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OCM Partners Metadata Library > DEMs - partner (no harvest) >

2012 GA DNR Lidar DEM: Pickens, Rockdale, and Troup Counties

Data Set (DS)  |  OCM Partners (OCMP)
GUID: gov.noaa.nmfs.inport:58129  |  Updated: January 10, 2024  |  Published / External 
Summary
Item Identification
Keywords
Physical Location
Data Set Info
Support Roles
Extents
Spatial Info
Access Info
Distribution Info
URLs
Activity Log
Data Quality
Lineage
Related Items
Catalog Details

Summary

Browse Graphic

Short Citation
OCM Partners, 2024: 2012 GA DNR Lidar DEM: Pickens, Rockdale, and Troup Counties, https://www.fisheries.noaa.gov/inport/item/58129.
Full Citation Examples

Abstract

The PSFY12 GADNR Elevation Data Task Order involves: collecting and delivering topographic elevation point data derived from multiple return light detection and ranging (LiDAR) measurements for portions of 3 counties in Georgia. The Statement of Work (SOW) was developed by the National Oceanic and Atmospheric Administration's (NOAA) Office for Coastal Management (referred to as the Center) in partnership with the Georgia Department of Natural Resources (GADNR) Environmental Protection Division (EPD). The counties included Pickens, Rockdale and Troup. The purpose of the data is for use in coastal management decision making, including applications such as flood plain mapping and water rights management.

LiDAR was collected at 1.0 points per square meter (1.0m GSD) for the portions of Pickens, Rockdale and Troup Counties.

This area was flown during snow free and leaf-off conditions.

NOAA Contract: EA133C11CQ0009

NOAA Task Order Number: T0013

Distribution Information

  • Customized Download

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

  • Bulk Download
    GeoTIFF

    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and some parts of this data may no longer represent actual surface conditions.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
https://coast.noaa.gov

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

Extents

Geographic Area 1

-85.215673° W, -83.90863° E, 34.576794° N, 32.854996° S

Time Frame 1
2012-02-25 - 2012-04-09

Item Identification

Title: 2012 GA DNR Lidar DEM: Pickens, Rockdale, and Troup Counties
Short Name: 2012 Pickens Rockdale Troup m8918
Status: Completed
Publication Date: 2012-04-09
Abstract:

The PSFY12 GADNR Elevation Data Task Order involves: collecting and delivering topographic elevation point data derived from multiple return light detection and ranging (LiDAR) measurements for portions of 3 counties in Georgia. The Statement of Work (SOW) was developed by the National Oceanic and Atmospheric Administration's (NOAA) Office for Coastal Management (referred to as the Center) in partnership with the Georgia Department of Natural Resources (GADNR) Environmental Protection Division (EPD). The counties included Pickens, Rockdale and Troup. The purpose of the data is for use in coastal management decision making, including applications such as flood plain mapping and water rights management.

LiDAR was collected at 1.0 points per square meter (1.0m GSD) for the portions of Pickens, Rockdale and Troup Counties.

This area was flown during snow free and leaf-off conditions.

NOAA Contract: EA133C11CQ0009

NOAA Task Order Number: T0013
Purpose:

Lifts are planned to meet project specifications and are flown under cloud-free conditions in order to collect LIDAR points at an average of 1.0 meter point spacing. This allows the user to create Intensity Images, Break Lines,

Hydro Flattened DEMs and fully Classified LiDAR LAS files.
Notes:

10249

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
Entity Attribute Overview:

LiDAR points in LAS 1.2 format
Entity Attribute Detail Citation:

none
Distribution Liability:

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

of Photo Science, NOAA, GADNR, the Office for Coastal Management or its partners.
Data Set Credit: Photo Science, Inc. acquired and post-processed the LiDAR for Pickens, Rockdale and Troup counties.

Support Roles

Data Steward

CC ID: 885679
Date Effective From: 2012-04-09
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: 885681
Date Effective From: 2012-04-09
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: 885682
Date Effective From: 2012-04-09
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: 885680
Date Effective From: 2012-04-09
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: 1293000
W° Bound: -85.215673
E° Bound: -83.90863
N° Bound: 34.576794
S° Bound: 32.854996

Extent Group 1 / Time Frame 1

CC ID: 1292999
Time Frame Type: Range
Start: 2012-02-25
End: 2012-04-09

Spatial Information

Spatial Resolution

Horizontal Distance: 4.0 Foot

Spatial Representation

Representations Used

Grid: Yes

Access Information

Security Class: Unclassified
Data Access Procedure:

Data is available online. URLs listed in the Data Access section.
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: 885683
Start Date: 2019-11-01
End Date: Present
Download URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=8918
Distributor: NOAA Office for Coastal Management (NOAA/OCM) (2012-04-09 - 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: 885684
Start Date: 2019-11-01
End Date: Present
Download URL: https://noaa-nos-coastal-lidar-pds.s3.us-east-1.amazonaws.com/dem/GA_Pickens_Rockdale_Troup_2012_8918/
Distributor: NOAA Office for Coastal Management (NOAA/OCM) (2012-04-09 - Present)
File Name: Bulk Download
Description:

Simple download of data files.
File Date/Time: 2019-11-01 00:00:00
File Type (Deprecated): GeoTIFF
Distribution Format: GeoTIFF

URLs

URL 1

CC ID: 885685
URL: https://coast.noaa.gov/dataviewer
Name: Data Access Viewer
URL Type:
Online Resource
Description:

Data distribution app.

URL 2

CC ID: 885687
URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12a/1419/supplemental/2012_PS_Georgia_LiDAR_Footprints.kmz
Name: Browse Graphic
URL Type:
Browse Graphic
File Resource Format: kmz
Description:

This graphic shows the lidar coverage for Pickens County, Rockdale County and Troup County in Georgia.

