2011 USGS Lidar: Baldwin County, AL
OCM Partners
Data Set
(DS)
| ID: 50118
| Published / External
Created: 2017-11-15
|
Last Modified: 2023-10-17
Project (PRJ) | ID: 49401
ID: 50118
Data Set (DS)
* Discovery• First Pass
» Metadata Rubric
Item Identification
* » Title | 2011 USGS Lidar: Baldwin County, AL |
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Short Name | usgs2011_BaldwinCo_LiDAR_m1425_metadata |
* Status | Completed |
Creation Date | |
Revision Date | |
• Publication Date | 2013-01 |
* » Abstract |
USGS Contract: G10PC00026 Task Order Number: G10PD02126 LiDAR was collected at a 2.0 meter nominal post spacing (2.0m GSD) for approximately 329 square miles of Baldwin County, Alabama, while no snow was on the ground and rivers were at or below normal levels. Project was divided into two separate AOIs, Baldwin West and Baldwin East. Project meets U.S. Geological Survey National Geospatial Program Base LiDAR Specification, Version 13. LAS Classifications: Class 1: Unclassified Class 2: Bare Earth Ground Class 5: High Vegetation Class 7: Noise (Low points) Class 9: Water Class 10: Ignored Ground (within 1m of breakline) Class 12: Overlap Class 13: Witheld |
* Purpose |
Classified LAS files are used to show the manually reviewed bare earth surface. This allows the user to create Intensity Images, Break Lines and Raster DEMs. |
Notes |
10762 |
Other Citation Details | |
• Supplemental Information | |
DOI (Digital Object Identifier) | |
DOI Registration Authority | |
DOI Issue Date |
Keywords
Theme Keywords
Thesaurus | Keyword |
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ISO 19115 Topic Category | elevation |
Temporal Keywords
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* Spatial Keywords
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Stratum Keywords
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Instrument Keywords
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Platform Keywords
Thesaurus | Keyword |
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Physical Location
• » Organization | Office for Coastal Management |
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• » City | Charleston |
• » State/Province | SC |
• Country | |
• » Location Description |
Data Set Information
* Data Set Scope Code | Data Set |
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• Data Set Type | |
• Maintenance Frequency | As Needed |
Maintenance Note | |
» Data Presentation Form | las |
• Entity Attribute Overview |
LiDAR points in LAS 1.2 format |
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 Woolpert, USGS, the Office for Coastal Management or its partners. |
Data Set Credit | Photo Science, Inc. flew the LiDAR and processed the data. |
Support Roles
* » Support Role | Data Steward |
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* » Date Effective From | 2013-01 |
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 |
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* » Date Effective From | 2013-01 |
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 |
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* » Date Effective From | 2013-01 |
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 |
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* » Date Effective From | 2013-01 |
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 | |
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* » Date Effective From | |
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* » Contact | |
* Contact Instructions |
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* Contact Instructions |
Extents
Currentness Reference | Ground Condition |
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Extent Group 1
Extent Description |
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Extent Group 1 / Geographic Area 1
* » W° Bound | -88.04525 |
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* » E° Bound | -87.354075 |
* » N° Bound | 30.865296 |
* » S° Bound | 30.298128 |
* » Description |
Extent Group 1 / Vertical Extent
EPSG Code | |
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Vertical Minimum | |
Vertical Maximum |
Extent Group 1 / Time Frame 1
* » Time Frame Type | Range |
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* » Start | 2011-01-22 |
End | 2011-01-28 |
Alternate Start As Of Info | |
Alternate End As Of Info | |
Description |
Spatial Information
Spatial Resolution
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Vertical Distance | |
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Equivalent Scale Denominator | |
Level of Detail Description |
Spatial Representation
Grid Representation Used? | |
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Vector Representation Used? | Yes |
Text / Table Representation Used? | |
TIN Representation Used? | |
Stereo Model Representation Used? | |
Video Representation Used? |
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Vector Representation
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Surface Object Present? | |
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Reference Systems
Reference System
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Access Information
Data License | |
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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=1425 |
• » 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 | 2014-07-01 |
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End Date | Present |
» Download URL | https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=1425 |
Distributor | NOAA Office for Coastal Management (NOAA/OCM) (2013-01 - Present) |
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) | Zip |
Distribution Format | |
File Size | |
Application Version | |
Compression | Zip |
Review Status |
Start Date | 2014-07-01 |
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End Date | Present |
» Download URL | https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/1425/index.html |
Distributor | NOAA Office for Coastal Management (NOAA/OCM) (2013-01 - Present) |
File Name | Bulk Download |
Description |
Simple download of data files. |
File Date/Time | |
File Type (Deprecated) | LAZ |
Distribution Format | LAS/LAZ - LASer |
File Size | |
Application Version | |
Compression | Zip |
Review Status |
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» Download URL | |
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Description | |
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Description | |
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Review Status |
Archive Information
Location | |
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File Identifier | |
File Name | |
URL | |
Description | |
DOI | |
Archive Date | |
Archive Update Frequency |
Location | |
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Description | |
DOI | |
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URL | |
Description | |
DOI | |
Archive Date | |
Archive Update Frequency |
URLs
URL | https://coast.noaa.gov/dataviewer |
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Name | Data Access Viewer |
URL Type | Online Resource |
File Resource Format | |
Description |
custom download tool |
URL | https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/1425/supplemental/7505-059_Survey_Report_for_East-West_Baldwin_County_Alabama.pdf |
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Name | Survey report |
URL Type | Online Resource |
File Resource Format | |
Description |
