2009 Chatham County Georgia Lidar

Dataset Identification:

Resource Abstract:
LiDAR generated point cloud acquired in spring 2009 for Chatham County, Georgia for the Metropolitan Planning Commission. The data are classified as follows: Class 1 = Unclassified. This class includes vegetation, buildings, noise etc. Class 2 = Ground Class 9 = Water This data is for planning purposes only and should not be used for legal or cadastral purposes.
Citation
Title 2009 Chatham County Georgia Lidar
publication  Date   2012-01-01
presentationForm  imageDigital
cited responsible party - originator
organisation Name  DOC/NOAA/NOS/OCM > Office for Coastal Management, National Ocean Service, National Oceanic and Atmospheric Administration, U.S. Department of Commerce
Contact information
Telephone
Voice 843-740-1200
Address
2234 South Hobson Ave., Charleston, SC, 29405-2413
electronic Mail Address coastal.info@noaa.gov
Linkage for online resource
URL: http://coast.noaa.gov
cited responsible party - originator
organisation Name  Chatham County, Georgia
cited responsible party - publisher
organisation Name  DOC/NOAA/NOS/OCM > Office for Coastal Management, National Ocean Service, National Oceanic and Atmospheric Administration, U.S. Department of Commerce
Contact information
Telephone
Voice 843-740-1200
Address
2234 South Hobson Ave., Charleston, SC, 29405-2413
electronic Mail Address coastal.info@noaa.gov
Linkage for online resource
URL: http://coast.noaa.gov
Topic Category:  elevation
Keywords:
Theme keywords (theme):
Bathymetry/Topography
DTM
Elevation
Lidar
thesaurus name >
Title None
Location keywords:
United States
Georgia
Chatham County
thesaurus name >
Title None
Theme keywords (theme):
Vegetation
thesaurus name >
Title Material > Biological Material
publication  Date   2017-08-24
other Citation Details  Cinergi keyword enhanced.File generated at Thu Aug 24 09:57:30 UTC 2017
Theme keywords (theme):
U.S. Department of Commerce
thesaurus name >
Title Virtual International Authority File (VIAF) Corporate Names
publication  Date   2017-08-24
other Citation Details  Cinergi keyword enhanced.File generated at Thu Aug 24 09:57:30 UTC 2017
Theme keywords (theme):
Water
thesaurus name >
Title Material > Environmental Material
publication  Date   2017-08-24
other Citation Details  Cinergi keyword enhanced.File generated at Thu Aug 24 09:57:30 UTC 2017
Theme keywords (theme):
Elevation
thesaurus name >
Title Feature > Physiographic Feature
publication  Date   2017-08-24
other Citation Details  Cinergi keyword enhanced.File generated at Thu Aug 24 09:57:30 UTC 2017
purpose:
LiDAR points used in conjunction with LiDAR derived breaklines to determine a DTM surface.
Browse image (thumbnail):
thumbnail file name:  ...
file type: kmz
thumbnail file description:  This kmz file shows the extent of coverage for the 2009 Chatham County, GA lidar data set.
Resource language:  eng; USA
Resource progress code:  completed
Resource Maintenance Information
maintenance or update frequency:  unknown
Constraints on resource usage:
Constraints
Use limitation statement:
These data depict the elevations at the time of the survey and are only accurate for that time. 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. Any conclusions drawn from analysis of this information are not the responsibility of NOAA or any of its partners. These data are NOT to be used for navigational purposes.
Constraints on resource usage:
Legal Constraints
Use Limitation
While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.
Spatial representation type code:  vector
Resource extent
Geographic Extent
Geographic Bounding Box
westBoundLongitude  -81.395700
eastBoundLongitude  -80.831008
northBoundLatitude  32.250903
southBoundLatitude  31.713978
Temporal Extent
2009-02-21
2009-02-23
2009-02-24
2009-03-03
2009-03-04
2009-03-20
2009-03-21
2009-03-22
2009-03-23
2009-06-27
Additional information on resource:
Support of FEMA's Floodplain Map Modernization Program and Florida Division of Emergency Management Disaster standards. Collection parameters are as follows: Flight Altitude - 1100m (agl) Repetition Rate - 93300 kHz; Scan Frequency - 44.5kz Airspeed - 100-120 knots Field of View - 30 degrees Avg. Point Spacing 0.57m Flightline Spacing - 294m
point of contact - pointOfContact
individual Name Noel Perkins
organisation Name  SAGIS
position Name Director
Contact information
Telephone
Voice 912-651-1476
Fax 912-651-1480
Address
110 East State Street, Savannah, GA, 31412-8246 Country US
electronic Mail Address perkinsn@thempc.org
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Vector spatial representation information

Geometric Objects
geometric Object Type  point
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reference system 1

Reference System Identifier
Identifier string: urn:ogc:def:crs:EPSG::4269
authority
Title North American Datum 1983
alternateTitle  NAD83
revision  Date   2007-01-19
cited responsible party - resourceProvider
organisation Name  
Contact information
Linkage for online resource
name NAD83
URL: http://www.epsg-registry.org/export.htm?gml=urn:ogc:def:crs:EPSG::4269
link function information
Description Link to Geographic Markup Language (GML) description of reference system.
cited responsible party - publisher
organisation Name  European Petroleum Survey Group
Contact information
Linkage for online resource
name European Petroleum Survey Group Geodetic Parameter Registry
URL: http://www.epsg-registry.org/
link function search
Description Registry that accesses the EPSG Geodetic Parameter Dataset, which is a structured dataset of Coordinate Reference Systems and Coordinate Transformations.
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reference system 2

