Short Citation:
Office for Coastal Management, 2021: 2010 Great Lakes Restoration Initiative Bathymetric Lidar: Lake Superior, https://www.fisheries.noaa.gov/inport/item/48185.

Item Identification

Title: 2010 Great Lakes Restoration Initiative Bathymetric Lidar: Lake Superior
Short Name: glri2010_superior_m586_metadata
Status: Completed
Publication Date: 2011-02-11
Abstract:

The data contained in this file contain hydrographic and topographic data collected by the Fugro LADS Mk II system along the Lake Superior coast

of Minnessota, Wisconsin and Michigan. FLI was contracted under Fugro Earth Data Inc (FEDI) by NOAA Office for Coastal Management (OCM) to collect

data under the Great Lakes Restoration Initiative.

All point data has delivered is in LAS 1.2 format

The file has been classified so that all points are classified as first return or bare earth

First return points include all vegetation, buildings or other feature with fixed position

Bare earth points exclude vegetation, buildings, piers, jetties, nav aids, bridges and any other fixed man made feature. Except for break waters

and retaining walls along the shore line.

Original contact information:

Contact Org: Fugro LADS Inc

Title: Project Manager

Phone: +1 228 818 8390

Email: ladsusa@fugrolads.com

Purpose:

This data was collected as part of the Great Lakes Restoration Initiative (GLRI), an inter-agency initiative lead by the Environmental Protection

Agency (EPA) targeting areas with the most significant problems in the Great Lakes region.

Notes:

10208

Supplemental Information:

Data extends off shore from the shoreline to extinction depth or 1km, which ever is closer.

Data extends onshore from the shoreline to 30m.

Gaps in Bathymetry can be attributed to turbid water, glassy lake surfaces, boats, extinction depths

Gaps in bathymetry were reflown multiple times to attempt full bottom coverage.

Gaps in Topography occur where data collected was rejected due to significant datum errors after long sections of over land.

These areas were attempted multiple times.

The Lidar Collection Survey Report for this data set may be viewed at:

https://coast.noaa.gov/htdata/lidar1_z/geoid12a/data/586/supplemental/2010_GLRI_Survey_Report.pdf

A footprint of this data set may be viewed in Google Earth at:

https://coast.noaa.gov/htdata/lidar1_z/geoid12a/data/586/supplemental/2010_GLRI_Bathymetric_Lidar_Lake_Superior.kmz

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 > Seafloor Topography
Global Change Master Directory (GCMD) Science Keywords Earth Science > Oceans > Coastal Processes > Coastal Elevation
ISO 19115 Topic Category elevation
None Bathymetry/Topography
None digital elevation model
None LADS Mk II
None las
None Lidar

Spatial Keywords

Thesaurus Keyword
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 > Minnesota
Global Change Master Directory (GCMD) Location Keywords Continent > North America > United States Of America > Wisconsin
None Great Lakes
None Lake Superior
None Michigan
None Minnesota
None US
None Wisconsin

Physical Location

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

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: As Needed
Data Presentation Form: Lidar survey
Distribution Liability:

Any conclusions drawn from the analysis of this information are not the responsibility of the Office for Coastal Management

or its partners.

Data Set Credit: Acknowledgement of Fugro LADS Inc (FLI) would be appreciated in any publications provided or derived products.

Support Roles

Data Steward

CC ID: 623986
Date Effective From: 2011-02-11
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: 623988
Date Effective From: 2011-02-11
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: 623989
Date Effective From: 2011-02-11
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: 623987
Date Effective From: 2011-02-11
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: 623992
W° Bound: -92.094878
E° Bound: -87.655578
N° Bound: 47.966392
S° Bound: 46.561792

Extent Group 1 / Time Frame 1

CC ID: 623991
Time Frame Type: Range
Start: 2010-07-02
End: 2010-08-12

Spatial Information

Spatial Representation

Representations Used

Vector: Yes

Access Information

Security Class: Unclassified
Data Access Procedure:

This data can be obtained on-line at the following URL: https://coast.noaa.gov/dataviewer;

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. Not for navigational use.

Distribution Information

Distribution 1

CC ID: 743850
Download URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=586
Distributor:
File Name: Customized Download
Description:

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

Distribution 2

CC ID: 743851
Download URL: https://coast.noaa.gov/htdata/lidar1_z/geoid12a/data/586
Distributor:
File Name: Bulk Download
Description:

Simple download of data files.

URLs

URL 1

CC ID: 743853
URL: https://coast.noaa.gov/dataviewer
URL Type:
Online Resource

URL 2

CC ID: 743854
URL: https://coast.noaa.gov
URL Type:
Online Resource

Activity Log

Activity Log 1

CC ID: 624012
Activity Date/Time: 2016-05-23
Description:

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 624011
Activity Date/Time: 2017-11-14
Description:

Converted from FGDC Content Standard 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

CC ID: 717861
Activity Date/Time: 2018-02-08
Description:

Partial upload of Positional Accuracy fields only.

