2007 South Carolina DNR Lidar: Dorchester County

OCM Partners
Data Set (DS) | ID: 49960 | Published / External
Created: 2017-11-15   |   Last Modified: 2022-08-15

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

ID: 49960
Data Set (DS)

* Discovery
• First Pass
» Metadata Rubric

Item Identification

* » Title 2007 South Carolina DNR Lidar: Dorchester County
Short Name sc2007_scdnr_dorchester_m5106_metadata
* Status Completed
Creation Date  
Revision Date  
• Publication Date 2016-10-17
* » Abstract

Woolpert Inc. conducted a LiDAR survey to acquire LiDAR capable of producing a DEM for orthophoto rectification and able to support 2-foot contour specifications. The LiDAR data was acquired across the project area of Dorchester County, SC. The lidar data acquisition was executed in 5 sessions, from March 5 to March 7, 2007, using a Leica ALS50(83) Lidar System. The airborne GPS (ABGPS) base stations supporting the LiDAR acquisition consisted of the bases set up by the flight crews at KDYB Airport. Dual Frequency data was logged continuously for the duration of each LiDAR flight mission at a one-second sampling rate or better. The flight plan for LiDAR consisted of parallel flights in a north-south extent across the site. Ninety-seven (97) flight lines of LiDAR data were acquired. No problems were encountered during the LiDAR data acquisition phase of the project which would adversely affect the final accuracy, nor schedule of the final deliverables.
* Purpose

High density LiDAR data acquisition within the project limits at a sufficient altitude and density to support digital terrain model (DTM) development for 2-foot contours with a vertical accuracy of 1.2-feet at the 95 percent confidence level.
Notes

10604
Other Citation Details
• 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/geoid18/5106/supplemental/sc2007_scdnr_dorchester_m5106.kmz
DOI (Digital Object Identifier)  
DOI Registration Authority  
DOI Issue Date  

Keywords

Theme Keywords

Thesaurus Keyword
ISO 19115 Topic Category elevation
   
   
   

Temporal Keywords

Thesaurus Keyword
None 2007
   
   
   

* Spatial Keywords

Thesaurus Keyword
   
   
   

Stratum Keywords

Thesaurus Keyword
   
   
   

Instrument Keywords

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Platform Keywords

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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  
• Maintenance Frequency As Needed
Maintenance Note
» Data Presentation Form las
• Entity Attribute Overview

LAS 1.2 format (classes 1,2,5)
Entity Attribute Detail Citation

none
Entity Attribute Detail URL  
Distribution Liability

Any conclusions drawn from the analysis of this information are not the responsibility of Towill Inc., Sanborn, SC DNR, NOAA, the Office for Coastal Management or its partners.
Data Set Credit  

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 2016-10-17
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 2016-10-17
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 2016-10-17
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 2016-10-17
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 -80.792967
* » E° Bound -80.075435
* » N° Bound 33.335336
* » S° Bound 32.815921
* » Description

Extent Group 1 / Vertical Extent

EPSG Code
Vertical Minimum
Vertical Maximum

Extent Group 1 / Time Frame 1

* » Time Frame Type Range
* » Start 2007-03-05
End 2007-03-07
Alternate Start As Of Info  
Alternate End As Of Info  
Description

Spatial Information

Spatial Resolution

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

Spatial Representation

Grid Representation Used?  
Vector Representation Used? Yes
Text / Table Representation Used?  
TIN Representation Used?  
Stereo Model Representation Used?  
Video Representation Used?  

Grid Representation

Dimension Count
Cell Geometry
Transformation Parameter Available?  

Axis Dimension
Dimension Type
Size
Resolution
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Resolution Type
Description

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Size
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Description

Vector Representation

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

Reference Systems

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

This data can be obtained on-line at the following URL:

https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=5106

The data set is dynamically generated based on user-specified parameters.;
• » 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.
Metadata Access Constraints
Metadata Use Constraints

Distribution Information

Start Date  
» Download URL https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=5106
Distributor
File Name Customized Download
Description

Create custom data files by choosing data area, product type, map projection, file format, datum, etc.
File Date/Time  
File Type (Deprecated)  
Distribution Format  
File Size  
Application Version  
Compression  
Review Status  
Start Date  
» Download URL https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/5106/index.html
Distributor
File Name Bulk Download
Description

Simple download of data files.
File Date/Time  
File Type (Deprecated)  
Distribution Format  
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
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  
URL Type Online Resource
File Resource Format  
Description
URL https://coast.noaa.gov
Name  
URL Type Online Resource
File Resource Format  
Description
URL https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/5106/supplemental/sc2007_scdnr_dorchester_m5106.kmz
Name Browse Graphic
URL Type Browse Graphic
File Resource Format kmz
Description

This graphic shows the lidar coverage for the 2007 lidar project covering Dorchester County, South Carolina.
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 2016-12-27
Activity Type  
Responsible Party  
Description

Date that the source FGDC record was last modified.
Activity Time 2017-11-14
Activity Type  
Responsible Party  
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 Time 2018-02-08
Activity Type  
Responsible Party  
Description

Partial upload of Positional Accuracy fields only.
Activity Time 2018-03-13
Activity Type  
Responsible Party  
Description

Partial upload to move data access links to Distribution Info.
Activity Time
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Description
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Description
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Responsible Party
Description

Issues

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

Technical Environment

Description  
 

Data Quality

Representativeness
Accuracy
Analytical Accuracy
Horizontal Positional Accuracy

Lidar source compiled to meet 1 m horizontal RMSE.; Quantitative Value: 1.0 meters, Test that produced the value: The 3D breaklines inherit the accuracy of the Lidar stereo pairs it was acquired from. Lidar source compiled to meet 1m horizontal accuracy.
Vertical Positional Accuracy

