2012 USACE NCMP Topobathy Lidar DEM: Lake Michigan (IL,IN,MI,WI)
Data Set (DS) | OCM Partners (OCMP)GUID: gov.noaa.nmfs.inport:73267 | Updated: August 9, 2024 | Published / External
Summary
Short Citation
OCM Partners, 2024: 2012 USACE NCMP Topobathy Lidar DEM: Lake Michigan (IL,IN,MI,WI), https://www.fisheries.noaa.gov/inport/item/73267.
Full Citation Examples
Original Data:
These files contain rasterized topobathy lidar elevations generated from data collected by the Coastal Zone Mapping and Imaging Lidar (CZMIL) system and the RIEGL VQ-480 airborne lidar system along the Lake Michigan shoreline. Data coverage generally extends along the shoreline 500 meters onshore, to 1000 meters offshore from the waterline. The VQ-480 sensor has a pulse repetition rate of 150 kHz at near infrared laser wavelength. Native lidar data are not generally in a format accessible to most Geographical 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 exported to standard formats and imported into GIS software for visualization and further analysis. Horizontal positions, provided in geographic coordinates in meters, are referenced to the NAD83 (2011) Epoch 2010 datum. Vertical elevations in meters are also referenced to IGLD85.
Data Available from NOAA Digital Coast Data Access Viewer:
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 are available for custom download at the link provided in the URL section of this metadata record.
Distribution Information
-
Create custom data files by choosing data area, file format, datum, etc.
-
GeoTIFF
Simple download of data files.
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be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions.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. These data depict the heights at the time of the survey and are only accurate for that time.
Controlled Theme Keywords
COASTAL BATHYMETRY, DIGITAL ELEVATION/TERRAIN MODEL (DEM), TOPOGRAPHY
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
https://coast.noaa.gov
Metadata Contact
NOAA Office for Coastal Management (NOAA/OCM)
coastal.info@noaa.gov
(843) 740-1202
https://coast.noaa.gov
Extents
-88.12° W,
-84.66° E,
46.18° N,
41.58° S
2012-09-02
2012-09-03
2012-09-07
2012-09-08
2012-09-09
2012-09-10
2012-09-12
2012-09-13
2012-09-14
2012-09-23
2012-09-25
2012-09-26
2012-09-27
2012-09-28
2012-09-29
2012-10-01
2012-10-02
2012-10-03
2012-10-06
2012-10-15
2012-10-16
2012-10-17
2012-10-18
2012-10-19
2013-11-05
2013-11-06
2013-11-11
2013-11-18
2013-11-26
Item Identification
Title: | 2012 USACE NCMP Topobathy Lidar DEM: Lake Michigan (IL,IN,MI,WI) |
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Status: | Completed |
Creation Date: | 2012 |
Abstract: |
Original Data: These files contain rasterized topobathy lidar elevations generated from data collected by the Coastal Zone Mapping and Imaging Lidar (CZMIL) system and the RIEGL VQ-480 airborne lidar system along the Lake Michigan shoreline. Data coverage generally extends along the shoreline 500 meters onshore, to 1000 meters offshore from the waterline. The VQ-480 sensor has a pulse repetition rate of 150 kHz at near infrared laser wavelength. Native lidar data are not generally in a format accessible to most Geographical 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 exported to standard formats and imported into GIS software for visualization and further analysis. Horizontal positions, provided in geographic coordinates in meters, are referenced to the NAD83 (2011) Epoch 2010 datum. Vertical elevations in meters are also referenced to IGLD85. Data Available from NOAA Digital Coast Data Access Viewer: 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 are available for custom download at the link provided in the URL section of this metadata record. |
Purpose: |
These data were collected as a part of the NCMP to depict the bare earth elevations above water in the Illinois, Indiana Michigan, and Wisconsin coastal zone. |
Keywords
Theme Keywords
Thesaurus | Keyword |
---|---|
Global Change Master Directory (GCMD) Science Keywords |
EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY
|
Global Change Master Directory (GCMD) Science Keywords |
EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION > DIGITAL ELEVATION/TERRAIN MODEL (DEM)
