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Data Set Info
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Spatial Info
Access Info
Distribution Info
URLs
Activity Log
Tech Environment
Data Quality
Lineage
Related Items
Catalog Details

Summary

Browse Graphic

Short Citation
OCM Partners, 2024: 2012 USACE NCMP Post-Sandy Topobathy Lidar: Long Island, NY, https://www.fisheries.noaa.gov/inport/item/49608.
Full Citation Examples

Abstract

TASK ORDER NAME: EASTERN LONG ISLAND, NEW YORK LIDAR ACQUISITION FOR SANDY RESPONSE

CONTRACT NUMBER: W912P9-10-D-0533

TASK ORDER NUMBER: W81C8X23208588

Woolpert Project Number: 72903

USACE required high-resolution digital elevation data developed from airborne LiDAR technology for the Eastern Long Island, New York. The Area of Interest (AOI) consisted of one hundred sixteen (116) square miles in the

North Atlantic Division.

The final deliverables are listed below. The final LiDAR data was delivered in a UTM projection tiling format, based on a modular layout. The tiles were clipped to eliminate overlap between adjacent tiles.

The 1000 meter x 1000 meter tile file name was derived from the National Grid naming convention.

The data originally was collected with the following specifications: LAS v1.2 classified point cloud NAD83 UTM Zone 18N Meters, NAVD88 GEOID12A Meters.

Original contact information:

Contact Org: US Army Engineers District St. Louis

Phone: 314-331-8389

In addition to these lidar point data, the bare earth Digital Elevation Models (DEM) created from the lidar point data 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, product type, map projection, file format, datum, etc.

  • LAS/LAZ - LASer

    Simple download of data files.

Access Constraints:

None

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be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions.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.

Controlled Theme Keywords

elevation

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

Metadata Contact
NOAA Office for Coastal Management (NOAA/OCM)
coastal.info@noaa.gov
(843) 740-1202

Extents

Geographic Area 1

-72.754241° W, -71.855068° E, 41.149619° N, 40.762295° S

Time Frame 1
2012-11-14
Time Frame 2
2012-11-15

Item Identification

Title: 2012 USACE NCMP Post-Sandy Topobathy Lidar: Long Island, NY
Short Name: 2012_USACE_PostSandy_LongIsland_m1436_metadata
Status: Completed
Publication Date: 2013-01
Abstract:

TASK ORDER NAME: EASTERN LONG ISLAND, NEW YORK LIDAR ACQUISITION FOR SANDY RESPONSE

CONTRACT NUMBER: W912P9-10-D-0533

TASK ORDER NUMBER: W81C8X23208588

Woolpert Project Number: 72903

USACE required high-resolution digital elevation data developed from airborne LiDAR technology for the Eastern Long Island, New York. The Area of Interest (AOI) consisted of one hundred sixteen (116) square miles in the

North Atlantic Division.

The final deliverables are listed below. The final LiDAR data was delivered in a UTM projection tiling format, based on a modular layout. The tiles were clipped to eliminate overlap between adjacent tiles.

The 1000 meter x 1000 meter tile file name was derived from the National Grid naming convention.

The data originally was collected with the following specifications: LAS v1.2 classified point cloud NAD83 UTM Zone 18N Meters, NAVD88 GEOID12A Meters.

Original contact information:

Contact Org: US Army Engineers District St. Louis

Phone: 314-331-8389

In addition to these lidar point data, the bare earth Digital Elevation Models (DEM) created from the lidar point data are also available. These data are available for custom download at the link provided in the URL section of this metadata record.

Purpose:

The data will be used by the USACE to generate digital elevation models and contours for use in, damage assessment to USACE projects, engineering design and design reviews, conservation planning, research, delivery,

floodplain mapping, and hydrologic modeling utilizing LiDAR technology. The task order required that the LiDAR data was to be acquired within six (6) days of receiving Notice to Proceed (NTP). The project data will consist of

high accuracy classified bare-earth LiDAR data in LAS format well as raster digital elevation models per task order requirements. The specifications are based upon the U.S. Geological Survey National Geospatial Program Lidar

Base Specifications 1.0, which may be viewed at http://pub.usgs.gov/tm/11b4/.

Notes:

10252

Supplemental Information:

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

https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/1436/supplemental/2012_USACE_PostSandy_LongIsland_footprint.KMZ

Keywords

Theme Keywords

Thesaurus Keyword
ISO 19115 Topic Category
elevation

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: las
Distribution Liability:

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

of Woolpert, USACE, USGS, NOAA, the Office for Coastal Management or its partners.

