2015 DVRPC Lidar: Delaware Valley - 5A, PA

OCM Partners
Data Set (DS) | ID: 60131 | Published / External
Created: 2020-06-25   |   Last Modified: 2023-10-17

Parent: Lidar - partner (no harvest)
Project (PRJ) | ID: 49401

ID: 60131
Data Set (DS)

* Discovery
• First Pass
» Metadata Rubric

Item Identification

* » Title 2015 DVRPC Lidar: Delaware Valley - 5A, PA
Short Name pa2015_del_valley_m9122_metadata
* Status Completed
Creation Date 2015
Revision Date  
• Publication Date 2015
* » Abstract

Geographic Extent: This data set is part of a larger collection of the Delaware Valley, covering approximately 3260 square miles over the Philadelphia Metro area, comprised of of 8 contiguous counties located in the states of Pennsylvania and New Jersey. This data set was a re-flight, flown on November 25, 2015, after the initial collection of the larger data set in April 2015. This area was re-flown due to weather and leaf pop. This data set covers an area in Delaware, Montgomery, and Philadelphia Counties, PA.

Dataset Description: Delaware Valley 2015 LiDAR project called for the Planning, Acquisition, processing and derivative products of LIDAR data to be collected at a nominal pulse spacing (NPS) of 0.7 meter. Project specifications are based on the U.S. Geological Survey National Geospatial Program Base LIDAR Specification, Version 1.2. The data was developed based on a horizontal projection/datum of UTM Zone 18, NAD83 (2011), meters and vertical datum of NAVD1988 (GEOID12A), meters. LiDAR data was delivered in RAW flight line swath format, processed to create Classified LAS 1.4 Files formatted to 25 individual 1500 meter X 1500 meter tiles for the pilot (3752 individual 1500 meter X 1500 meter tiles for the entire project area), Bare Earth DEMs tiled to the same 1500 meter X 1500 meter tile schema, and Breaklines in Esri shapefile format.

Ground Conditions: LiDAR was collected in spring of 2015, while no snow was on the ground and rivers were at or below normal levels. The re-flight area was collected in November 2015. In order to post process the LiDAR data to meet task order specifications, Quantum Spatial established a total of 155 Land Cover control points that were used to calibrate the LIDAR to known ground locations established throughout the Delaware Valley project area (75 calibration control points).

The NOAA Office for Coastal Management (OCM) downloaded this data set from this USGS site:

ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/USGS_LPC_DE_DelawareValleyHD_5A_2015_LAS_2017

These files were processed to the Data Access Viewer (DAV) and https. The total number of laz files downloaded and processed was 167.

The breaklines were also downloaded and are available for download at the link provided in the URL section of this metadata record. Please note that this product has not been reviewed by the NOAA Office for Coastal Management (OCM) and any conclusions drawn from the analysis of this information are not the responsibility of NOAA or OCM.
* Purpose

Classified LAS files are used to show the manually reviewed bare earth surface. This allows the user to create Breaklines and Raster. The purpose of these lidar data was to produce high accuracy 3D hydro-flattened Digital Elevation Model (DEM) with a 1-meter cell size. These raw lidar point cloud data were used to create classified lidar LAS files, 3D breaklines, and hydro-flattened DEMs as necessary.
Notes
Other Citation Details
• Supplemental Information

USGS Contract: G10PC00026 Task Order Number: G15PD00316

CONTRACTOR: Quantum Spatial

Lidar data were acquired and calibrated by Quantum Spatial.

All follow-on processing was completed by the prime contractor.

The following are the USGS lidar fields in JSON:

{

"ldrinfo" : {

"ldrspec" : "USGS-NGP Base Lidar Specification v1.2",

"ldrsens" : "ALS80-HP-8239",

"ldrmaxnr" : "4",

"ldrnps" : "0.34",

"ldrdens" : "8.05",

"ldranps" : "0.34",

"ldradens" : "8.05",

"ldrfltht" : "1541",

"ldrfltsp" : "150",

"ldrscana" : "18.0",

"ldrscanr" : "40.5",

"ldrpulsr" : "695.80",

"ldrpulsd" : "4",

"ldrpulsw" : "0.40",

"ldrwavel" : "1064",

"ldrmpia" : "1",

"ldrbmdiv" : "0.22",

"ldrswatw" : "1023.50",

"ldrswato" : "19.68",

"ldrgeoid" : "National Geodetic Survey (NGS) Geoid12A"

