2017 USACE FEMA Topobathy Lidar DEM: Florida East Coast, Florida Keys, and Collier County

Metadata also available as

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator:
U.S. Army Corps of Engineers (USACE), JALBTCX (Joint Airborne Lidar Bathymetry Technical Center of eXpertise)
Originator:
Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office for Coastal Management (OCM)
Publication_Date: 20171002
Title:
2017 USACE FEMA Topobathy Lidar DEM: Florida East Coast, Florida Keys, and Collier County
Publication_Information:
Publication_Place: Charleston, SC
Publisher: NOAA's Ocean Service, Office for Coastal Management (OCM)
Online_Linkage: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=8388
Online_Linkage:
https://coast.noaa.gov/htdata/raster2/elevation/USACE_FL_Post_Irma_Topobathy_DEM_2017_8388
Online_Linkage: https://coast.noaa.gov/dataviewer
Online_Linkage: https://coast.noaa.gov/dataregistry
Online_Linkage: https://coast.noaa.gov/
Description:
Abstract:
These files contain rasterized topobathy lidar elevations collected after Hurricane Irma. In an effort to provide data as soon as possible, JALBTCX will be sending rolling deliveries of data to the NOAA Office for Coastal Management for the Digital Coast. The total collection area will include the east coast of Florida, the Florida Keys, and Collier County. The data were collected by the Coastal Zone Mapping and Imaging Lidar (CZMIL) system. CZMIL integrates a lidar sensor with simultaneous topographic and bathymetric capabilities, a digital camera and a hyperspectral imager on a single remote sensing platform for use in coastal mapping and charting activities. Native lidar data is not generally in a format accessible to most Geographic Information Systems (GIS). Specialized in-house and commercial software packages are used to process the native lidar data into 3-dimensional positions that can be imported into GIS software for visualization and further analysis. The 3-D position data are sub-divided into a series of LAS files, which are tiled into 1-km by 1-km boxes defined by the Military Grid Reference System. In addition to the these topobathy bare earth Digital Elevation Models (DEMs) at a 1 meter grid spacing, the lidar point data are also available. These data are available for custom download here: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=6330 DEMs that were created from all classes of points (1, 2, 29) at a 1 meter grid size are available by request via email at: coastal.info@noaa.gov. 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.
Purpose:
This data was collected by USACE on behalf of FEMA as part of Post-Hurricane Irma emergency response efforts to assess elevations above and below water along the coast of Florida.
Time_Period_of_Content:
Time_Period_Information:
Multiple_Dates/Times:
Single_Date/Time:
Calendar_Date: 20170918
Single_Date/Time:
Calendar_Date: 20170920
Single_Date/Time:
Calendar_Date: 20170921
Single_Date/Time:
Calendar_Date: 20170922
Single_Date/Time:
Calendar_Date: 20170923
Single_Date/Time:
Calendar_Date: 20170924
Single_Date/Time:
Calendar_Date: 20170925
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -82.175
East_Bounding_Coordinate: -79.567
North_Bounding_Coordinate: 30.924
South_Bounding_Coordinate: 24.328
Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: elevation
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Categories
Theme_Keyword: elevation
Theme_Keyword: imageryBaseMapsEarthCover
Theme_Keyword: location
Theme_Keyword: oceans
Theme:
Theme_Keyword_Thesaurus: GCMD Earth Sciences Keywords v7
Theme_Keyword: OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > SEAFLOOR TOPOGRAPHY
Theme_Keyword: OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > BATHYMETRY
Theme_Keyword: EARTH SCIENCE > OCEANS >COASTAL PROCESSES > COASTAL ELEVATION
Theme_Keyword: SOLID EARTH > GEOMORPHOLOGY > COASTAL LANDFORMS/PROCESSES
Theme_Keyword: OCEANS > COASTAL PROCESSES > COASTAL ELEVATION
Theme_Keyword: LAND SURFACE > TOPOGRAPHY> TERRAIN ELEVATION
Theme_Keyword: HUMAN DIMENSIONS > LAND USE/LAND COVER > LAND USE CLASSES
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Bathymetry/Topography
Theme_Keyword: Bathymetry
Theme_Keyword: Topography
Theme_Keyword: Digital Terrain Model (DTM)
Theme_Keyword: Digital Elevation Model (DEM)
Theme_Keyword: 1mRaster
Theme_Keyword: BareEarth
Theme_Keyword: Classified LAS
Theme_Keyword:
Joint Airborne Lidar Bathymetry Technical Center of eXpertise (JALBTCX)
Theme_Keyword: Mobile District
Theme_Keyword: IWG-OCM
Theme_Keyword: National Coastal Mapping Program (NCMP)
Theme_Keyword: U.S. Army Corps of Engineers (USACE)
Theme_Keyword: Coastal Zone Mapping Imaging Lidar (CZMIL)
Theme_Keyword: Post Hurricane Irma
Theme:
Theme_Keyword_Thesaurus: GCMD Data Center Keywords v7
Theme_Keyword: DOD/USARMY/USACE/SAM/MOBILE/OPJ/JALBTCX > Department of Defense
