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Item Identification
Keywords
Physical Location
Data Set Info
Support Roles
Extents
Spatial Info
Access Info
Distribution Info
URLs
Tech Environment
Data Quality
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Catalog Details

Summary

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Short Citation
Office for Coastal Management, 2024: 2017 NOAA NGS Topobathy Lidar DEM (Interpolated): Fort Lauderdale to Miami (FL), https://www.fisheries.noaa.gov/inport/item/56116.
Full Citation Examples

Abstract

These data were collected by the National Oceanic and Atmospheric Administration (NOAA), National Geodetic Survey (NGS), Remote Sensing Devision (RSD), Coastal Mapping Program (CMP) using a Riegl VQ880G system. Quantum Spatial Inc (QSI) was contracted by NOAA to process the topobathymetic LiDAR data. The NOAA Miami Florida Intracoastal Topobathy (Miami Intracoastal) data were acquired from 20170224 - 20170310 in five missions. The Miami Intracoastal dataset includes topobathy data in a LAS 1.2 format file with the following classification: unclassified (1), ground (2), noise (7), overlap default (19), overlap ground (20), overlap water column (21), water column (25), bathymetric bottom or submerged topography (26), submerged feature (29), and temporal bathy bottom (31) in accordance with project specifications. The contracted project consists of approximately 53,381 acres along the Atlantic Coast of Miami, Florida. This dataset delivery represents the full NOAA Miami Florida Intracoastal Topobathy LiDAR Processing area. LAS files were compiled by 500 m x 500 m tiles. The final classified LiDAR data were then used to create topobathymetric DEMs in IMG format with 1m pixel resolution. This Miami Intracoastal dataset represents an area covering 15 - 5000 m x 5000 m DEM tiles.

Distribution Information

  • Create custom data files by choosing data area, product type, map projection, file format, datum, etc.

  • LAS/LAZ - LASer

    Simple download of data files.

Access Constraints:

None

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be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions.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.

Controlled Theme Keywords

BATHYMETRY, COASTAL ELEVATION, elevation, SEAFLOOR TOPOGRAPHY, TOPOGRAPHICAL RELIEF MAPS

Child Items

No Child Items for this record.

Contact Information

Point of Contact
NOAA Office for Coastal Management (NOAA/OCM)
coastal.info@noaa.gov
(843) 740-1202

Metadata Contact
NOAA Office for Coastal Management (NOAA/OCM)
coastal.info@noaa.gov
(843) 740-1202

Extents

Geographic Area 1

-80.19251° W, -80.098619° E, 26.118616° N, 25.744208° S

Time Frame 1
2017-02-24 - 2017-03-10

Item Identification

Title: 2017 NOAA NGS Topobathy Lidar DEM (Interpolated): Fort Lauderdale to Miami (FL)
Status: Completed
Publication Date: 2019-04
Abstract:

These data were collected by the National Oceanic and Atmospheric Administration (NOAA), National Geodetic Survey (NGS), Remote Sensing Devision (RSD), Coastal Mapping Program (CMP) using a Riegl VQ880G system. Quantum Spatial Inc (QSI) was contracted by NOAA to process the topobathymetic LiDAR data. The NOAA Miami Florida Intracoastal Topobathy (Miami Intracoastal) data were acquired from 20170224 - 20170310 in five missions. The Miami Intracoastal dataset includes topobathy data in a LAS 1.2 format file with the following classification: unclassified (1), ground (2), noise (7), overlap default (19), overlap ground (20), overlap water column (21), water column (25), bathymetric bottom or submerged topography (26), submerged feature (29), and temporal bathy bottom (31) in accordance with project specifications. The contracted project consists of approximately 53,381 acres along the Atlantic Coast of Miami, Florida. This dataset delivery represents the full NOAA Miami Florida Intracoastal Topobathy LiDAR Processing area. LAS files were compiled by 500 m x 500 m tiles. The final classified LiDAR data were then used to create topobathymetric DEMs in IMG format with 1m pixel resolution. This Miami Intracoastal dataset represents an area covering 15 - 5000 m x 5000 m DEM tiles.

Purpose:

This lidar data was required by National Oceanic and Atmospheric Administration (NOAA), the National Geodetic Survey (NGS), Remote Sensing Division Coastal Mapping Program (CMP) to enable accurate and consistent measurement of the national shoreline. The CMP works to provide a regularly updated and consistent national shoreline to define America's marine territorial limits and manage coastal resources.

