Slide Menu
Search Help Show/Hide Menu
Short Citation:
OCM Partners, 2022: 2006 South Carolina DNR Lidar: Aiken County, https://www.fisheries.noaa.gov/inport/item/49958.

Item Identification

Title: 2006 South Carolina DNR Lidar: Aiken County
Short Name: sc2006_DNR_aiken_m4822_metadata
Status: Completed
Publication Date: 2015-03-10
Abstract:

The LiDAR data acquisition was executed in five sessions, on March 15, 16 & 17, 2006, using a Leica ALS50 LiDAR System. Specific details about the ALS50 system are included in Section 4 of this report.

The three airborne GPS (ABGPS) base stations supporting the LiDAR acquisition were located on 1) a NGS SAC monumented control point inside Bush Field Airport (AGS), point AA2799, 2) a point inside the county "RS_0001" and 3) a another point nearby "RS_0002". Dual Frequency data was logged continuously for the duration of each LiDAR flight mission at a one-second sampling rate. A table of control points for the LiDAR survey is included in Section 5 of this report.

The flight plan for LiDAR consisted of parallel flights in a north-east/south-west extent across the site (see Figure B, LiDAR Flight Layout). Sixty-three (63) flight lines of LiDAR data were acquired in 5 sessions along with 1 cross flight across the County.

Purpose:

Flood plain mapping

Notes:

10602

Supplemental Information:

A report for this project is available at:

https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/4822/supplemental/sc2006_DNR_aiken_m4822_surveyreport.pdf

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

https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/4822/supplemental/sc2006_DNR_aiken_m4822.kmz

Keywords

Theme Keywords

Thesaurus Keyword
ISO 19115 Topic Category
elevation
UNCONTROLLED
None Bare Earth
None Intensity
None Surface
None Terrain

Temporal Keywords

Thesaurus Keyword
UNCONTROLLED
None 2006
None March

Physical Location

Organization: Office for Coastal Management
City: Charleston
State/Province: SC

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: None Planned
Data Presentation Form: las
Entity Attribute Overview:

LAS 1.2 format (classes 1,2,9,10,12)

Entity Attribute Detail Citation:

none

Distribution Liability:

Any conclusions drawn from the analysis of this information are not the responsibility of South Carolina DNR, Woolpert, NOAA, the Office for Coastal Management or its partners.

Support Roles

Data Steward

CC ID: 684879
Date Effective From: 2015-03-10
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: 684881
Date Effective From: 2015-03-10
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: 684882
Date Effective From: 2015-03-10
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: 684880
Date Effective From: 2015-03-10
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: 1136695
W° Bound: -82.02736778246
E° Bound: -82.01657545315
N° Bound: 33.47824781015
S° Bound: 33.45789825258

Extent Group 1 / Time Frame 1

CC ID: 1136694
Time Frame Type: Range
Start: 2006-03-15
End: 2006-03-17

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=4822

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.

Distribution Information

Distribution 1

CC ID: 742304
Download URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=4822
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: 742305
Download URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/4822/index.html
Distributor:
File Name: Bulk Download
Description:

Simple download of data files.

URLs

URL 1

CC ID: 742307
URL: https://coast.noaa.gov/dataviewer
URL Type:
Online Resource

URL 2

CC ID: 742308
URL: https://coast.noaa.gov
URL Type:
Online Resource

URL 3

CC ID: 742309
URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/4822/supplemental/sc2006_DNR_aiken_m4822.kmz
Name: Browse Graphic
URL Type:
Browse Graphic
File Resource Format: kmz
Description:

This graphic shows the lidar coverage for the 2006 DNR lidar project covering Aiken County, SC.

Activity Log

Activity Log 1

CC ID: 684900
Activity Date/Time: 2016-05-23
Description:

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 684899
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: 718559
Activity Date/Time: 2018-02-08
Description:

Partial upload of Positional Accuracy fields only.

Activity Log 4

CC ID: 742306
Activity Date/Time: 2018-03-13
Description:

Partial upload to move data access links to Distribution Info.

Data Quality

Accuracy:

High density LiDAR data acquisition within the project limits (see Figure A, Project Boundary/LiDAR Coverage) at a sufficient altitude and density to support digital terrain model (DTM) development capable of generating 2-foot contours with a vertical accuracy of 1.2-feet RMSE at the 90% confidence level.