},

"ldrinfo31E" : {

"ldrspec" : "USGS-NGP Base Specification v1.2",

"ldrsens" : "ALS80-HP-8239",

"ldrmaxnr" : "4",

"ldrnps" : "0.34",

"ldrdens" : "8.00",

"ldranps" : "0.34",

"ldradens" : "8.00",

"ldrfltht" : "1580",

"ldrfltsp" : "150",

"ldrscana" : "18.0",

"ldrscanr" : "40.5",

"ldrpulsr" : "693.60",

"ldrpulsd" : "4",

"ldrpulsw" : "0.40",

"ldrwavel" : "1064",

"ldrmpia" : "1",

"ldrbmdiv" : "0.22",

"ldrswatw" : "1026.75",

"ldrswato" : "19.43",

"ldrgeoid" : "National Geodetic Survey (NGS) Geoid12A"

},

"ldrinfoCKZ" : {

"ldrspec" : "USGS-NGP Base Specification v1.2",

"ldrsens" : "ALS80-HP-8239",

"ldrmaxnr" : "4",

"ldrnps" : "0.34",

"ldrdens" : "7.65",

"ldranps" : "0.34",

"ldradens" : "7.65",

"ldrfltht" : "1599",

"ldrfltsp" : "150",

"ldrscana" : "14.5",

"ldrscanr" : "26.0",

"ldrpulsr" : "532.40",

"ldrpulsd" : "4",

"ldrpulsw" : "0.40",

"ldrwavel" : "1064",

"ldrmpia" : "1",

"ldrbmdiv" : "0.22",

"ldrswatw" : "814.65",

"ldrswato" : "24.91",

"ldrgeoid" : "National Geodetic Survey (NGS) Geoid12A"

},

"ldrinfoLOM" : {

"ldrspec" : "USGS-NGP Base Specification v1.2",

"ldrsens" : "ALS80-HP-8239",

"ldrmaxnr" : "4",

"ldrnps" : "0.34",

"ldrdens" : "7.85",

"ldranps" : "0.34",

"ldradens" : "7.85",

"ldrfltht" : "1774",

"ldrfltsp" : "150",

"ldrscana" : "14.5",

"ldrscanr" : "51.0",

"ldrpulsr" : "623.20",

"ldrpulsd" : "4",

"ldrpulsw" : "0.46",

"ldrwavel" : "1064",

"ldrmpia" : "1",

"ldrbmdiv" : "0.22",

"ldrswatw" : "931.02",

"ldrswato" : "23.10",

"ldrgeoid" : "National Geodetic Survey (NGS) Geoid12A"

},

"ldrinfoOQN" : {

"ldrspec" : "USGS-NGP Base Specification v1.2",

"ldrsens" : "ALS80-HP-8239",

"ldrmaxnr" : "4",

"ldrnps" : "0.34",

"ldrdens" : "7.70",

"ldranps" : "0.34",

"ldradens" : "7.70",

"ldrfltht" : "1765",

"ldrfltsp" : "150",

"ldrscana" : "14.8",

"ldrscanr" : "51.0",

"ldrpulsr" : "622.40",

"ldrpulsd" : "4",

"ldrpulsw" : "0.46",

"ldrwavel" : "1064",

"ldrmpia" : "1",

"ldrbmdiv" : "0.22",

"ldrswatw" : "947.80",

"ldrswato" : "22.76",

"ldrgeoid" : "National Geodetic Survey (NGS) Geoid12A"

},

"ldrinfo_downtown" : {

"ldrspec" : "USGS-NGP Base Specification v1.2",

"ldrsens" : "ALS80-HP-8239",

"ldrmaxnr" : "4",

"ldrnps" : "0.34",

"ldrdens" : "7.79",

"ldranps" : "0.34",

"ldradens" : "7.79",

"ldrfltht" : "1555",

"ldrfltsp" : "150",

"ldrscana" : "14.0",

"ldrscanr" : "57.0",

"ldrpulsr" : "528.80",

"ldrpulsd" : "4",

"ldrpulsw" : "0.40",

"ldrwavel" : "1064",

"ldrmpia" : "1",

"ldrbmdiv" : "0.22",

"ldrswatw" : "792.86",

"ldrswato" : "24.57",

"ldrgeoid" : "National Geodetic Survey (NGS) Geoid12A"

