Society of Photogrammetry and Remote Sensing (ASPRS) Guidelines. |
Completeness Report: |
The RAW LAS data files included all data points collected. No points have been removed or excluded. A visual qualitative assessment was performed to ensure data completeness. No void areas or missing data exist. The RAW point cloud is of good quality and data passes Fundamental Vertical Accuracy specifications. Void areas (i.e., areas outside the project boundary but within the tiling scheme) are coded using a unique “NODATA” value. This value is identified in the appropriate location within the file header. |
Conceptual Consistency: |
Aerial lidar data covers the entire 2,347 square mile Area of Interest intended for this project task. All lidar point cloud tiles show no edge artifacts or mismatches from tile to tile. Void areas (i.e., areas outside the project boundary but within the tiling scheme) are coded using a unique “NODATA” value. This value is identified in the appropriate location within the file header. Data cover the entire area specified for this project. |
Lineage
Sources
DEM files from USGS in Imagine format
Contact Role Type: | Publisher |
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Contact Type: | Organization |
Contact Name: | USGS |
Citation URL: | ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/NED/OPR |
Citation URL Name: | USGS Rocky ftp site |
Citation URL Description: |
Contains original project resolution DEM data for the 3D elevation program. Data are from the FL_Southeast_*_2018 directories. |
Source Contribution: |
Provides the original data that was converted to GeoTiff format. |
Process Steps
Process Step 1
Description: |
Bare-Earth DEM Creation: Bare-Earth Digital Elevation Models (DEMs) were derived using the hydro break line and bare-earth (ground) lidar points, all DEMs were created with a grid spacing of 0.5 Meters. The DEMs were cut to tiles of 1,000 Meters X 1,000 Meters index, provided by the US Geological Survey. |
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Process Date/Time: | 2019-03-01 00:00:00 |
Process Step 2
Description: |
Data were downloaded from the USGS in Imagine format and Albers projection. GDAL was used to convert the DEM tiles into cloud optimized geotiff format for ingest into the Digital Coast Data Access System. |
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Process Date/Time: | 2020-03-10 00:00:00 |
Process Contact: | NOAA Office for Coastal Management (NOAA/OCM) |
Phone (Voice): | (843) 740-1202 |
Email Address: | coastal.info@noaa.gov |
Source: | DEM files from USGS in Imagine format |
Catalog Details
Catalog Item ID: | 59010 |
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GUID: | gov.noaa.nmfs.inport:59010 |
Metadata Record Created By: | Kirk Waters |
Metadata Record Created: | 2020-03-10 08:09+0000 |
Metadata Record Last Modified By: | Kirk Waters |
Metadata Record Last Modified: | 2024-01-10 19:11+0000 |
Metadata Record Published: | 2024-01-10 |
Owner Org: | OCMP |
Metadata Publication Status: | Published Externally |
Do Not Publish?: | N |
Metadata Last Review Date: | 2020-03-10 |
Metadata Review Frequency: | 1 Year |
Metadata Next Review Date: | 2021-03-10 |