Horizontal Positional Accuracy:

The complete LiDAR data set for the entire project area was delivered to URS on July 19, 2006. URS conducted a data assessment and provided comments and examples to Woolpert for delivery on August 4, 2006.URS indicated the LiDAR data met the vertical and horizontal accuracy requirements for each of the land use categories.; Quantitative Value: 3.353 meters, Test that produced the value: 3.353 meters at 90% confidence interval

Vertical Positional Accuracy:

Woolpert Inc. conducted a topographic LiDAR survey to support the South Carolina FEMA Map Modernization Program and the generation of 2-foot contours with a vertical accuracy of 1.2-feet at the 90% confidence level. The LiDAR data was acquired across the project limits only.; Quantitative Value: 0.366 meters, Test that produced the value: 36.6 cm at 90% confidence interval

Completeness Measure:

Cloud Cover: 0

Completeness Report:

Complete

Conceptual Consistency:

None

Lineage

Process Steps

Process Step 1

CC ID: 1136690
Description:

The LiDAR data acquisition was executed in five sessions, on March 15, 16 & 17, 2006, using a Leica ALS50 LiDAR System. Specific details about the ALS50 system are included in Section 4 of this report.

The three airborne GPS (ABGPS) base stations supporting the LiDAR acquisition were located on 1) a NGS SAC monumented control point inside Bush Field Airport (AGS), point AA2799, 2) a point inside the county "RS_0001" and 3) a another point nearby "RS_0002". Dual Frequency data was logged continuously for the duration of each LiDAR flight mission at a one-second sampling rate.

The LiDAR data was acquired using 2 ALS50's onboard 2 Cessna T404's. The ALS50 LiDAR system, developed by Leica Geosystems of Boston, Massachusetts, includes the simultaneous first, intermediate and last pulse data capture module, the extended altitude range module, and the target signal intensity capture module. The system software is operated on a P-400 Diagnostic System Laptop Computer aboard the aircraft.

Woolpert performed ABGPS surveying during the LiDAR mission to derive the flight trajectory at a half-second interval. ABGPS is a critical factor in LiDAR data collection. As such, we spent considerable time developing flight windows around the satellite constellation. We also developed multiple base stations to provide redundancy and to reduce ionospheric and atmospheric errors due to distance separation between the aircraft and the base stations.

At a minimum, two base stations were in operation for every LiDAR acquisition session, operating at a half-second sampling rate. Final adjusted control point values were used to process the LiDAR data. The survey report includes extensive data about the procedures and results for the ground control survey.

As a continuing quality control measure, data was downloaded each evening in the field to verify a strong GPS solution and then refined in-house to determine final trajectories.

A base-station control survey was performed to provide uniformity and to ensure consistency between the ground control and Airborne GPS. All ground control surveys were performed to achieve accuracies consistent with a second-order, class I horizontal (meets or exceeds 1:50,000) and third-order vertical survey as outlined in Geometric Geodetic Accuracy Standards and Specifications for Using GPS Relative Positioning Techniques, Version 5.0, of August 1, 1989, published by the Federal Geodetic Control Committee (FGCC).

For additional information please view the survey report:https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/4822/supplemental/sc2006_DNR_aiken_m4822surveyreport.pdf

Process Date/Time: 2006-03-01 00:00:00

Process Step 2

CC ID: 1136691
Description:

URS provided Woolpert 843 polygons indicating areas to be corrected. In response, Woolpert provided an ESRI shapefile that identifies 3 categories: CORRECTED, EDIT-UNNEEDED and SWAMP_TREE_AREA. Of the 843 edit areas provided by URS, Woolpert corrected 683 and left 160 unchanged based on review and/or inclusion of breaklines.

Woolpert resubmitted the LiDAR data to URS on Sept 14, 2006. On October 4, 2006 Woolpert received comments from URS that additional editing was still required. Woolpert agreed to review all the bridge locations within the detailed study area and make the appropriate corrections. Woolpert than resubmitted the LiDAR data on November 4, 2006 and it was accepted on November 29, 2006.

Process Date/Time: 2006-11-29 00:00:00

Process Step 3

CC ID: 1136692
Description:

The NOAA Office for Coastal Management (OCM) received the files in laz format from SCDNR via an FTP online repository. The files contained lidar elevation and intensity measurements. The data were in State Plane, 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. The LAS data were sorted by latitude and the headers were updated.

Process Date/Time: 2015-02-21 00:00:00

Catalog Details

Catalog Item ID: 49958
GUID: gov.noaa.nmfs.inport:49958
Metadata Record Created By: Anne Ball
Metadata Record Created: 2017-11-15 15:23+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