|
Global Change Master Directory (GCMD) Science Keywords |
EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > BATHYMETRY > COASTAL BATHYMETRY
|
Spatial Keywords
Thesaurus | Keyword |
---|---|
Global Change Master Directory (GCMD) Location Keywords |
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA
|
Global Change Master Directory (GCMD) Location Keywords |
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > ILLINOIS
|
Global Change Master Directory (GCMD) Location Keywords |
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > INDIANA
|
Global Change Master Directory (GCMD) Location Keywords |
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > MICHIGAN
|
Global Change Master Directory (GCMD) Location Keywords |
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > WISCONSIN
|
Instrument Keywords
Thesaurus | Keyword |
---|---|
Global Change Master Directory (GCMD) Instrument Keywords |
LIDAR > Light Detection and Ranging
|
Platform Keywords
Thesaurus | Keyword |
---|---|
Global Change Master Directory (GCMD) Platform Keywords |
Airplane > Airplane
|
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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Maintenance Frequency: | As Needed |
Data Presentation Form: | Model (digital) |
Entity Attribute Detail Citation: |
none |
Distribution Liability: |
Although these data have been processed successfully on a computer system at the US Army Corps of Engineers, no warranty expressed or implied is made by the US Army Corps of Engineers regarding the utility of the data on any other system, nor shall the act of distribution constitute any such warranty. No responsibility is assumed by the US Army Corps of Engineers in the use of these data. Any conclusions drawn from the analysis of this information are not the responsibility of USACE, JALBTCX, NOAA, the Office for Coastal Management or its partners. |
Data Set Credit: | USACE JALBTCX |
Support Roles
Data Steward
Date Effective From: | 2024 |
---|---|
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: | 2024 |
---|---|
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: | 2024 |
---|---|
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: | 2024 |
---|---|
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: | -88.12 | |
---|---|---|
E° Bound: | -84.66 | |
N° Bound: | 46.18 | |
S° Bound: | 41.58 |
Extent Group 1 / Time Frame 1
Time Frame Type: | Discrete |
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Start: | 2012-09-02 |
Extent Group 1 / Time Frame 2
Time Frame Type: | Discrete |
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Start: | 2012-09-03 |
Extent Group 1 / Time Frame 3
Time Frame Type: | Discrete |
---|---|
Start: | 2012-09-07 |
Extent Group 1 / Time Frame 4
Time Frame Type: | Discrete |
---|---|
Start: | 2012-09-08 |
Extent Group 1 / Time Frame 5
Time Frame Type: | Discrete |
---|---|
Start: | 2012-09-09 |
Extent Group 1 / Time Frame 6
Time Frame Type: | Discrete |
---|---|
Start: | 2012-09-10 |
Extent Group 1 / Time Frame 7
Time Frame Type: | Discrete |
---|---|
Start: | 2012-09-12 |
Extent Group 1 / Time Frame 8
Time Frame Type: | Discrete |
---|---|
Start: | 2012-09-13 |
Extent Group 1 / Time Frame 9
Time Frame Type: | Discrete |
---|---|
Start: | 2012-09-14 |
Extent Group 1 / Time Frame 10
Time Frame Type: | Discrete |
---|---|
Start: | 2012-09-23 |
Extent Group 1 / Time Frame 11
Time Frame Type: | Discrete |
---|---|
Start: | 2012-09-25 |
Extent Group 1 / Time Frame 12
Time Frame Type: | Discrete |
---|---|
Start: | 2012-09-26 |
Extent Group 1 / Time Frame 13
Time Frame Type: | Discrete |
---|---|
Start: | 2012-09-27 |
Extent Group 1 / Time Frame 14
Time Frame Type: | Discrete |
---|---|
Start: | 2012-09-28 |
Extent Group 1 / Time Frame 15
Time Frame Type: | Discrete |
---|---|
Start: | 2012-09-29 |
Extent Group 1 / Time Frame 16
Time Frame Type: | Discrete |
---|---|
Start: | 2012-10-01 |
Extent Group 1 / Time Frame 17
Time Frame Type: | Discrete |
---|---|
Start: | 2012-10-02 |
Extent Group 1 / Time Frame 18
Time Frame Type: | Discrete |
---|---|
Start: | 2012-10-03 |
Extent Group 1 / Time Frame 19
Time Frame Type: | Discrete |
---|---|
Start: | 2012-10-06 |
Extent Group 1 / Time Frame 20
Time Frame Type: | Discrete |
---|---|
Start: | 2012-10-15 |