Supplemental Information:

The Miami Intracoastal data includes all lidar returns. An automated grounding classification algorithm was used to determine bare earth and submerged topography point classification. The automated grounding was followed with manual editing. Classes 2 (ground) and 26 (submerged topography) were used to create the final DEMs. The full workflow used for this project is documented in the NOAA Miami Florida Intracoastal Topobathymetric LiDAR Processing final report.

Keywords

Theme Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION > TOPOGRAPHICAL RELIEF MAPS
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > BATHYMETRY
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > SEAFLOOR TOPOGRAPHY
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > OCEANS > COASTAL PROCESSES > COASTAL ELEVATION
ISO 19115 Topic Category
elevation
UNCONTROLLED
CoRIS Discovery Thesaurus Geographic Information > LiDAR
CoRIS Theme Thesaurus EARTH SCIENCE > Land Surface > Topography> Terrain Elevation
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetry
NOAA NOS Harvest Catalog CoRIS
None DEM

Temporal Keywords

Thesaurus Keyword
UNCONTROLLED
None 20170224
None 20170225
None 20170302
None 20170309
None 20170310

Spatial Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Location Keywords
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > FLORIDA
UNCONTROLLED
CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > Florida

Physical Location

Organization: Office for Coastal Management
City: Charleston
State/Province: SC

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: None Planned
Distribution Liability:

Any conclusions drawn from the analysis of this information are not the responsibility of NOAA, the National Geodetic Survey, the Office for Coastal Management, or its partners.

Data Set Credit: We request that you credit the National Oceanic and Atmospheric Administration (NOAA) when you use these data in a report, publication, or presentation.

Support Roles

Data Steward

CC ID: 836480
Date Effective From: 2019-04
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

CC ID: 836482
Date Effective From: 2019-04
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

CC ID: 836483
Date Effective From: 2019-04
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

CC ID: 836481
Date Effective From: 2019-04
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

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 1292034
W° Bound: -80.19251
E° Bound: -80.098619
N° Bound: 26.118616
S° Bound: 25.744208

Extent Group 1 / Time Frame 1

CC ID: 1292033
Time Frame Type: Range
Start: 2017-02-24
End: 2017-03-10

Spatial Information

Spatial Representation

Representations Used

Vector: No

Reference Systems

Reference System 1

CC ID: 1292031

Coordinate Reference System

CRS Type: Vertical
EPSG Code: EPSG:5703
EPSG Name: NAVD88 height
See Full Coordinate Reference System Information

Reference System 2

CC ID: 1292030

Coordinate Reference System

CRS Type: Projected
EPSG Code: EPSG:6346
EPSG Name: NAD83(2011) / UTM zone 17N
See Full Coordinate Reference System Information

Access Information

Security Class: Unclassified
Data Access Procedure:

This data can be obtained on-line at the following URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=6271;

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

CC ID: 836484
Download URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=8729
Distributor: NOAA Office for Coastal Management (NOAA/OCM) (2019-04 - Present)
File Name: Customized Download
Description:

Create custom data files by choosing data area, product type, map projection, file format, datum, etc.

File Type (Deprecated): Zip
Compression: Zip

Distribution 2

CC ID: 836485
Download URL: https://noaa-nos-coastal-lidar-pds.s3.us-east-1.amazonaws.com/dem/NGS_FL_Miami_DEM_Interpolated_2017_8729/
Distributor: NOAA Office for Coastal Management (NOAA/OCM) (2019-04 - Present)
File Name: Bulk Download
Description:

Simple download of data files.

File Type (Deprecated): LAZ
Distribution Format: LAS/LAZ - LASer
Compression: Zip

URLs

URL 1

CC ID: 836486
URL: https://coast.noaa.gov
Name: Office for Coastal Management
URL Type:
Online Resource

URL 2

CC ID: 836487
URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/8713/supplemental/fl2017_miami_topobathy_m8713.kmz
Name: Browse Graphic
URL Type:
Browse Graphic
File Resource Format: kmz
Description:

This graphic shows the lidar footprint for the 2016 NOAA NGS topobathy lidar project of Florida Keys Outer Reef Block01.

