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Short Citation:
OCM Partners, 2022: 2005 - 2007 US Army Corps of Engineers (USACE) Topo/Bathy Lidar: Maine, Massachusetts, and Rhode Island, https://www.fisheries.noaa.gov/inport/item/50052.

Item Identification

Title: 2005 - 2007 US Army Corps of Engineers (USACE) Topo/Bathy Lidar: Maine, Massachusetts, and Rhode Island
Short Name: usace2005_2007_ma_me_ri_m116_metadata
Status: Completed
Publication Date: 2009
Abstract:

MASSACHUSETTS AND RHODE ISLAND: The U.S. Army Corps of Engineers collects (by themselves and contractors) and maintains LiDAR data

including orthophotos in coastal areas of the United States and its territories. The Corps acquires this data in the

course of performing its mission of Flood Control, Navigation, Environmental Engineering, and support for the Army and others.

Topographic LIDAR datasets were collected using a SHOALS-1000T at 500m altitude, spot density of 2m x 1 m and sampling rate 10kHz.

Bathymetric data were collected using a SHOALS-1000T hydrographic laser flying at 400m altitude, spot spacing 5m x 5m and 1kHz

sampling rate.

MA and RI Data Date of Collection: Topo 20051111-20051202 Bathy: 20070527-20070601

MAINE: The U.S. Army Corps of Engineers collects (by themselves and contractors)and maintains LiDAR data including orthophotos

in coastal areas of the United States and its territories. Topographic LIDAR datasets were collected using a SHOALS-1000T at

500m altitude, spot density of 2m x 1m and sampling rate of 10 kHz. Topo data were also collected with a Leica ALS-50 sensor

at 1600m altitude spot spacing of 1m x 1m spot spacing, and 133 kHz sampling rate. Bathymetric data were collected using a

SHOALS-1000T hydrographic laser flying at 400m altitude, spot spacing 5m x 5m and 1kHz sampling rate.

ME Data Date of Collection: Topo 20051019-20070806 Bathy: 20070606-20070611

This data is not a bare earth dataset.

Original contact information:

Contact Org: JALBTCX

Title: Data Production Manager

Phone: 228-252-1103

Email: shoals-info@sam.usace.army.mil

Purpose:

The purpose of this survey was to obtain the existing conditions of the beach and near shore in support of the Joint

Airborne LIDAR Bathymetric Technical Center of Expertise National Coastal Mapping Program (NCMP).

Notes:

10696

Keywords

Theme Keywords

Thesaurus Keyword
ISO 19115 Topic Category
elevation

Temporal Keywords

Thesaurus Keyword
UNCONTROLLED
None 2005
None 2006
None 2007

Stratum Keywords

Thesaurus Keyword
UNCONTROLLED
None CHARTS
None JALBTCX
None Mobile District
None NCMP
None SHOALS
None U.S. Army Corps of Engineers

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
Distribution Liability:

Any conclusions drawn from the analysis of this information are not the responsibility of USACE, JALBTCX,

Fugro Pelagos, Inc, the Office for Coastal Management or its partners.

Data Set Credit: Acknowledgement of the Joint Airborne Lidar Bathymetry Technical Center of eXpertise (JALBTCX) would be appreciated in any publications or derived products.

Support Roles

Data Steward

CC ID: 688527
Date Effective From: 2009
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: 688529
Date Effective From: 2009
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: 688530
Date Effective From: 2009
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: 688528
Date Effective From: 2009
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: 1132788
W° Bound: -71.944389
E° Bound: -69.714932
N° Bound: 43.808611
S° Bound: 41.133922

Extent Group 1 / Time Frame 1

CC ID: 1132787
Time Frame Type: Range
Start: 2005-11-11
End: 2007-08-06

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.

Distribution Information

Distribution 1

CC ID: 742802
Download URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=116
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: 742803
Download URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/116/index.html
Distributor:
File Name: Bulk Download
Description:

Simple download of data files.

URLs

URL 1

CC ID: 742805
URL: https://coast.noaa.gov/dataviewer
URL Type:
Online Resource

URL 2

CC ID: 742806
URL: https://coast.noaa.gov
URL Type:
Online Resource

Activity Log

Activity Log 1

CC ID: 688552
Activity Date/Time: 2016-05-23
Description:

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 688551
Activity Date/Time: 2017-11-14
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

CC ID: 718656
Activity Date/Time: 2018-02-08
Description:

Partial upload of Positional Accuracy fields only.

Activity Log 4

CC ID: 742804
Activity Date/Time: 2018-03-13
Description:

Partial upload to move data access links to Distribution Info.