Reference System Identifier
Identifier string: Ellipsoid in Meters
Identifier code space:  Local Vertical Reference
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Scope of quality information
scope level  dataset
Resource lineage description
AbsoluteExternalPositionalAccuracy
name Of Measure Horizontal Positional Accuracy Report
evaluation Method Description  Lidar acquired and processed to meet 1 m (RMSE) horizontal accuracy.
AbsoluteExternalPositionalAccuracy
name Of Measure Horizontal Positional Accuracy
measure Description  Horizontal point accuracy is a function of angular origination of the pulse; IMU orientation; the scanner encoder and ranging function and will vary depending on the proposed point density selected for the collection. Statistically, the error is roughly 1/3 of the illuminated foot print on the ground and is a function of the beam divergences.
Quantitative Result
result value 0.5
value Units
AbsoluteExternalPositionalAccuracy
name Of Measure Vertical Positional Accuracy Report
evaluation Method Description  The vertical accuracy is based on the Sanborn independent collection of 20 ground survey points distributed throughout the project. The fundamental vertical accuracy at 95 percent confidence level in open terrain tested 0.07 meters (0.25 ft). 1. Vertical accuracy: Less than 0.30 feet RMSEz = less than 0.60 feet vertical accuracy at 95% confidence level, tested in flat, non-vegetated terrain only, employing NSSDA procedures in Reference B. 2. Validation that the data also satisfies FEMA requirements. 3. Vertical units (orthometric heights) are in US Survey Feet, NAVD88.
AbsoluteExternalPositionalAccuracy
name Of Measure Vertical Positional Accuracy
measure Description  Based on the vertical accuracy testing conducted by Sanborn using NSSDA and FEMA methodology, vertical accuracy at the 95% confidence level (called Accuracyz) is computed by the formula RMSEz x 1.9600. The dataset for Chatham County, Georgia satisfies the criteria: Countywide lidar dataset tested 0.15 m (0.49 ft) vertical accuracy at 95% confidence level in open terrain, based on open terrain RMSEz (0.25 ft) x 1.9600. Countywide lidar dataset tested 0.24 m (0.78 ft) vertical accuracy at 95% confidence level in all land cover categories combined, based on consolidated RMSEz (0.40 ft) x 1.9600.
Quantitative Result
result value 0.07
value Units
Completeness Commission
evaluation Method Description  A visual qualitative assessment was performed in the source Lidar dataset.
ConceptualConsistency
measure Description  Data covers the tile scheme provided for the county.

Resource distribution information

Distributor
distributor contact - distributor
organisation Name  DOC/NOAA/NOS/OCM > Office for Coastal Management, National Ocean Service, National Oceanic and Atmospheric Administration, U.S. Department of Commerce
Contact information
Telephone
Voice 843-740-1200
Address
2234 South Hobson Ave., Charleston, SC, 29405-2413
electronic Mail Address coastal.info@noaa.gov
Linkage for online resource
URL: http://coast.noaa.gov
Standard ordering process
Ordering Instructions  The National Geophysical Data Center serves as the archive for this LIDAR data. NGDC should only be contacted for this data if it cannot be obtained from NOAA Coastal Services Center.
Distributor
distributor contact - distributor
individual Name Mike Sutherland
organisation Name  DOC/NOAA/NESDIS/NCEI > National Centers of Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Contact information
Telephone
Voice 303-497-6120
Fax 303-497-6513
Address
325 Broadway E/GC1, Boulder, CO, 80305-3328 Country USA
electronic Mail Address mike.sutherland@noaa.gov
hoursOfService 7:30am-5:00pm Mountain
Standard ordering process
Ordering Instructions  The National Geophysical Data Center serves as the archive for this LIDAR dataset. NGDC should only be contacted for the data if it cannot be obtained from NOAA Coastal Services Center.
Format
Format name LAZ
Format version 

Metadata data stamp:  2013-06-04
Resource Maintenance Information
date of next update:  2014-06-04
maintenance or update frequency:  annually
notes: This metadata was automatically generated from the FGDC Content Standards for Digital Geospatial Metadata standard (version FGDC-STD-001-1998) using the 2013-01-04 version of the FGDC RSE to ISO 19115-2 for LiDAR transform.
notes: Translated from FGDC 2013-06-04T13:00:10.267-06:00
notes: Last Metadata Review Date: 2012-02-13
Metadata contact - author
individual Name Mike Sutherland
organisation Name  DOC/NOAA/NESDIS/NCEI > National Centers of Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Contact information
Telephone
Voice 303-497-6120
Fax 303-497-6513
Address
325 Broadway E/GC1, Boulder, CO, 80305-3328 Country USA
electronic Mail Address mike.sutherland@noaa.gov
hoursOfService 7:30am-5:00pm Mountain
Metadata scope code  dataset
Metadata language  eng; USA
Metadata character set encoding:   utf8
Metadata standard for this record:  ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
standard version:  ISO 19115-2:2009(E)
Metadata record identifier:  gov.noaa.csc.maps:2009_Chatham_Lidar_m1121

Metadata record format is ISO19139-2 XML (MI_Metadata)