},

"ldrinfoVAY" : {

"ldrspec" : "USGS-NGP Base Specification v1.2",

"ldrsens" : "ALS80-HP-8239",

"ldrmaxnr" : "4",

"ldrnps" : "0.34",

"ldrdens" : "8.00",

"ldranps" : "0.34",

"ldradens" : "8.00",

"ldrfltht" : "1546",

"ldrfltsp" : "150",

"ldrscana" : "18.0",

"ldrscanr" : "40.5",

"ldrpulsr" : "693.60",

"ldrpulsd" : "4",

"ldrpulsw" : "0.40",

"ldrwavel" : "1064",

"ldrmpia" : "1",

"ldrbmdiv" : "0.22",

"ldrswatw" : "1026.75",

"ldrswato" : "19.69",

"ldrgeoid" : "National Geodetic Survey (NGS) Geoid12A"

},

"ldrinfoN87" : {

"ldrspec" : "USGS-NGP Base Specification v1.2",

"ldrsens" : "ALS80-HP-8239",

"ldrmaxnr" : "4",

"ldrnps" : "0.34",

"ldrdens" : "7.95",

"ldranps" : "0.34",

"ldradens" : "7.95",

"ldrfltht" : "1356",

"ldrfltsp" : "150",

"ldrscana" : "17.5",

"ldrscanr" : "47.5",

"ldrpulsr" : "591.00",

"ldrpulsd" : "4",

"ldrpulsw" : "0.35",

"ldrwavel" : "1064",

"ldrmpia" : "1",

"ldrbmdiv" : "0.22",

"ldrswatw" : "876.53",

"ldrswato" : "21.65",

"ldrgeoid" : "National Geodetic Survey (NGS) Geoid12A"

},

"ldraccur" : {

"ldrchacc" : "0.196",

"rawnva" : "0.082",

"rawnvan" : "87",

"clsnva" : "0.080",

"clsnvan" : "87",

"clsvva" : "0.265",

"clsvvan" : "68"

},

"lasinfo" : {

"lasver" : "1.4",

"lasprf" : "6",

"laswheld" : "Withheld (ignore) points were identified in these files using the standard LAS Withheld bit",

"lasolap" : "Swath "overage" points were identified in these files using the standard LAS overlap bit",

"lasintr" : "11-bit",

"lasclass" : {

"clascode" : "1",

"clasitem" : "Processed but unclassified"

},

"lasclass" : {

"clascode" : "2",

"clasitem" : "Bare earth ground"

},

"lasclass" : {

"clascode" : "7",

"clasitem" : "Low noise"

},

"lasclass" : {

"clascode" : "8",

"clasitem" : "Model Key Point"

},

"lasclass" : {

"clascode" : "9",

"clasitem" : "Water"

},

"lasclass" : {

"clascode" : "10",

"clasitem" : "Ignored Ground"

},

"lasclass" : {

"clascode" : "17",

"clasitem" : "Bridge Decks"

},

"lasclass" : {

"clascode" : "18",

"clasitem" : "High noise"

}

}}
DOI (Digital Object Identifier)  
DOI Registration Authority  
DOI Issue Date  

Keywords

Theme Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION
ISO 19115 Topic Category elevation
None erosion
None Hydrology
   
   
   

Temporal Keywords

Thesaurus Keyword
   
   
   

* 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 > PENNSYLVANIA
Global Change Master Directory (GCMD) Location Keywords VERTICAL LOCATION > LAND SURFACE
None Continent > North America > United States Of America > Pennsylvania > Delaware County
None Continent > North America > United States Of America > Pennsylvania > Philadelphia County
None Continent > North America > United States Of America > Pennsylvania> Montgomery County
   
   
   

Stratum Keywords

Thesaurus Keyword
   
   
   

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
• Country  
• » Location Description

Data Set Information

* Data Set Scope Code Data Set
• Data Set Type Elevation
• Maintenance Frequency None Planned
Maintenance Note
» Data Presentation Form Model (digital)
• Entity Attribute Overview
Entity Attribute Detail Citation
Entity Attribute Detail URL  
Distribution Liability

Any conclusions drawn from the analysis of this information are not the responsibility of DVRPC, USGS, NOAA, the Office for Coastal Management or its partners.
Data Set Credit Quantum Spatial, Delaware Valley Regional Planning Commission