Activity Log

Activity Log 1

CC ID: 885689
Activity Date/Time: 2016-05-23
Description:

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 885688
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: 885690
Activity Date/Time: 2018-02-08
Description:

Partial upload of Positional Accuracy fields only.

Activity Log 4

CC ID: 885691
Activity Date/Time: 2018-03-13
Description:

Partial upload to move data access links to Distribution Info.

Data Quality

Accuracy:

The project area requires LiDAR to be collected on average of 1.0 meter point spacing or better and vertical accuracy of 15.0 centimeters RMSE or better to support 2' contour generation when combined with breaklines.
Horizontal Positional Accuracy:

The LiDAR data was compiled to meet a 1 meter horizontal accuracy. The calibration of the LiDAR sensor itself and the calibration process of the data produced by this sensor ensure that this accuracy is met.
Vertical Positional Accuracy:

The classified LiDAR data was tested by Photo Science, Inc. for vertical accuracy. Photo Science collected a total of 33 ground control points for use in verifying the vertical accuracy of the classified LiDAR data in Pickens, Rockdale and Troup Counties. These points were tested against the classified LiDAR data and a vertical adjustment was made to the classified LiDAR for each county in order to obtain a higher level of accuracy. All data are seamless from one tile to the next, no gaps or no data areas. The vertical unit of the data file is in survey feet with 2-decimal point precision.

Quantitative Value: 0.0381 meters, Test that produced the value: RMSE in meters of classified LiDAR
Completeness Report:

Datasets contain complete coverage of tiles.
Conceptual Consistency:

Deliverables were tested by Photo Science, Inc. vertical accuracy. All data are seamless from one tile to the next, no gaps or no data areas.

Lineage

Lineage Statement:

Data were collected and processed by PhotoScience. They are being distributed by NOAA.

Sources

DEMs derived from lidar

CC ID: 1292994
Contact Role Type: Originator
Contact Type: Organization
Contact Name: PhotoScience

lidar data

CC ID: 1292995
Contact Role Type: Originator
Contact Type: Organization
Contact Name: PhotoScience

Process Steps

Process Step 1

CC ID: 1292996
Description:

Applanix software was used in the post processing of the airborne GPS and inertial data that is critical to the positioning and orientation of the sensor during all flights. POSPac MMS provides the smoothed best estimate of trajectory (SBET) that is necessary for Optech's post processor to develop the point cloud from the LiDAR missions. The point cloud is the mathematical three dimensional collection of all returns from all laser pulses as determined from the aerial mission. At this point this data is ready for analysis, classification, and filtering to generate a bare earth surface model in which the above ground features are removed from the data set. The point cloud was manipulated within the Optech or Leica software; GeoCue, TerraScan, and TerraModeler software was used for the automated data classification, manual cleanup, and bare earth generation from this data. Project specific macros were used to classify the ground and to remove the side overlap between parallel flight lines.

All data was manually reviewed and any remaining artifacts removed using functionality provided by TerraScan and TerraModeler.

Class 2 LIDAR was used to create a bare earth surface model. The surface model was then used to heads-up digitize 2D breaklines of inland streams and rivers. Inland Ponds and Lakes of 2 acres or greater were also collected.

Elevation values were assigned to all Inland Ponds and Lakes using TerraModeler functionality.

Elevation values were assigned to all Inland Streams and Rivers using Photo Science proprietary software.

All Class 2 LIDAR data falling inside of the collected breaklines were then classified to Class 9 and Class 2 LIDAR data falling within a proximity of three feet will be classified to Class 10 using TerraScan macro functionality.

The breakline files were translated to ESRI Shapefile format using ESRI conversion tools.

Data was then run through additional macros to ensure deliverable classification levels matching LAS ASPRS Classification structure. GeoCue functionality was used to ensure correct LAS Version. In house software was used as a final QA/QC check to provide LAS Analysis of the delivered tiles.

Tiles were run through automated scripting within ArcMap and were combined with the Hydro Flattened Breaklines to create the 4' DEM. Final DEM tiles were clipped to the tile boundary in order to provide a seamless dataset.

A manual QA review of the tiles was completed in ArcMap and Global Mapper to ensure full coverage with no gaps or slivers within the project area.
Process Date/Time: 2012-01-01 00:00:00
Source: lidar data

Process Step 2

CC ID: 1292997
Description:

The NOAA Office for Coastal Management (OCM) received topographic DEM files in ESRI ArcGrid format. The data were converted to GeoTIFF format for ingest into the Digital Coast Data Access Viewer and to comply with the open data policy. Data are in Georgia State Plane West 1002 (NAD83) coordinates

and are vertically referenced to NAVD88 using the Geoid09 model. The vertical units of the data are US survey feet.
Process Date/Time: 2012-12-01 00:00:00
Process Contact: NOAA Office for Coastal Management (NOAA/OCM)
Phone (Voice): (843) 740-1202
Email Address: coastal.info@noaa.gov
Source: DEMs derived from lidar

Related Items

Item Type Relationship Type Title
Data Set (DS) Cross Reference 2012 Georgia Department of Natural Resources (GADNR) Topographic LiDAR: Pickens, Rockdale and Troup Counties

Point cloud source for these DEMs

Catalog Details

Catalog Item ID: 58129
GUID: gov.noaa.nmfs.inport:58129
Metadata Record Created By: Kirk Waters
Metadata Record Created: 2019-11-01 11:42+0000
Metadata Record Last Modified By: Kirk Waters
Metadata Record Last Modified: 2024-01-10 19:09+0000
Metadata Record Published: 2024-01-10
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