Support Roles

Data Steward

CC ID: 669678
Date Effective From: 2013-01
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: 669680
Date Effective From: 2013-01
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: 669681
Date Effective From: 2013-01
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: 669679
Date Effective From: 2013-01
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: 1133450
W° Bound: -72.754241
E° Bound: -71.855068
N° Bound: 41.149619
S° Bound: 40.762295

Extent Group 1 / Time Frame 1

CC ID: 1133448
Time Frame Type: Discrete
Start: 2012-11-14

Extent Group 1 / Time Frame 2

CC ID: 1133449
Time Frame Type: Discrete
Start: 2012-11-15

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/#/lidar/search/where:ID=1436

;

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

CC ID: 740307
Download URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=1436
Distributor: NOAA Office for Coastal Management (NOAA/OCM) (2013-01 - Present)
File Name: Customized Download
Description:

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

File Type (Deprecated): Zip
Compression: Zip

Distribution 2

CC ID: 740308
Download URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/1436/index.html
Distributor: NOAA Office for Coastal Management (NOAA/OCM) (2013-01 - Present)
File Name: Bulk Download
Description:

Simple download of data files.

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

URLs

URL 1

CC ID: 740310
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 2

CC ID: 740311
URL: https://coast.noaa.gov
Name: NOAA's Office for Coastal Management (OCM) website
URL Type:
Online Resource
File Resource Format: HTML
Description:

Information about the NOAA Office for Coastal Management (OCM)

URL 3

CC ID: 740312
URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/1436/supplemental/2012_USACE_PostSandy_LongIsland_footprint.KMZ
Name: Browse Graphic
URL Type:
Browse Graphic
File Resource Format: kmz
Description:

This graphic shows the post Sandy LiDAR coverage for eastern Long Island, New York

URL 4

CC ID: 1096609
URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=9427/details/9427
Name: Custom DEM Download
URL Type:
Online Resource
File Resource Format: Zip
Description:

Link to custom download, from the Data Access Viewer (DAV), the raster Digital Elevation Model (DEM) data that were created from this lidar data set.

Activity Log

Activity Log 1

CC ID: 669694
Activity Date/Time: 2016-05-23
Description:

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 669693
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: 718049
Activity Date/Time: 2018-02-08
Description:

Partial upload of Positional Accuracy fields only.

Activity Log 4

CC ID: 740309
Activity Date/Time: 2018-03-13
Description:

Partial upload to move data access links to Distribution Info.

Technical Environment

Description:

Microsoft Windows Vista Version 6.1 (Build 7600) ; TerraSolid LTD: Terrascan Version 11.01

Data Quality

Horizontal Positional Accuracy:

Horizontal accuracy is +/- 0.304m at the 95% confidence level.; Quantitative Value: 0.304 meters, Test that produced the value: Units in meters. LiDAR system calibration is available upon request from Woolpert, Inc.

Vertical Positional Accuracy:

The LAS data for the LiDAR Acquisition for Sandy Response East Long island Area of Interest was compared to survey control points to determine the FVA of the LAS Swath and of the Bare- Earth DEM.

LAS Swath Fundamental Vertical Accuracy (FVA) Tested 0.082m (8.2cm) fundamental vertical accuracy at a 95 percent confidence level, derived according to NSSDA, in open terrain using 0.041m (4.1cm) (RMSEz x 1.96000,

tested against the TIN. Bare-Earth DEM Fundamental Vertical Accuracy (FVA) Tested 0.082m (8.2cm) fundamental vertical accuracy at a 95 percent confidence level, derived according to NSSDA, in open terrain using 0.041m (4.1cm)

(RMSEz x 1.96000, tested against the DEM).

; Quantitative Value: 0.082 meters, Test that produced the value:

LAS Swath Fundamental Vertical Accuracy (FVA) Tested 0.082m (8.2cm) fundamental vertical accuracy at a 95 percent confidence level, derived according to NSSDA, in open terrain using 0.043m (4.3cm) RMSEz x 1.96000,

tested against the TIN

; Quantitative Value: 0.082 meters, Test that produced the value:

Units in meters. Bare-Earth DEM Fundamental Vertical Accuracy (FVA) Tested 0.082m (8.2cm) fundamental vertical accuracy at a 95 percent confidence level, derived according to NSSDA, in open terrain using 0.043m (4.3cm)

RMSEz x 1.96000, tested against the DEM.

Completeness Measure:

Cloud Cover: 0

Completeness Report:

Complete

Conceptual Consistency:

The data is visually inspected by Woolpert, Inc.

Lineage

Lineage Statement:

The USACE collected, processed, and provided the data to the NOAA Office for Coastal Management (OCM). OCM received the data and processed it to be available for custom download from the Data Access Viewer (DAV) and for bulk download from https.