Survey report for Baldwin County lidar |
URL | https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/1425/supplemental/usgs2011_BaldwinCo_LiDAR_footprints.kmz |
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Name | Browse Graphic |
URL Type | Browse Graphic |
File Resource Format | kmz |
Description |
This graphic shows the lidar coverage for Baldwin Co, Alabama. |
URL | https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/1425/supplemental/Baldwin_East_QAReport.doc |
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Name | QA report - East |
URL Type | Online Resource |
File Resource Format | |
Description |
QA report for the eastern section of Baldwin County |
URL | https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/1425/supplemental/Baldwin_West_QAReport.doc |
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Name | QA report - West |
URL Type | Online Resource |
File Resource Format | |
Description |
QA report for the western section of Baldwin County |
URL | |
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Description |
Activity Log
Activity Time | 2016-05-23 |
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Activity Type | |
Responsible Party | |
Description |
Date that the source FGDC record was last modified. |
Activity Time | 2017-11-14 |
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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 |
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Activity Type | |
Responsible Party | |
Description |
Partial upload of Positional Accuracy fields only. |
Activity Time | 2018-03-13 |
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Activity Type | |
Responsible Party | |
Description |
Partial upload to move data access links to Distribution Info. |
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Issues
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Issue |
Technical Environment
Description |
MicroStation Version 8; TerraScan Version 10; TerraModeler Version 10; GeoCue Version 7.0.34.5; ESRI ArcGIS 10.0; QT Modeler v 7.1.1; ALS Post Processor 2.71 Build #15; Global Mapper 12.02; Windows XP Operating System |
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Data Quality
Representativeness | |
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Accuracy |
The project area requires LiDAR to be collected on 2.0 meter GSD or better and vertical accuracy of 15.0 centimeters RMSE or better to support 2' contour generation when combined with breaklines. |
Analytical Accuracy | |
Horizontal Positional Accuracy | |
Vertical Positional Accuracy |
Classified LAS files were tested by Photo Science for both vertical and horizontal accuracy. All data is seamless from one tile to the next, no gaps or no data areas. The vertical unit of the data file is in decimal meters with 2-decimal point precision. ; Quantitative Value: 0.03 meters, Test that produced the value: RMSE in meters |
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Completeness Report |
Datasets contain complete coverage of tiles. |
Conceptual Consistency |
Classified LAS files were tested by Photo Science for both vertical and horizontal accuracy. All data is seamless from one tile to the next, no gaps or no data areas. |
» Quality Control Procedures Employed |
Data Management
» Have Resources for Management of these Data Been Identified? | |
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» 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 |
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» 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 |
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» 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? |
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Lineage
» Lineage Statement |
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Sources
Citation Title | LiDAR |
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Contact Role Type | |
Contact Type | |
Contact Name | |
Publish Date | 2010-01-01 |
Extent Type | Range |
Extent Start Date/Time | 2011-01-22 |
Extent End Date/Time | 2011-01-28 |
Scale Denominator | |
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Citation URL Description | |
Source Contribution |
LiDAR points were used to produce the deliverables. | Source Geospatial Form: digital data | Type of Source Media: hard drive |
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Process Steps
Process Step Number | 1 |
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» 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 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. The Baldwin County project (G10PD02126) is immediately adjacent to the NGOM Mobile Bay LiDAR project (G10PD00578). A manual review was performed to ensure that the two datasets tied together as seemlessly as possible. Revisions were made to both the LAS and breakline datasets as needed in order to achieve a smooth transition between the two datasets. NGOM Mobile Bay data was used to produce full tile deliverables on the eastern edge of the Baldwin County West dataset and the western edge of the Baldwin County East dataset. Upon completion of the Baldwin County deliverables, revised copies of the NGOM deliverables that border the Baldwin dataset will be provided in order to ensure that the two datasets agree with each other. All Class 2 LiDAR data inside of the collected breaklines were then classified to Class 9 using TerraScan macro functionality. A buffer of 1 meter was also used around each hydro flattened feature. The breakline files were then 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 then 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. |
Process Date/Time | 2011-01-01 00:00:00 |
Process Contact | |
Phone (Voice) | |
Email Address | |
Source | LiDAR |
Process Step Number | 2 |
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» 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 UTM Zone 16 (NAD83) coordinates and were vertically referenced to NAVD88 using the Geoid09 model. The vertical units of the data were meters. 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 were horizontally converted from UTM coordinates (m) to NAD83 Geographic coordinates (dd). 3. ASPRS Class 11 (Witheld) was changed to Class 13 (Witheld). |
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 | LiDAR |
Process Step Number | 3 |
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» Description |
The withheld points were returned to the original class 11 instead of 13 as changes in the Data Access Viewer system allowed flexibility in class schemas. Georeferencing of files was reset to EPSG 4893 (NAD83(NSRS2007) 3D) |
Process Date/Time | 2019-07-09 00:00:00 |
Process Contact | NOAA Office for Coastal Management (NOAA/OCM) |
Phone (Voice) | (843) 740-1202 |
Email Address | coastal.info@noaa.gov |
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Acquisition Information
Instruments
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Platforms
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FAQs
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Child Items
Rubric scores updated every 15m
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Related Items
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Catalog Details
Catalog Item ID | 50118 |
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Metadata Record Created By | Anne Ball |
Metadata Record Created | 2017-11-15 15:24+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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