Theme_Keyword: United States Army
Theme_Keyword: United States Army Corps of Engineers
Theme_Keyword: Mobile District
Theme_Keyword: Spatial Data Branch
Theme_Keyword: Joint Airborne Lidar Bathymetry Technical Center of Expertise
Theme:
Theme_Keyword_Thesaurus: GCMD Instrument Keywords v7
Theme_Keyword: LIDAR > LIGHT DETECTION AND RANGING
Theme:
Theme_Keyword_Thesaurus: CoRIS Discovery Thesaurus
Theme_Keyword: Geographic Information > Lidar
Theme:
Theme_Keyword_Thesaurus: CoRIS Theme Thesaurus
Theme_Keyword:
EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetry
Theme_Keyword: EARTH SCIENCE > Land Surface > Topography> Terrain Elevation
Theme:
Theme_Keyword_Thesaurus: NOAA NOS Harvest Catalog
Theme_Keyword: CoRIS
Place:
Place_Keyword_Thesaurus: GCMD Location Keywords v7
Place_Keyword: VERTICAL LOCATION > LAND SURFACE
Place_Keyword: VERTICAL LOCATION > SEA FLOOR
Place:
Place_Keyword_Thesaurus: Geographic Names Information System
Place_Keyword: United States
Place_Keyword: Florida
Place:
Place_Keyword_Thesaurus: CoRIS Place Thesaurus
Place_Keyword: OCEAN BASIN > Atlantic Ocean > North Atlantic Ocean > Florida
Place_Keyword: COUNTRY/TERRITORY > United States of America > Florida
Place_Keyword: OCEAN BASIN > Atlantic Ocean > Gulf of Mexico > Florida
Place_Keyword: COUNTRY/TERRITORY > United States of America > Florida
Temporal:
Temporal_Keyword_Thesaurus: None
Temporal_Keyword: September
Temporal_Keyword: 2017
Access_Constraints:
These data have been developed from the best available sources. Although efforts have been made to ensure that the data are accurate and reliable, errors and variable conditions originating from physical sources used to develop the data may be reflected in the data supplied. Users must be aware of these conditions and bear responsibility for the appropriate use of the information with respect to possible errors, scale, resolution, rectification, positional accuracy, development methodology, time period, environmental and climatic conditions and other circumstances specific to these data. The user is responsible for understanding the accuracy limitations of the data provided herein. The burden for determining fitness for use lies entirely with the user. The user should refer to the accompanying metadata notes for a description of the data and data development procedures.
Use_Constraints:
These data depict the heights at the time of the survey and are only accurate for that time. Acknowledgement of the Joint Airborne Lidar Bathymetry Technical Center of eXpertise (JALBTCX) would be appreciated in any publications or derived products. The data herein, including but not limited to geographic data, tabular data, analytical data, electronic data structures or files, are provided "as is" without warranty of any kind, either expressed or implied, or statutory, including, but not limited to, the implied warranties or merchantability and fitness for a particular purpose. The entire risk as to the quality and performance of the data is assumed by the user. No guarantee of accuracy is granted, nor is any responsibility for reliance thereon assumed. In no event shall the U.S. Army Corps of Engineers, Mobile District Office, Spatial Data Branch be liable for direct, indirect, incidental, consequential or special damages of any kind, including, but not limited to, loss of anticipated profits or benefits arising out of use of or reliance on the data. The Spatial Data Branch does not accept liability for any damages or misrepresentation caused by inaccuracies in the data or as a result of changes to the data caused by system transfers or other transformations or conversions, nor is there responsibility assumed to maintain the data in any manner or form. Users should be aware that temporal changes may have occurred since this dataset was collected and that some parts of these data may no longer represent actual surface conditions. Users should not use these data for critical applications without a full awareness of its limitations.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: JALBTCX
Contact_Position: Data Production Manager
Contact_Address:
Address_Type: mailing and physical
Address: 7225 Stennis Airport Rd., STE 100
City: Kiln
State_or_Province: MS
Postal_Code: 39556
Country: US
Contact_Voice_Telephone: 228-252-1131
Contact_Voice_Telephone: 228-252-1121
Contact_Facsimile_Telephone: 228-252-1133
Contact_Electronic_Mail_Address: JALBTCX@usace.army.mil
Hours_of_Service: 8 am - 5 pm Monday through Friday
Browse_Graphic:
Browse_Graphic_File_Name:
https://coast.noaa.gov/htdata/lidar2_z/geoid12b/data/6330/supplemental/fl2017_usace_fema_irma_m6330.kmz
Browse_Graphic_File_Description:
This graphic shows the lidar coverage for the 2017 topobathy lidar acquisition along the east coast of Florida, the Keys and Collier County after Hurricane Irma.