Sources

USACE JALBTCX

CC ID: 1133441
Contact Role Type: Originator
Contact Type: Organization
Contact Name: USACE JALBTCX

Process Steps

Process Step 1

CC ID: 1133442
Description:

Using an Optech Gemini LiDAR Sensor, 21 flight lines of high density data, at a nominal pulse spacing (NPS) of 1 meter, were collected along the Eastern Long Island, New York (approximately one hundred sixteen (116) square

miles). Data Acquisition Height = 5,500 feet AGL - Aircraft Speed = 125 Knots. Multiple returns were recorded for each laser pulse along with an intensity value for each return. A total of two (2) missions were flown during a

period from November 14, 2012 through November 15, 2012. One airborne global positioning system (GPS) base station was used in support of the LiDAR data acquisition. Eighteen (18) ground control points were surveyed through

static methods. The geoid used to reduce satellite derived elevations to orthometric heights was Geoid12A. Data for the task order is referenced to the UTM Zone 18N, North American Datum of 1983 (NAD83), and NAVD88, in Meters.

Airborne GPS data was differentially processed and integrated with the post processed IMU data to derive a smoothed best estimate of trajectory (SBET). The SBET was used to reduce the LiDAR slant range measurements to a raw

reflective surface for each flight line. The coverage was classified to extract a bare earth digital elevation model (DEM) and separate last returns. In addition to the LAS deliverables, one layer of coverage was delivered in

the ArcGrid Format: bare-earth.

Process Date/Time: 2012-11-14 00:00:00

Process Step 2

CC ID: 1133443
Description:

The LiDAR system calibration and system performance is verified on a periodic basis using Woolpert's calibration range. The calibration range consists of a large building and runway. The edges of the building and control points

along the runway have been located using conventional survey methods. Inertial measurement unit (IMU) misalignment angles and horizontal accuracy are calculated by comparing the position of the building edges between opposing

flight lines. The scanner scale factor and vertical accuracy is calculated through comparison of LiDAR data against control points along the runway. Field calibration is performed on all flight lines to refine the IMU

misalignment angles. IMU misalignment angles are calculated from the relative displacement of features within the overlap region of adjacent (and opposing) flight lines. The raw LiDAR data is reduced using the refined

misalignment angles.

Process Date/Time: 2012-01-01 00:00:00

Process Step 3

CC ID: 1133444
Description:

Once the data acquisition and GPS processing phases are complete, the LiDAR data was processed immediately to verify the coverage had no voids. The GPS and IMU data was post processed using differential and Kalman filter

algorithms to derive a best estimate of trajectory. The quality of the solution was verified to be consistent with the accuracy requirements of the project.

Process Date/Time: 2012-11-16 00:00:00

Process Step 4

CC ID: 1133445
Description:

The individual flight lines were inspected to ensure the systematic and residual errors have been identified and removed. Then, the flight lines were compared to adjacent flight lines for any mismatches

to obtain a homogenous coverage throughout the project area. The point cloud underwent a classification process to determine bare-earth points and non-ground points utilizing "first and only" as well as "last of many" LiDAR

returns. This process determined Default (Class 1), Ground (Class 2),Noise (Class 7), Model Key Points (Class 8), and Overlap (Class 12) classifications. The bare-earth (Class 2 - Ground) LiDAR points underwent a manual QA/QC

step to verify that artifacts have been removed from the bare-earth surface. The surveyed ground control points are used to perform the accuracy checks and statistical analysis of the LiDAR dataset.

Process Date/Time: 2012-11-16 00:00:00

Process Step 5

CC ID: 1133446
Description:

The NOAA Office for Coastal Management (OCM) received topographic files in LAS format. The files contained lidar

elevation and intensity measurements. The data were received in NAD83 UTM18N, meters Projected Coordinates

and were vertically referenced to NAVD88 using the Geoid12a model. The vertical units of the data were

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

1. The topographic las files were converted from orthometric (NAVD88) heights to ellipsoidal heights using Geoid12a.

2. The topographic las files were converted from Projected Coordinates (Nad83 UTM18N, meters) to Geographic Coordinates (NAD83, decimal degrees).

Process Date/Time: 2013-01-01 00:00:00
Process Contact: Office for Coastal Management (OCM)

Related Items

Item Type Relationship Type Title
Data Set (DS) Cross Reference 2012 USACE NCMP Post-Sandy Topobathy Lidar DEM: Long Island, NY

Catalog Details

Catalog Item ID: 49608
GUID: gov.noaa.nmfs.inport:49608
Metadata Record Created By: Anne Ball
Metadata Record Created: 2017-11-15 15:21+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