URL 3

CC ID: 836488
URL: https://coast.noaa.gov/dataviewer
Name: Digital Coast Data Access Viewer
URL Type:
Online Resource

URL 4

CC ID: 836489
URL: https://coast.noaa.gov/dataregistry
Name: Digital Coast Data
URL Type:
Online Resource

Technical Environment

Description:

OS Independent

Data Quality

Representativeness:

NOAA provided QSI 2 sets of ground survey points in order to evaluate accuracy. Absolute accuracy was assessed using Non-Vegetated Vertical Accuracy (NVA) survey methods. NVA compares known ground check point data that were withheld from the calibration and post-processing of the LiDAR point cloud to the triangulated surface generated by the LiDAR points that were calibrated and post-processed. NVA is a measure of the accuracy of LiDAR point data in open areas with level slope (less than 20 degrees) where the LiDAR system has a high probability of measuring the ground surface and is evaluated at the 95% confidence interval (1.96*RMSE). In the NOAA Miami Florida Intracoastal Topobathy LiDAR Processing area, one file provided (FL1703_ICW01_gcp_tscan) contained 136 survey checkpoints that were used to assess the non-vegetated vertical accuracy. An additional file (FL1703_ICW01_pro_tscan) contained 704 survey checkpoints that were also used to assess vertical accuracy. Project specifications require NVA meet 0.196 m accuracy at the 95% confidence interval.

Horizontal Positional Accuracy:

Not tested

Vertical Positional Accuracy:

Using NSSDA and FEMA methodology, the non-vegetated vertical accuracy (NVA) at the 95% confidence level (called Accuracyz) was computed by the formula RMSEz x 1.9600. The South Carolina Miami Intracoastal dataset tested 0.097 m vertical accuracy at 95% confidence level in open terrain using 136 ground check points provided in the FL1703_ICW01_gcp_tscan.txt file provided by NOAA, based on RMSEz (0.050 m) x 1.9600.

Using NSSDA and FEMA methodology, the non-vegetated vertical accuracy (NVA) at the 95% confidence level (called Accuracyz) was computed by the formula RMSEz x 1.9600. The South Carolina Miami Intracoastal dataset tested 0.095 m vertical accuracy at 95% confidence level in open terrain using 704 ground check points provided in the FL1703_ICW01_pro_tscan.txt file provided by NOAA, based on RMSEz (0.049 m) x 1.9600.

Lineage

Sources

Lidar

CC ID: 1292027

Process Steps

Process Step 1

CC ID: 1292028
Description:

Data for the NOAA Miami Florida Intracoastal Topobathy LiDAR Processing project data was acquired by the National Oceanic and Atmospheric Administration (NOAA) using a Riegl VQ-880G Topobathy LiDAR system. All delivered LiDAR data is referenced to:

Horizontal Datum-NAD83 (2011) epoch: 2010

Projection-UTM Zone 17N

Horizontal Units-meters

Vertical Datum- NAVD88 (Geoid12b)

Vertical Units-meters

This Miami Intracoastal dataset encompasses 1064 500m x 500m tiles in eastern Miami, Florida. Green and NIR (for water surface model creation that is used during refraction of the green bathymetric data) LiDAR data were acquired with the Riegl sensor VQ-880G.

QSI ran and automated grounding and performed manual editing to review all classification and improve the final topobathy surface. QSI's LasMonkey was used to update LAS header information, including all projection and coordinate reference system information. The final LiDAR data are in LAS format 1.2 and point data record format 3.

The classification scheme is as follows:

1-Unclassified

2-Ground

7-Noise

19-Overlap Default

20-Overlap Ground

21-Overlap Water Column

25-Water Column

26-Bathymetric Bottom or Submerged Topography

29-Submerged feature

31-Temporal Bathymetric Bottom

Process Date/Time: 2018-08-20 00:00:00

Process Step 2

CC ID: 1292029
Description:

QSI transformed the ellipsoid heights of the final LiDAR data into orthometric heights referenced to NAVD88 using Geoid 12B to create the DEMs. The topobathymetric DEM was output at 1 meter resolution in IMG format into 5000 m x 5000 m tiles. The Miami Intracoastal raster is clipped to the extent of the tile grid and named according to project specifications.

Interpolated DEM dataset-These DEMs represent a continuous surface with all void areas interpolated. No void layer was incorporated into this DEM and there are no areas of No Data, regardless of whether the LiDAR data fully penetrated to the submerged topography.

Process Date/Time: 2018-08-20 00:00:00

Catalog Details

Catalog Item ID: 56116
GUID: gov.noaa.nmfs.inport:56116
Metadata Record Created By: Maryellen Sault
Metadata Record Created: 2019-04-22 15:35+0000
Metadata Record Last Modified By: Kirk Waters
Metadata Record Last Modified: 2024-01-10 19:05+0000
Metadata Record Published: 2024-01-10
Owner Org: OCM
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2022-03-16
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2023-03-16