Browse_Graphic_File_Type: kmz
Data_Set_Credit:
Acknowledgement of the Joint Airborne Lidar Bathymetry Technical Center of eXpertise (JALBTCX) would be appreciated in any publications or derived products.
Native_Data_Set_Environment:
Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.1.0.3035
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report: These data are not attributed.
Quantitative_Attribute_Accuracy_Assessment:
Attribute_Accuracy_Value: None
Attribute_Accuracy_Explanation: These data are not attributed.
Logical_Consistency_Report:
During inspection and QC of the lidar point cloud, flightline to flightline elevation differences met the CZMIL sensor specifications.
Completeness_Report:
This data set covers the spatial extent of topographic lidar data obtained during this survey.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
CZMIL topographic data - Compiled to meet 1 m horizontal accuracy at 95% confidence level. CZMIL bathymetric data - Compiled to meet 3.5 + 0.05d m horizontal accuracy at 95% confidence level, d is depth.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
CZMIL topographic data - Compiled to meet 19.6 cm vertical accuracy at 95% confidence level. CZMIL bathymetric shallow FOV data - Compiled to meet SQRT((0.25^2) +((0.0075d)^2)) m vertical accuracy at 95% confidence level, d is depth. CZMIL bathymetric deep FOV data - Compiled to meet SQRT((0.30^2) +((0.013d)^2)) m vertical accuracy at 95% confidence level, d is depth.
Lineage:
Process_Step:
Process_Description:
These data were collected using the CZMIL system. It is owned and operated by the U.S. Army Corps of Engineers (USACE). The system collects topobathy lidar data at 10 kHz and RGB imagery at 2 Hz. A CASI-1500 hyperspectral line scanner is integrated with the system as well. Aircraft position, velocity and acceleration information are collected through a combination of Novatel and POS A/V 510 equipment. All raw data streams are transferred to the office for downloading and processing in CZMIL's Hydro Fusion software. Aircraft position data are processed using POSPac software and the results are combined with the lidar data to produce 3-D positions for each lidar shot. Upon inspection and QA/QC in the software packages Fledermaus and PFM_ABE, anomalous data are flagged as invalid and have the withheld bit set. PFM_ABE software then converts all valid data from ellipsoid to orthometric heights based on the NGS' GEOID12B model and exports valid lidar data as a series of unclassified LAS files.
Process_Date: 20170918
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: JALBTCX
Contact_Position: Data Production Manager
Contact_Address:
Address_Type: mailing and physical
Address: 7225 Stennis Airport RD., STE 100
City: Kiln
State_or_Province: MS
Postal_Code: 39556
Country: US
Contact_Voice_Telephone: 228-252-1121
Contact_Voice_Telephone: 228-252-1131
Contact_Facsimile_Telephone: 228-252-1133
Contact_Electronic_Mail_Address: JALBTCX@usace.army.mil
Hours_of_Service: 8 am - 5 pm Monday through Friday
Process_Step:
Process_Description:
LAS files are imported into TerraScan V13 module within Microstation V8i, classifies valid topobathy data as ground points (2) and unclassified points (1), and valid bathymetric points (29). Upon completion the macro, the classification results undergo quality control and any misclassified points are manually edited. In areas of dense vegetation the bare earth ground points might be incorrectly classified due to the inability of the laser to penetrate the canopy and reach the bare ground. In these areas, JALBTCX defaults to the algorithm's "ground" surface instead of manually reclassifying those points. They are partitioned into a series of 1-km delivery boxes, one Classified LAS file per box. The format of the file is LAS version 1.2. Data are classified as 1 (valid non-ground topographic data), 2 (valid ground topographic data), and 29 (valid bathymetric data).