Extent Group 1 / Time Frame 21
Time Frame Type: | Discrete |
---|---|
Start: | 2012-10-16 |
Extent Group 1 / Time Frame 22
Time Frame Type: | Discrete |
---|---|
Start: | 2012-10-17 |
Extent Group 1 / Time Frame 23
Time Frame Type: | Discrete |
---|---|
Start: | 2012-10-18 |
Extent Group 1 / Time Frame 24
Time Frame Type: | Discrete |
---|---|
Start: | 2012-10-19 |
Extent Group 1 / Time Frame 25
Time Frame Type: | Discrete |
---|---|
Start: | 2013-11-05 |
Extent Group 1 / Time Frame 26
Time Frame Type: | Discrete |
---|---|
Start: | 2013-11-06 |
Extent Group 1 / Time Frame 27
Time Frame Type: | Discrete |
---|---|
Start: | 2013-11-11 |
Extent Group 1 / Time Frame 28
Time Frame Type: | Discrete |
---|---|
Start: | 2013-11-18 |
Extent Group 1 / Time Frame 29
Time Frame Type: | Discrete |
---|---|
Start: | 2013-11-26 |
Spatial Information
Spatial Representation
Representations Used
Grid: | Yes |
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Reference Systems
Reference System 1
Coordinate Reference System |
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Reference System 2
Coordinate Reference System |
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Access Information
Security Class: | Unclassified |
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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. These data depict the heights at the time of the survey and are only accurate for that time. |
Distribution Information
Distribution 1
Start Date: | 2021 |
---|---|
End Date: | Present |
Download URL: | https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=10167/details/10167 |
Distributor: | NOAA Office for Coastal Management (NOAA/OCM) (2024 - Present) |
File Name: | Customized Download |
Description: |
Create custom data files by choosing data area, file format, datum, etc. |
File Type (Deprecated): | Zip |
Compression: | Zip |
Distribution 2
Start Date: | 2021 |
---|---|
End Date: | Present |
Download URL: | https://noaa-nos-coastal-lidar-pds.s3.us-east-1.amazonaws.com/dem/USACE_Lake_Mich_IL_IN_MI_WI_DEM_2012_10167/index.html |
Distributor: | NOAA Office for Coastal Management (NOAA/OCM) (2024 - Present) |
File Name: | Bulk Download |
Description: |
Simple download of data files. |
File Type (Deprecated): | GeoTIFF |
Distribution Format: | GeoTIFF |
URLs
URL 1
URL: | https://coast.noaa.gov/dataviewer |
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Name: | Data Access Viewer |
URL Type: |
Online Resource
|
Description: |
Link to the Data Access Viewer. |
URL 2
URL: | https://coast.noaa.gov |
---|---|
Name: | NOAA OCM |
URL Type: |
Online Resource
|
Description: |
Link to the NOAA Office for Coastal Management (OCM) website. |
Activity Log
Activity Log 1
Activity Date/Time: | 2016-05-23 |
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Description: |
Date that the source FGDC record was last modified. |
Activity Log 2
Activity Date/Time: | 2017-11-14 |
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Description: |
Converted from FGDC Content Standards for Digital Geospatial Metadata (version FGDC-STD-001-1998) using 'fgdc_to_inport_xml.pl' script. Contact Tyler Christensen (NOS) for details. |
Activity Log 3
Activity Date/Time: | 2018-02-08 |
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Description: |
Partial upload of Positional Accuracy fields only. |
Activity Log 4
Activity Date/Time: | 2018-03-13 |
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Description: |
Partial upload to move data access links to Distribution Info. |
Data Quality
Horizontal Positional Accuracy: |
The data point positions were obtained using post processed KGPS methods. The horizontal accuracy of the data is better than +/- 0.50 m RMSE. |
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Vertical Positional Accuracy: |
The data point positions were obtained using post processed KGPS methods. The vertical accuracy of the data is better than +/- 0.15 m RMSE. |
Completeness Report: |
This data set covers the spatial extent of bathymetric and topographic lidar data obtained during this survey. |
Conceptual Consistency: |
Differences between a DEM created from the lidar data representing bare ground and the ground truth point data is unbiased and within +/- 15 cm (RMSE) in flat terrain and within +/-30 cm (RMSE) in hilly terrain |