Activity Log 4

CC ID: 743852
Activity Date/Time: 2018-03-13
Description:

Partial upload to move data access links to Distribution Info.

Technical Environment

Description:

FLI Ground System L3.3.

CARIS Hips/Sips 7.0.2

CARIS Base Editor 2.3.0

Global Mapper 11.02

Grafnav 8.10

Fugro Workbench 4.01.08.00

ESRI ArcGIS 9.3.1

Data Quality

Horizontal Positional Accuracy:

The data positions were obtained using post processed KGPS methods. The horizontal accuracy of the data is better than +/- 3m.; Quantitative Value: 3.0 meters, Test that produced the value: 2 sigma

Vertical Positional Accuracy:

The data positions were reduced to IGLD85 using water level gauges in proximity to the data collection areas. In order to transform the data to

ellipsoid heights an intermediate step of vertically transforming the data from IGLD85 to NAVD88 was completed. There was a 0.025m error

associated with this transformation. The vertical accuracy of the data is better than +/- 0.293m.

; Quantitative Value: 0.293 meters, Test that produced the value: 2 sigma

Completeness Report:

See Report of Survey

Conceptual Consistency:

The data in this file were tested against independantly collected ground truth data. At these locations the Lidar data matched vertically within

0.20 meters. Relative checks over crosslines and benchmarks agreed vertically within 0.10 meters.

Lineage

Process Steps

Process Step 1

CC ID: 623976
Description:

This data was collected using the LADS Mk II bathymetric Lidar survey system. It is owned by Fugro LADS Corp. and was operated by Fugro LADS, Inc.

The system collects bathymetric/topographic data at 1kHz. The system also collects digital imagery at 1Hz. Aircraft position information is

collected with Wide Area Differential (WADGPS) through Omistar and is logged with GrafNav. The LADS Mk II system operated on a stabalised

platform. Raw data are copied from the LADS Air System (AS) to the LADS Ground System (GS) where post processed GPS is applied as the raw data

is processed, producing a 3-D position for each waveform in the dataset.

The data was reduced with the use of water level information downloaded from NOAA COOPS website to vertical datum IGLB85 minus a

constant 183.2 meters (the LADS ground system allows tidal corrections less than +/- 100 meters due to usual operation in areas closer to mean

sea level). 183.2 meters was added back to each sounding as data was exported out of the LADS Ground System to reference it to IDLG85. Data

was then shifted by a constant 0.03m to reference the dataset to NAVD88. Fugro Earth Data Inc. then completed the final trasformation to the

NAD83 datum.

First return and bare earth data sets were exported as LAS 1.2 format files and delivered to Fugro Earth Data Inc. for classification.

Process Date/Time: 2010-12-01 00:00:00

Process Step 2

CC ID: 623977
Description:

Both LAS files were merged, if the same data point existed in both data sets then it was assigned a bare earth classification in the first return

data set; If a point existed in the first return dataset and not in the bare earth data set it was assigned a first return classification in the

first return LAS data set.

To maintain header information the single classified LAS file was then imported into ProjMap for transformation from IGLD85 to GRS80 heights.

As ProjMap does not recognize IGLD85 an assumption was made that IGLD85 heights and NAVD88 heights are the same with an error of +/-0.01m.

This was determined by transforming a sample of points across the data set with a height value of 183.2m (lake surface) and converting them to

NAVD88 with NOAA's VDatum. The average difference across the sample set was < 1cm. GeoCoding in GeoCue was ran to assign the correct header

information to the file.

The classified LAS 1.2 format file was delivered back to Fugro LADS Inc.

Process Date/Time: 2011-01-01 00:00:00

Process Step 3

CC ID: 623978
Description:

The NOAA Office for Coastal Management (OCM) received files in LAS format. The files contained bathymetric Lidar depth measurements.

OCM performed the following processing on the data for data storage purposes and Digital Coast provisioning:

1. The data were converted from projected UTM (NAD83, Zone 15 & 16) coordinates to geographic (NAD83) coordinates

2. The data were converted from NAVD88 heights to ellipsoid heights using Geoid09

3. The LAS header fields were sorted by latitude and updated

Process Date/Time: 2011-05-10 00:00:00

Catalog Details

Catalog Item ID: 48185
Metadata Record Created By: Anne Ball
Metadata Record Created: 2017-11-14 14:19+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2019-07-02 15:17+0000
Metadata Record Published: 2018-03-13
Owner Org: OCM
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Next Review Date: 2019-03-14