Process_Date: 20170923
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: JALBTCX
Contact_Position: Data Production Manager
Contact_Address:
Address_Type: mailing and physical
Address: 7225 Stennis Airport Rd., STE 100
City: Kiln
State_or_Province: MS
Postal_Code: 39556
Country: US
Contact_Voice_Telephone: 228-252-1121
Contact_Voice_Telephone: 228-252-1131
Contact_Facsimile_Telephone: 228-252-1133
Contact_Electronic_Mail_Address: JALBTCX@usace.army.mil
Hours_of_Service: 8am - 5pm Monday through Friday
Process_Step:
Process_Description:
Data classified as ground points (2) and bathymetric points (29) in the las files are converted to a grid by generating a triangulated irregular network (TIN) and then extracting the grid node elevations from the TIN surface. The origin point of the grid is located at a horizontal position whose value is evenly divisible by the 1m grid resolution such that rasters from subsequent surveys have common cell boundaries. JALBTCX uses Quick Terrain Modeler V8 to perform this operation utilizing the following parameters; "Adaptive Triangulation, Max Z", "Max Sample Excursion - 30000", "Max Triangle Side - 30000", "Radius - none", "Tolerance - 1", and "Tiling Settings Snap to Grid (Expand)." The grid is exported from Quick Terrain Modeler as an ESRI ASCII Z grid file. Utilizing an in-house python script within ESRI ArcMap V10.2, the ASCII Z grid file is converted to a tif-format raster file whose projection is defined as "The North American Datum of 1983 (2011)." The raster is then multiplied against a corresponding 1-m mask raster, a mask image produced from JALBTCX's 1mGrid product, to remove interpolated areas where data coverage does not exist.
Process_Date: 20170923
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: JALBTCX
Contact_Position: Data Production Manager
Contact_Address:
Address_Type: mailing and physical
Address: 7225 Stennis Airport Rd., STE 100
City: Kiln
State_or_Province: MS
Postal_Code: 39556
Country: US
Contact_Voice_Telephone: 228-252-1121
Contact_Voice_Telephone: 228-252-1131
Contact_Facsimile_Telephone: 228-252-1133
Contact_Electronic_Mail_Address: JALBTCX@usace.army.mil
Hours_of_Service: 8am - 5pm Monday through Friday
Process_Step:
Process_Description:
The NOAA Office for Coastal Management (OCM) received the data in tif format from JALBTCX. The bare earth raster files were at a 1 m grid spacing. The data were in geographic coordinates and NAVD88 elevations in meters. OCM copied the raster files to database and https for Digital Coast storage and provisioning purposes.
Process_Date: 20171002
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NOAA Office for Coastal Management (OCM)
Contact_Address:
Address_Type: mailing and physical
Address: 2234 South Hobson Avenue
City: Charleston
State_or_Province: SC
Postal_Code: 29405-2413
Country: US
Contact_Voice_Telephone: 843-740-1202
Contact_Electronic_Mail_Address: coastal.info@noaa.gov
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 8.9831528411952133e-009
Longitude_Resolution: 8.9831528411952133e-009
Geographic_Coordinate_Units: Decimal degrees
Geodetic_Model:
Horizontal_Datum_Name: D NAD 1983 2011
Ellipsoid_Name: GRS 1980
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257222101
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Datum_Name: North American Vertical Datum of 1988
Altitude_Resolution: 0.001
Altitude_Distance_Units: meters
Altitude_Encoding_Method:
Explicit elevation coordinate included with horizontal coordinates
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NOAA Office for Coastal Management (OCM)
Contact_Address:
Address_Type: mailing and physical
Address: 2234 South Hobson Avenue
City: Charleston
State_or_Province: SC
Postal_Code: 29405
Country: USA
Contact_Voice_Telephone: 843-740-1202
Contact_Electronic_Mail_Address: coastal.info@noaa.gov
Resource_Description: Downloadable Data
Distribution_Liability:
These data have been developed from the best available sources. Although efforts have been made to ensure that the data are accurate and reliable, errors and variable conditions originating from physical sources used to develop the data may be reflected in the data supplied. Users must be aware of these conditions and bear responsibility for the appropriate use of the information with respect to possible errors, scale, resolution, rectification, positional accuracy, development methodology, time period, environmental and climatic conditions and other circumstances specific to these data. The user is responsible for understanding the accuracy limitations of the data provided herein. The burden for determining fitness for use lies entirely with the user. The user should refer to the accompanying metadata notes for a description of the data and data development procedures. Any conclusions drawn from the analysis of this information are not the responsibility of JALBTCX, the Office for Coastal Management, or its partners.
Custom_Order_Process:
This data can be obtained online at the following URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=8388
Metadata_Reference_Information:
Metadata_Date: 20171002
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NOAA Office for Coastal Management (OCM)
Contact_Address:
Address_Type: mailing and physical
Address: 2234 South Hobson Avenue
City: Charleston
State_or_Province: SC
Postal_Code: 29405-2413
Contact_Voice_Telephone: 843-740-1202
Contact_Electronic_Mail_Address: coastal.info@noaa.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Generated by mp version 2.9.32 on Mon Oct 2 16:14:42 2017