2001 NCFMP Lidar: Phase 1B (Cape Fear and Lumber River Basins)

Dataset Identification:

Resource Abstract:
This airborne LiDAR terrain mapping data was acquired in the spring of 2001. The data were collected for the floodplain mapping program for the state of North Carolina. The data were collected for the state in three phases: 1, 2, and 3. This metadata record describes that data that were in phase 1 of collection and fall within the Cape Fear and Lumber River Basins in central and eastern North Carolina. This area consists of 30 counties which are listed below in the Place Keywords field. The data were received by the NOAA Office for Coastal Management from the U.S. Geological Survey (USGS) Center for Lidar Coordination and Knowledge (CLICK). For data storage and Digital Coast provisioning purposes, the OCM converted the data to geographic coordinates and ellipsoid (Geoid99) elevations. The data are unclassified.
Citation
Title 2001 NCFMP Lidar: Phase 1B (Cape Fear and Lumber River Basins)
publication  Date   2012-12-01
cited responsible party - publisher
organisation Name  NOAA's Ocean Service, Office for Coastal Management (OCM)
Contact information
Address
, Charleston, SC
cited responsible party - originator
organisation Name  Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office for Coastal Management (OCM)
cited responsible party - originator
organisation Name  NC Floodplain Mapping Program (NCFMP), NC Department of Crime Control and Public Safety (NCDPS) Division of Emergency Management, NC Department of Environment and Natural Resources (NCDENR)
cited responsible party -
organisation Name  
Contact information
Linkage for online resource
URL: http://coast.noaa.gov/dataviewer/index.html?action=advsearch&qType=in&qFld=ID&qVal=1399
cited responsible party -
organisation Name  
Contact information
Linkage for online resource
URL: ftp://coast.noaa.gov/pub/DigitalCoast/lidar1_z/geoid12a/data/1399
cited responsible party -
organisation Name  
Contact information
Linkage for online resource
URL: http://coast.noaa.gov/dataviewer
cited responsible party -
organisation Name  
Contact information
Linkage for online resource
URL: http://coast.noaa.gov
Topic Category:  elevation
Keywords:
Theme keywords (theme):
Bathymetry/Topography
LIDAR
Lidar
Elevation
Full return
Raw
Contour
Shapefile
ESRI
Elevation
Flood
Floodplain
Hydraulic Modeling
thesaurus name >
Title None
Location keywords:
United States
North Carolina
NC
Coastal
Cape Fear River Basin
Lumber River Basin
Alamance County
Brunswick County
Bladen County
Caswell County
Chatham County
Columbus County
Cumberland County
Duplin County
Durham County
Forsyth County
Guilford County
Harnett County
Hoke County
Johnston County
Lee County
Lenoir County
Montgomery County
Moore County
New Hanover County
Onslow County
Orange County
Pender County
Randolph County
Robeson County
Rockingham County
Richmond County
Sampson County
Scotland County
Wake County
Wayne County
thesaurus name >
Title None
purpose:
These data were collected and derived by the North Carolina Floodplain Mapping Program (www.ncfloodmaps.com) as part of its effort to modernize FEMA Flood Insurance Rate Maps (FIRM) statewide. Although created for specific use in the engineering aspects of floodplain delineation, the data were also developed to address the elevation data requirements of the broader geospatial data user community. The North Carolina Floodplain Mapping Program was established in response to the extensive damage caused by Hurricane Floyd in 1999.
Browse image (thumbnail):
thumbnail file name:  ...
file type: kmz
thumbnail file description:  This graphic shows the lidar coverage for the Cape Fear and Lumber River Basins in Phase 1 of the North Carolina statewide lidar collection.
Resource language:  eng; USA
Resource progress code:  completed
Resource Maintenance Information
maintenance or update frequency:  unknown
Constraints on resource usage:
Constraints
Use limitation statement:
Any conclusions drawn from the analysis of this information are not the responsibility of NC Floodplain Mapping Program, Greenhorne & O'Mara, Inc., the NOAA Office for Coastal Management, or its partners.
Constraints on resource usage:
Legal Constraints
use constraint:  otherRestrictions
Other constraints
Use Constraints: Users should be aware that temporal changes may have occurred since this data set was collected and that 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.
Constraints on resource usage:
Legal Constraints
Access Constraints  otherRestrictions
Other constraints
Access Constraints: None
Spatial representation type code:  vector
Resource extent
Geographic Extent
Geographic Bounding Box
westBoundLongitude  -80.062511
eastBoundLongitude  -77.437490
northBoundLatitude  36.375656
southBoundLatitude  33.818820
Temporal Extent
2001-01-03 2001-03-23
Additional information on resource:
A footprint of this data set may be viewed in Google Earth at: ftp://coast.noaa.gov/pub/DigitalCoast/lidar1_z/geoid12a/data/1399/supplemental/nc2001_ncfmp_phase1b_m1399.kmz The Lidar Accuracy Assessment Reports for these data are available by county and may be viewed at: http://http://portal.ncdenr.org/
Credits:
Acknowledgement of the North Carolina Floodplain Mapping Program is appreciated when using the data set. This data set was developed for the North Carolina Floodplain Mapping Program by Greenhorne & O'Mara, Inc. Additional data development support was provided by 3Di Technologies, Inc. as subcontractor to Greenhorne & O'Mara and by Airborne1 Corp. and Sanborn Colorado, LLC as sub-tier suppliers to 3Di.
point of contact - pointOfContact
organisation Name  NC Floodplain Mapping Program
Contact information
Telephone
Voice 919-715-0408
Address
4105 Reedy Creek Rd., Raleigh, NC, 27607 Country USA
electronic Mail Address hmorgan@ncem.org
Back to top:

