Name: 2012 Georgia Department of Natural Resources (GADNR) Topographic LiDAR: Pickens, Rockdale and Troup Counties
Published: 2012-04-09

Short Citation
OCM Partners, 2024: 2012 Georgia Department of Natural Resources (GADNR) Topographic LiDAR: Pickens, Rockdale and Troup Counties, https://www.fisheries.noaa.gov/inport/item/49605.
Full Citation Examples

Abstract

NOAA Contract: EA133C11CQ0009

NOAA Task Order Number: T0013

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.

Customized Download

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

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and some parts of this data may no longer represent actual surface conditions.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.

elevation

No Child Items for this record.

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

Geographic Area 1

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

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

Title:	2012 Georgia Department of Natural Resources (GADNR) Topographic LiDAR: Pickens, Rockdale and Troup Counties
Short Name:	2012_GADNR_LiDAR_PickensRockdaleTroupCounties_m1419_metadata
Status:	Completed
Publication Date:	2012-04-09
Abstract:	NOAA Contract: EA133C11CQ0009 NOAA Task Order Number: T0013 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.
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

Theme Keywords

Thesaurus

Keyword

ISO 19115 Topic Category

elevation

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

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.

Data Steward

CC ID: 669573

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: 669575

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: 669576

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: 669574

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

Currentness Reference:	Ground Condition

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 1133316

W° Bound:	-85.215673
E° Bound:	-83.90863
N° Bound:	34.576794
S° Bound:	32.854996

Extent Group 1 / Time Frame 1

CC ID: 1133315

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

Spatial Representation

Representations Used

Vector:	Yes

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=1419 ;
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 1

CC ID: 740290

Download URL:	https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=1419
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: 740291

Download URL:	https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/1419/index.html
Distributor:
File Name:	Bulk Download
Description:	Simple download of data files.

URL 1

CC ID: 740293

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

URL 2

CC ID: 740294

URL:	https://coast.noaa.gov
URL Type:	Online Resource

URL 3

CC ID: 740295

URL:	https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/1419/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 1

CC ID: 669593

Activity Date/Time:	2016-05-23
Description:	Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 669592

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: 718045

Activity Date/Time:	2018-02-08
Description:	Partial upload of Positional Accuracy fields only.

Activity Log 4

CC ID: 740292

Activity Date/Time:	2018-03-13
Description:	Partial upload to move data access links to Distribution Info.

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. ; Quantitative Value: 1.0 meters, Test that produced the value: Value stated in meters
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.

Process Steps

Process Step 1

CC ID: 1133312

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

Process Step 2

CC ID: 1133313

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 Georgia State Plane West 1002 (NAD83) coordinates

and were vertically referenced to NAVD88 using the Geoid09 model. The vertical units of the data were

feet. 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 Geoid09.

2. The topographic las files' vertical units were converted from survey feet to meters.

3. The topographic las files were converted from a Projected Coordinate System (GA SPW 1002) to a Geographic Coordinate system (GCS).

4. The topographic las files' horizontal units were converted from survey feet to decimal degrees.

Process Date/Time:

2012-12-01 00:00:00

Item Type

Relationship Type

Title

Data Set (DS)

Cross Reference

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

DEMs derived from this point cloud.

Catalog Item ID:	49605
GUID:	gov.noaa.nmfs.inport:49605
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:	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

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