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Short Citation:
OCM Partners, 2024: 2007 USACE NCMP Topobathy Lidar: Lake Erie (NY, PA), https://www.fisheries.noaa.gov/inport/item/56038.

Item Identification

Title: 2007 USACE NCMP Topobathy Lidar: Lake Erie (NY, PA)
Short Name: usace2007_erie_m8714_metadata
Status: Completed
Abstract:

The data contained in these files contain topographic data collected by the CHARTS system along Lake Erie in New York and Pennsylvania. The data points representing bare earth have been classified as such using TerraScan with results provided in the classified las files. Classification value "1" means "Unclassified", "29" valid bathymetric, and a value of "2" means "Ground."

Purpose:

These data were collected as a part of the National Coastal Mapping Program to depict the elevations above the water in the NY and PA coastal zone.

Keywords

Theme Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION
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
None beach
None erosion

Spatial Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Location Keywords
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > NEW YORK
Global Change Master Directory (GCMD) Location Keywords
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > PENNSYLVANIA
Global Change Master Directory (GCMD) Location Keywords
VERTICAL LOCATION > LAND SURFACE
Global Change Master Directory (GCMD) Location Keywords
VERTICAL LOCATION > SEA FLOOR

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
City: Charleston
State/Province: SC

Data Set Information

Data Set Scope Code: Data Set
Data Set Type: Elevation
Maintenance Frequency: As Needed
Data Presentation Form: Point Cloud (Digital)
Distribution Liability:

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: JALBTCX (Joint Airborne Lidar Bathymetry Technical Center of eXpertise)

Support Roles

Data Steward

CC ID: 833567
Date Effective From: 2019
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: 833568
Date Effective From: 2019
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: 833569
Date Effective From: 2019
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: 833570
Date Effective From: 2019
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: 1142188
W° Bound: -80.082396
E° Bound: -78.828683
N° Bound: 42.91122
S° Bound: 42.127891

Extent Group 1 / Time Frame 1

CC ID: 1142186
Time Frame Type: Range
Start: 2007-07-29
End: 2007-08-04
Description:

New York

Extent Group 1 / Time Frame 2

CC ID: 1142187
Time Frame Type: Range
Start: 2007-08-17
End: 2007-08-20
Description:

Pennsylvania

Access Information

Security Class: Unclassified
Data Access Procedure:

Data is available online for bulk and custom downloads.

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: 833574
Start Date: 2018
End Date: Present
Download URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=8714
Distributor:
File Name: Customized Download
Description:

Create custom data files by choosing data area, product type, map projection, file format, datum, etc. A new metadata will be produced to reflect your request using this record as a base.

Compression: Zip

Distribution 2

CC ID: 833575
Start Date: 2018
End Date: Present
Download URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/8714/index.html
Distributor:
File Name: Bulk Download
Description:

Bulk download of data files in LAZ format, geographic coordinates, orthometric heights. Note that the vertical datum (hence elevations) of the files here are different than described in this document.

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

URLs

URL 1

CC ID: 833562
URL: https://coast.noaa.gov/
Name: NOAA's Office for Coastal Management (OCM) website
URL Type:
Online Resource
File Resource Format: HTML
Description:

Information on the NOAA Office for Coastal Management (OCM)

URL 2

CC ID: 833563
URL: https://coast.noaa.gov/dataviewer/
Name: NOAA's Office for Coastal Management (OCM) Data Access Viewer (DAV)
URL Type:
Online Resource
File Resource Format: HTML
Description:

The Data Access Viewer (DAV) allows a user to search for and download elevation, imagery, and land cover data for the coastal U.S. and its territories. The data, hosted by the NOAA Office for Coastal Management, can be customized and requested for free download through a checkout interface. An email provides a link to the customized data, while the original data set is available through a link within the viewer.

URL 3

CC ID: 833564
URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/8714/supplemental/usace2007_erie_m8714.kmz
Name: Browse graphic
URL Type:
Browse Graphic
File Resource Format: KML
Description:

This graphic displays the footprint for this lidar data set.

Technical Environment

Description:

Microsoft Windows 2000 Version 5.2 (Build 3790) Service Pack 2; ESRI ArcCatalog 9.2.6.1500

Data Quality

Horizontal Positional Accuracy:

The data positions were obtained using post processed KGPS methods. The horizontal accuracy of the data is better than +/- 0.75 m at 1 Sigma.

Vertical Positional Accuracy:

The data positions were obtained using post processed KGPS methods. The vertical accuracy of the data is better than +/- 0.20 m at 1 Sigma.

Conceptual Consistency:

The data provided in this file were tested against ground truth data. At these locations the lidar data matched within 0.20 meters, and different flight line data agreed within 0.20 meters.

Lineage

Process Steps

Process Step 1

CC ID: 1142183
Description:

These data were collected using the CHARTS surveys system. It is owned by the Naval Oceanographic Office and Operated through contract. The system collects topographic lidar data at 20kHz and hydrographic data at 3kHz. The system also collects RGB imagery at 1Hz. 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 equipment.

Raw data are collected and transferred to the office for downloading and processing in SHOALS GCS software. GPS data are processed using POSPac software and the results are combined with the lidar data to produce 3-D positions for each lidar shot. These data are edited using Fledermaus software where anomalous data are removed from the dataset.

The data are converted from ellipsoid to orthometric heights, based

on the GEOID03 model, within the chartsLAS program. The heights were converted from ellipsoid to orthometric heights (NAVD88) using NGS' Geoid03 model file "g2003u08.bin" with the results in meters. Once converted to orthometric heights, the data were then converted to IGLD85 using the VDatum program from NOAA (National Oceanic and Atmospheric Administration). The LAS files output form chartsLAS were read into TerraScan and filters were applied to classify ground points. Points designated as ground are assigned a classification value "2" and all other points are assigned the classification value "1" which represents an unclassified state. Once classified, the points were exported through TerraScan and converted to .las format.

Process Step 2

CC ID: 1142184
Description:

This data set was received from JALBTCX in 2018. This is 2007 data that JALBTCX reprocessed (converted to las format and reclassed to 1 - Unclassified, 2 - Ground, and 29 - Bathymetric Point).

The NOAA Office for Coastal Management (OCM) received 23 las files from USACE JALBTCX. The lidar data had elevation and intensity measurements. The data were in geographic coordinates and IGLD85 elevations in meters. The data were classified as: 1 - Unclassified, 2 - Ground, 29 - Bathymetric Point. OCM processed all classifications of points to the Digital Coast Data Access Viewer (DAV). Classes available on the DAV are: 1, 2, 29.

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

1. The LAStools software scripts lasinfo and lasvalidate were run on the las files to check for errors.

2. An internal OCM script was run to check the number of points by classification and by flight ID and the gps time and intensity ranges.

3. The LAStools software script laszip was run to convert the las files to laz format.

4. The files were converted from IGLD85 to NAVD88 (Geoid12b) elevations using the NOAA VDatum tool.

5. Internal OCM scripts were run on the laz files to convert from NAVD88 elevations to ellipsoid elevations using Geoid12b, assign the geokeys, to sort the data by gps time and zip the data to database and to http.

Process Date/Time: 2019-04-12 00:00:00
Process Contact: Office for Coastal Management (OCM)

Catalog Details

Catalog Item ID: 56038
GUID: gov.noaa.nmfs.inport:56038
Metadata Record Created By: Rebecca Mataosky
Metadata Record Created: 2019-04-12 13:20+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2023-10-17 16:12+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