Support Roles

» At least one Distributor Org, one Metadata Contact, one Point of Contact, and one Data Steward should be listed.
* » Support Role Data Steward
* » Date Effective From 2020
Date Effective To
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
Fax  
Mobile  
URL https://coast.noaa.gov
Business Hours  
Contact Instructions
* » Support Role Distributor
* » Date Effective From 2020
Date Effective To
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
Fax  
Mobile  
URL https://coast.noaa.gov
Business Hours  
Contact Instructions
* » Support Role Metadata Contact
* » Date Effective From 2020
Date Effective To
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
Fax  
Mobile  
URL https://coast.noaa.gov
Business Hours  
Contact Instructions
* » Support Role Point of Contact
* » Date Effective From 2020
Date Effective To
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
Fax  
Mobile  
URL https://coast.noaa.gov
Business Hours  
Contact Instructions
* » Support Role
* » Date Effective From
Date Effective To
* » Contact
* Contact Instructions
* » Support Role
* » Date Effective From
Date Effective To
* » Contact
* Contact Instructions
* » Support Role
* » Date Effective From
Date Effective To
* » Contact
* Contact Instructions

Extents

Currentness Reference Ground Condition

Extent Group 1

Extent Description

Extent Group 1 / Geographic Area 1

* » W° Bound -75.619684
* » E° Bound -75.181523
* » N° Bound 40.015516
* » S° Bound 39.838447
* » Description

Extent Group 1 / Vertical Extent

EPSG Code
Vertical Minimum
Vertical Maximum

Extent Group 1 / Time Frame 1

* » Time Frame Type Discrete
* » Start 2015-11-25
End  
Alternate Start As Of Info  
Alternate End As Of Info  
Description

Spatial Information

Spatial Resolution

Angular Distance  
Angular Distance Units  
Horizontal Distance  
Horizontal Distance Units  
Vertical Distance  
Vertical Distance Units  
Equivalent Scale Denominator  
Level of Detail Description

Spatial Representation

Grid Representation Used? No
Vector Representation Used? Yes
Text / Table Representation Used? No
TIN Representation Used? No
Stereo Model Representation Used? No
Video Representation Used? No

Grid Representation

Dimension Count
Cell Geometry
Transformation Parameter Available?  

Axis Dimension
Dimension Type
Size
Resolution
Resolution Units
Resolution Type
Description

Axis Dimension
Dimension Type
Size
Resolution
Resolution Units
Resolution Type
Description

Vector Representation

Topology Level  
Complex Object Present?  
Complex Object Count  
Composite Object Present?  
Composite Object Count  
Curve Object Present?  
Curve Object Count  
Point Object Present? Yes
Point Object Count 1967309968
Solid Object Present?  
Solid Object Count  
Surface Object Present?  
Surface Object Count  

Vector Representation

Topology Level
Complex Object Present?  
Complex Object Count
Composite Object Present?  
Composite Object Count
Curve Object Present?  
Curve Object Count
Point Object Present?  
Point Object Count
Solid Object Present?  
Solid Object Count
Surface Object Present?  
Surface Object Count

Reference Systems

Reference System

EPSG Code EPSG:6319

Horizontal Resolution
Horizontal Encoding Method  
Latitude Resolution  
Longitude Resolution  
Coordinate X Resolution  
Coordinate Y Resolution  
Row Resolution  
Column Resolution  
Horizontal Units  
Distance Resolution  
Distance Units  
Bearing Resolution  
Bearing Units  
Reference Direction  
Reference Meridian  

Vertical Resolution
Vertical Encoding Method  
Vertical Resolution  
Vertical Units  

Reference System

EPSG Code

Horizontal Resolution
Horizontal Encoding Method
Latitude Resolution
Longitude Resolution
Coordinate X Resolution
Coordinate Y Resolution
Row Resolution
Column Resolution
Horizontal Units
Distance Resolution
Distance Units
Bearing Resolution
Bearing Units
Reference Direction
Reference Meridian

Vertical Resolution
Vertical Encoding Method
Vertical Resolution
Vertical Units

Access Information

Data License  
Data License URL  
Data License Statement
* » Security Class Unclassified
* Security Classification System
Security Handling Description
• Data Access Policy
» 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.
Metadata Access Constraints
Metadata Use Constraints