Lineage
Lineage Statement: |
Data collected and processed by USACE JALBTCX. Data sent to NOAA OCM for distribution on the NOAA Digital Coast. |
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Sources
USACE JALBCTX
Process Steps
Process Step 1
Description: |
These data were collected using the RIEGL VQ-480 lidar system, operated by Fugro Pelagos through contract. The system collects topographic lidar data at maximum pulse rate of 150 kHz in a wavelength near infrared. Aircraft position, velocity and acceleration information are collected a POS AV 510 equipment. All logged raw data were transferred to the office and processed in RiPROCESS software. Aircraft position data are processed using POSPac software and the results combined with the lidar data to produce 3-D positions for each lidar shot. Upon processing and export to LAS format, QA/QC is performed with Fledermaus and FPI Workbench tools. Data are classified as 0 (valid topographic data), 21 (valid topographic data acquired with the bathymetric sensor), 27 (invalid topographic and bathymetric data), 29 (valid bathymetric data). The data are then shifted vertically to the International Great Lakes Datum of 1985 (IGLD85) using the VDatum program from NOAA (National Oceanic and Atmospheric Administration). |
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Process Step 2
Description: |
The flightline LAS files are imported into GeoCue V7.0.3.5, which is a geospatial workflow production and management software tool employed by JALBTCX to perform and monitor production of data products. Upon import into GeoCue, the flightline LAS files are divided into a series of boxes, each of which are 1500 meters in length and width. A customized classification macro, built upon the TerraScan V12 module within Microstation V8i, classifies valid topographic data as ground points (2) and unclassified points (1). Upon completion the macro, the classification results undergo quality control and any misclassified points are manually edited. The resulting LAS file is then combined with valid bathymetric data (29). 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. The final classification results are comprised of individual lidar points with classifications of ground (2), unclassified (1), water (9), and valid bathymetric data (29). |
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Process Step 3
Description: |
Data classified as ground (2) and valid bathymetric data (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 V7.1.5 Beta to perform this operation utilizing the following parameters;” Legacy Triangulation”, 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 V10.0, the ASCII Z grid file is converted to a tiff-format raster file whose projection is defined as “The North American Datum of 1983.” The raster is then multiplied against a corresponding 1m Grid mask raster, a mask image produced from JALBTCX’s 1m Grid, in ESRI’s Raster Calculator to remove interpolated areas where data does not exist. |
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Process Step 4
Description: |
The NOAA Office for Coastal Management (OCM) received 235 1 meter bare earth raster files in GeoTiff format from USACE JALBTCX along the Illinois, Indiana, Michigan, and Wisconsin coastlines. The data were in geographic, NAD83 (2011) coordinates and IGLD85 elevations. OCM assigned the appropriate EPSG codes (Horiz - 6318, Vert - 5609) and copied the raster files to https for Digital Coast storage and provisioning purposes. |
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Process Date/Time: | 2024-08-09 00:00:00 |
Process Contact: | Office for Coastal Management (OCM) |
Catalog Details
Catalog Item ID: | 73267 |
---|---|
GUID: | gov.noaa.nmfs.inport:73267 |
Metadata Record Created By: | Rebecca Mataosky |
Metadata Record Created: | 2024-08-07 20:12+0000 |
Metadata Record Last Modified By: | Rebecca Mataosky |
Metadata Record Last Modified: | 2024-08-09 18:37+0000 |
Metadata Record Published: | 2024-08-09 |
Owner Org: | OCMP |
Metadata Publication Status: | Published Externally |
Do Not Publish?: | N |
Metadata Last Review Date: | 2021-03-26 |
Metadata Review Frequency: | 1 Year |
Metadata Next Review Date: | 2022-03-26 |