Technical specifications were to be 18.5 cm RMSE to support 2 ft contours.; Quantitative Value: 0.185 meters, Test that produced the value: Technical specifications were for 18.5 cm RMSE.
Quantitation Limits
Bias
Comparability
Completeness Measure
Precision
Analytical Precision
Field Precision
Sensitivity
Detection Limit
Completeness Report

A visual qualitative assessment was performed to ensure the data completeness against the intensity images derived from Lidar points.
Conceptual Consistency

Data covers the tile scheme provided for the county and was verified for correct topology.
» Quality Control Procedures Employed

Data Management

» Have Resources for Management of these Data Been Identified?  
» Approximate Percentage of Budget for these Data Devoted to Data Management  
» Do these Data Comply with the Data Access Directive?  
» 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  
» If World Data Center or Other, Specify  
» If To Be Determined, Unable to Archive, or No Archiving Intended, Explain  
 
» 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?  
 

Lineage

» Lineage Statement

Sources

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Contact Name
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Scale Denominator

Process Steps

Process Step Number 1
» Description

The ABGPS, IMU, and raw Leica ALS-50 LiDAR data are integrated into the LEICA ALS post processor software. The resultant file is in a LAS binary file format. The LAS file version 1.1 formats can be easily transferred from one file format to another. It is a binary file format that maintains information specific to the LiDAR data (return#, intensity value, xyz, etc.). The resultant points are produced in the geodetic coordinates referenced to the NAD83 horizontal datum and GRS80 vertical datum. The date and time for each flight line can be determined using the Julian date and time. The Julian date is a continuous count of days and fractions since noon Universal Time on January 1, 4713 BCE on the Julian calendar.
Process Date/Time 2009-01-01 00:00:00
Process Contact  
Phone (Voice)  
Email Address  
Source  
Process Step Number 2
» Description

The unedited data are classified to facilitate the application of the appropriate feature extraction filters. A combination of proprietary filters is applied as appropriate for the production of bare earth digital terrain models (dtms). Interactive editing methods are applied to those areas where it is inappropriate or impossible to use the feature extraction filters, based upon the design criteria and/or limitations of the relevant filters. These same feature extraction filters are used to produce elevation height surfaces. The LiDAR mass points were delivered in American Society for Photogrammetry and Remote Sensing LAS 1.1 format.
Process Date/Time 2009-01-01 00:00:00
Process Contact  
Phone (Voice)  
Email Address  
Source  
Process Step Number 3
» Description

Conversion from Geodetic coordinates NAD83 into State Plane coordinates (International Feet) NAD83 and conversion from ellipsoid heights (meters) into orthometric heights (U.S. Survey Feet).
Process Date/Time 2009-01-01 00:00:00
Process Contact  
Phone (Voice)  
Email Address  
Source  
Process Step Number 4
» Description

Sanborn used GeoCue software to develop LiDAR stereo models. The raster resolution was 1.0 m.
Process Date/Time 2009-01-01 00:00:00
Process Contact  
Phone (Voice)  
Email Address  
Source  
Process Step Number 5
» Description

LiDAR intensity stereo pairs were viewed in 3-D stereo using softcopy photogrammetric software; the breaklines were stereo-compiled in accordance with the Data Dictionary. The LiDARgrammetry was performed under the direct supervision of an ASPRS Certified Photogrammetrist. The breaklines conform to data format requirements outlined by the S.C. Dept. of Natural Resources project specifications.
Process Date/Time 2009-01-01 00:00:00
Process Contact  
Phone (Voice)  
Email Address  
Source  
Process Step Number 6
» Description

Vector 3D breaklines were loaded in an ESRI file geodatabase; topology rules were validated to ensure that breaklines do not intersect or overlap.
Process Date/Time 2009-01-01 00:00:00
Process Contact  
Phone (Voice)  
Email Address  
Source  
Process Step Number 7
» Description

Terrain population procedure: (1) Use ArcGIS "LAS to Multipoint" tool to output class 2 (2 and 8 for South Carolina) points to shapefile (2) Load multipoint shapefile features to geodatabase class (3) Make new terrain, use all appropriate feature classes to enforce the terrain a.HYDROGRAPHIC b.ROADBREAKLINE c.SOFTFEATURES d.ISLAND e.WATERBODY (4)Build terrain
Process Date/Time 2009-01-01 00:00:00
Process Contact  
Phone (Voice)  
Email Address  
Source  
Process Step Number 8
» Description

The NOAA Office for Coastal Management (OCM) received the files in LAZ format from the South Carolina Department of Natural Resources (SCDNR) via a HDD. The files contained lidar elevation and intensity measurements. The data were in State Plane Zone 3900, NAVD88 (orthometric) heights in meters. OCM performed the following processing for data storage and Digital Coast provisioning purposes:

1. The data were converted from State Plane coordinates to geographic coordinates.

2. The data were converted from NAVD88 (orthometric) heights in meters to GRS80 (ellipsoid) heights in meters using Geoid 09.

3. Erroneous elevations were removed.
Process Date/Time 2016-10-17 00:00:00
Process Contact  
Phone (Voice)  
Email Address  
Source  
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» Description
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Source

Acquisition Information

Instruments

Instrument Unavailable Reason  
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FAQs

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Answer

Child Items

Rubric scores updated every 15m

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Related Items

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Catalog Details

Catalog Item ID 49960
Metadata Record Created By Anne Ball
Metadata Record Created 2017-11-15 15:23+0000
Metadata Record Last Modified By Rebecca Mataosky
» Metadata Record Last Modified 2022-08-15 20:20+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
Tags