Distribution Information

Start Date 2020-06-25
End Date Present
» Download URL https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=9122/details/9122
Distributor NOAA Office for Coastal Management (NOAA/OCM) (2020 - Present)
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. Change to an orthometric vertical datum is one of the many options.
File Date/Time  
File Type (Deprecated) Zip
Distribution Format  
File Size  
Application Version  
Compression Zip
Review Status  
Start Date 2020-06-25
End Date Present
» Download URL https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9122/index.html
Distributor NOAA Office for Coastal Management (NOAA/OCM) (2020 - Present)
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. They will be in an orthometric datum.
File Date/Time  
File Type (Deprecated) LAZ
Distribution Format LAS/LAZ - LASer
File Size  
Application Version  
Compression Zip
Review Status  
Start Date
End Date
» Download URL
Distributor
File Name
Description
File Date/Time
File Type
FGDC Content Type
File Size
Application Version
Compression
Review Status
Start Date
End Date
» Download URL
Distributor
File Name
Description
File Date/Time
File Type
FGDC Content Type
File Size
Application Version
Compression
Review Status
Start Date
End Date
» Download URL
Distributor
File Name
Description
File Date/Time
File Type
FGDC Content Type
File Size
Application Version
Compression
Review Status

Archive Information

Location
File Identifier
File Name
URL
Description
DOI
Archive Date
Archive Update Frequency
Location
File Identifier
File Name
URL
Description
DOI
Archive Date
Archive Update Frequency
Location
File Identifier
File Name
URL
Description
DOI
Archive Date
Archive Update Frequency

URLs

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 https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9122/supplemental/pa2015_del_vall_5a_m9122.kmz
Name Browse graphic
URL Type Browse Graphic
File Resource Format KML
Description

This graphic displays the footprint for this lidar data set.
URL https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9122/supplemental/26236_DVRPC_ProjectReport.pdf
Name Dataset report
URL Type Online Resource
File Resource Format PDF
Description

Link to data set report.
URL https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9122/breaklines/
Name Breaklines
URL Type Online Resource
File Resource Format  
Description

Link to data set breaklines.
URL
Name
URL Type
File Resource Format
Description
URL
Name
URL Type
File Resource Format
Description
URL
Name
URL Type
File Resource Format
Description

Activity Log

Activity Time
Activity Type
Responsible Party
Description
Activity Time
Activity Type
Responsible Party
Description
Activity Time
Activity Type
Responsible Party
Description

Issues

Issue Date
Author
Issue
Issue Date
Author
Issue
Issue Date
Author
Issue

Technical Environment

Description

MicroStation Version 8; TerraScan Version 15; TerraModeler Version 15; GeoCue Version 2014.1.21.1; ESRI ArcGIS 10.2; Global Mapper 16; Leica Cloud Pro 1.2; Windows 7 Operating System

\\psihq_nx3200\Projects\26236_DVRPC_LiDAR\ 24.1 GB and

\\Matrix\LIDAR\26236_DVRPC\ 5.09 TB

Data Quality

Representativeness
Accuracy
Analytical Accuracy
Horizontal Positional Accuracy
Vertical Positional Accuracy

The specifications require that only Nonvegetated Vertical Accuracy (NVA) be computed for raw lidar point cloud swath files. The vertical accuracy was tested with 155 independent survey located in open terrain. These check points were not used in the calibration or post processing of the lidar point cloud data. The survey check points were distributed throughout the project. Specifications for this project require that the NVA be 19.6 cm or better AccuracyZ at 95 percent confidence level. Elevations from the unclassified lidar surface were measured for the x,y location of each check point. Elevations interpolated from the lidar surface were then compared to the elevation values of the surveyed control. The RMSE was computed to be 0.041 meters. AccuracyZ has been tested to meet 19.6 cm NVA at 95 percent confidence level using (RMSEz * 1.9600) as defined by the National Standards for Spatial Data Accuracy (NSSDA); assessed and reported using National Digital Elevation Program (NDEP)/ASPRS Guidelines.
Quantitation Limits
Bias
Comparability
Completeness Measure
Precision
Analytical Precision
Field Precision
Sensitivity
Detection Limit
Completeness Report

These raw LAS data files include all data points collected. No points have been removed or excluded. A visual qualitative assessment was performed to ensure data completeness. No void areas or missing data exist. The raw point cloud is of good quality and data passes Nonvegetated Vertical Accuracy specifications.
Conceptual Consistency

Data cover the entire area specified for this project.
» Quality Control Procedures Employed

Data Management

» Have Resources for Management of these Data Been Identified? Yes
» Approximate Percentage of Budget for these Data Devoted to Data Management Unknown
» Do these Data Comply with the Data Access Directive? Yes
» Is Access to the Data Limited Based on an Approved Waiver?  
» If Distributor (Data Hosting Service) is Needed, Please Indicate  
» Approximate Delay Between Data Collection and Dissemination  
» If Delay is Longer than Latency of Automated Processing, Indicate Under What Authority Data Access is Delayed
» Actual or Planned Long-Term Data Archive Location NCEI-CO
» Approximate Delay Between Data Collection and Archiving  
» How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive?