Data Quality

Accuracy:

These data are not attributed. | Quantitative Value: N/A | Quantitative Test Explanation: These data are not attributed.

Horizontal Positional Accuracy:

The data has been collected and compiled to meet a +/- 3m (2 sigma) accuracy specification.

Vertical Positional Accuracy:

The data has been collected and compiled to meet a +/- 30cm (2 sigma) accuracy specification.

Completeness Report:

See Process Step

Conceptual Consistency:

See Process Step

Lineage

Process Steps

Process Step 1

CC ID: 1132784
Description:

FOR MASSACHUSETTS AND RHODE ISLAND DATA

Acquisition

LIDAR data were acquired using a SHOALS-1000T. Sensor orientation was measured using a POS AV 410. Prior to survey PDOP was checked

and missions planned to avoid PDOP greater than 3.0. During survey the plane was always within 30km of a GPS ground control

point, to provide a good quality position solution. Final positions were determined using a post-processed inertially aided

Kinematic GPS (KGPS) solution. GPS ground control data were acquired at 1Hz.

Data received by the airborne system were continually monitored for data quality during acquisition operations. Display windows

showed coverage and information about the system status. In addition, center waveforms at 5Hz were shown. All of this

information allowed the airborne operator to assess the quality of data being collected.

Data were processed in the field to verify coverage and data quality.

Processing

SHOALS-1000T data were processed using the SHOALS Ground Control System (GCS). The GCS includes links to Applanix POSPac software

for GPS and inertial processing, and IVS Fledermaus software for data visualization, 3D editing and tie-line analysis.

All data were processed in NAD83 horizontal and vertical datum. Data were later converted to the NAVD88 vertical datum using the

GEOID03 model.

Fugro in-house utilities were used to split the data in to pre-defined boxes, each covering approximately 5km of shoreline.

ASCII files include Longitude, Latitude, UTM Zone, Easting (UTM), Northing, Elevation, Elevation (NAD83), Date, Time,

Intensity (Topo).

FOR MAINE DATA

Acquisition

Lidar data were acquired using a SHOALS-1000T. Sensor orientation was measured using a POS AV 410, while images were acquired at 1Hz

using a Duncantech DT4000 digital camera. Prior to survey PDOP was checked and missions planned to avoid PDOP greater than 3.0.

During survey the plane was always within 30km of a GPS ground control point, to provide a good quality position solution. Final

positions were determined using a post-processed inertially aided Kinematic GPS (KGPS) solution. GPS ground control data were

acquired at 1Hz.

Topographic Data were also acquired using a Leica ALS-50 operated by Fugro EarthData.

Processing

SHOALS data were processed using the SHOALS Ground Control System (GCS). The GCS includes links to Applanix POSPac software for GPS

and inertial processing, and IVS Fledermaus software for data visualization, 3D editing and tie-line analysis.

ALS-50 data were processed the TerraSolid Terrascan software. Applanix POSPac software was used for GPS and inertial processing.

All data were processed in NAD83 horizontal and vertical datum. Data were later converted to the NAVD88 vertical datum using the

GEOID03 model.

Fugro in-house utilities were used to split the data in to pre-defined boxes, each covering approximately 5km of shoreline.

ASCII files include Longitude, Latitude, UTM Zone, Easting (UTM), Northing, Elevation, Elevation (NAD83), Date, Time,

Intensity (Topo).

Process Date/Time: 2008-04-29 00:00:00

Process Step 2

CC ID: 1132785
Description:

The NOAA Office for Coastal Management (OCM) received topo and hydro files in ASCII format. The files

contained Lidar elevation and intensity measurements. Both the topo and hydro points were classed as 'never classified.'

The data were provided in Geographic coordinates and ellipsoid and orthometric heights. OCM performed the following processing

to the ellipsoid height data to make it available within the Digital Coast:

1. LASEdit was used to convert the ASCII formatted files to las format.

2. Both the topo and the hydro points were classified as 'never classified.' Hydro points were changed to class 11, 'water'

and topo points were changed to 'unclassified.'

3. The LAS data were sorted by latitude and the headers were updated.

4. The data were filtered to eliminate elevation outliers.

Process Date/Time: 2009-04-20 00:00:00

Catalog Details

Catalog Item ID: 50052
GUID: gov.noaa.nmfs.inport:50052
Metadata Record Created By: Anne Ball
Metadata Record Created: 2017-11-15 15:24+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2022-08-09 17:11+0000
Metadata Record Published: 2022-03-16
Owner Org: OCMP
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