Data is backed up to tape and to cloud storage.

Lineage

» Lineage Statement

Sources

Citation Title Control Survey Report: Delaware Valley Ortho and Lidar Task Order
Contact Role Type Originator
Contact Type Organization
Contact Name Quantum Spatial
Publish Date 2015-01-01
Extent Type Discrete
Extent Start Date/Time 2015
Extent End Date/Time  
Scale Denominator  
Citation URL  
Citation URL Name  
Citation URL Description
Source Contribution

This data source was used (along with the airborne GPS/IMU Data) to aid in the georeferencing of the lidar point cloud data.
Citation Title Lidar RAW Data for Delaware Valley 2015
Contact Role Type Originator
Contact Type Organization
Contact Name Quantum Spatial
Publish Date 2015-01-01
Extent Type Range
Extent Start Date/Time 2015-04-12
Extent End Date/Time 2015-05-23
Scale Denominator  
Citation URL  
Citation URL Name  
Citation URL Description
Source Contribution

This data source was used to populate the lidar point cloud data.
Citation Title
Contact Role Type
Contact Type
Contact Name
Publish Date
Extent Type
Extent Start Date/Time
Extent End Date/Time
Citation URL
Citation URL Name
Citation URL Description
Scale Denominator
Citation Title
Contact Role Type
Contact Type
Contact Name
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Classified LAS Processing: The bare earth surface is then manually reviewed to ensure correct classification on the Class 2 (Ground) points. After the bare-earth surface is finalized, it is then used to generate all hydro-breaklines through heads-up digitization.

All ground (ASPRS Class 2) LiDAR data inside of the Lake Pond and Double Line Drain hydro flattening breaklines were then classified to water (ASPRS Class 9) using TerraScan macro functionality. A buffer of 1 meter was also used around each hydro-flattened feature to classify these ground (ASPRS Class 2) points to Ignored ground (ASPRS Class 10). All Lake Pond Island and Double Line Drain Island features were checked to ensure that the ground (ASPRS Class 2) points were reclassified to the correct classification after the automated classification was completed. All bridge decks were classified to Class 17.

All overlap data was processed through automated functionality provided by TerraScan to classify the overlapping flight line data to approved classes by USGS. The overlap data was identified using the Overlap Flag, per LAS 1.4 specifications.

All data was manually reviewed and any remaining artifacts removed using functionality provided by TerraScan and TerraModeler. Global Mapper us used as a final check of the bare earth dataset. GeoCue was then used to create the deliverable industry-standard LAS files for both the All Point Cloud Data and the Bare Earth. Quantum Spatial proprietary software was used to perform final statistical analysis of the classes in the LAS files, on a per tile level to verify final classification metrics and full LAS header information.
Process Date/Time 2015-01-01 00:00:00
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The NOAA Office for Coastal Management (OCM) downloaded this data set from this USGS site:

ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/USGS_LPC_DE_DelawareValleyHD_5A_2015_LAS_2017

The total number of laz files downloaded and processed was 167.

The data were in UTM Zone 18 (NAD83 2011), meters coordinates and NAVD88 (Geoid12A) elevations in meters. From the provided report, the data were classified as:

1 - Unclassified

2 - Ground

7 - Low Noise

9 - Water

10 - Ignored Ground

17 - Bridge Decks

18 - High Noise

OCM processed all classifications of points to the Digital Coast Data Access Viewer (DAV). Classes available in the DAV are: 1, 2, 7, 9, 10, 17, 18.

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

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

2. Internal OCM scripts were run on the laz files to convert from orthometric (NAVD88) elevations to ellipsoid elevations using the Geoid12A model, to convert from UTM Zone 18 (NAD83 2011), meters coordinates to geographic coordinates, to assign the geokeys, to sort the data by gps time and zip the data to database and to http.
Process Date/Time 2020-06-24 00:00:00
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Related Items

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Data Set (DS) Cross Reference 2015 DVRPC Lidar: Delaware Valley (PA, NJ)
     
     
     

Catalog Details

Catalog Item ID 60131
Metadata Record Created By Rebecca Mataosky
Metadata Record Created 2020-06-25 11:18+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 Workflow State Published / External
Metadata Last Review Date 2022-03-16
Metadata Review Frequency 1 Year
Metadata Next Review Date 2023-03-16
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