Content information: feature catalog description

Included With Dataset 
Back to top

Scope of quality information
scope level  dataset
Resource lineage description
AbsoluteExternalPositionalAccuracy
name Of Measure Horizontal Positional Accuracy Report
evaluation Method Description  See Cape Fear and Lumber River Basin Final Reports.
AbsoluteExternalPositionalAccuracy
name Of Measure Horizontal Positional Accuracy
measure Description  Horizontal Accuracy is derived from the total error budget of the LIDAR Sensor and the Post Processed GPS Kinematic solution. Error budgets and calibration values have been established that include GPS error of the aircraft location in space during flight, the angular error of the Inertial Measurement Unit resulting in error budget for aircraft platform attitude in pitch, roll and yaw, and the angular error in the LIDAR scan mirror position for each laser shot. These and other minor error budgets are used to derive the maximum horizontal position error of the LIDAR footprint on the terrain surface. Performance against this budget is checked with laboratory measurements and flight calibrations to assure conformance to specification. Further information on calibration reports can be obtained in these reports, available at: http://portal.ncdenr.org/web/lr/geodetic/floodplaininfo.
Quantitative Result
result value 1.0
value Units
AbsoluteExternalPositionalAccuracy
name Of Measure Vertical Positional Accuracy Report
evaluation Method Description  See Cape Fear and Lumber River Basin Final Reports.
AbsoluteExternalPositionalAccuracy
name Of Measure Vertical Positional Accuracy
measure Description  Internally collected QAQC points and qualified NGS Benchmarks were compared to interpolated TIN values for the LIDAR data sets. The difference was calculated as the QAQC value minus the LIDAR interpolated TIN value. The differences were then squared and summed. The resulting value was divided by the number of points compared to determine the mean. The square root of the mean was calculated to arrive at the Root Mean Square Error (RMSE) of the elevation differences, or RMSE(z). Acceptable values for RMSE would be 20cm or less for designated coastal counties and 25cm for inland counties. The county reports which have the county RMSE value are available at: http://portal.ncdenr.org/web/lr/geodetic/floodplaininfo.
Quantitative Result
result value 0.2
value Units
Completeness Commission
evaluation Method Description  Not provided
ConceptualConsistency
measure Description  Proprietary algorithms exclude any points taken with Positional Dilution of Precision Values greater than 3; algorithms also exclude anomalous points (extremely high or extremely low values compared to the surrounding points).
QuantitativeAttributeAccuracy
name Of Measure Quantitative Attribute Accuracy Assessment
measure Description  State QAQC points measured by the NCGS were compared to interpolated TIN values for the LIDAR data sets. The difference was calculated as the QAQC value minus the LIDAR interpolated TIN value. The differences were then squared and summed. The resulting value was divided by the number of points compared to determine the mean. The square root of the mean was calculated to arrive at the Root Mean Square Error (RMSE) of the elevation differences, or RMSE(z). Additional information on accuracy is contained in the county reports, which may be viewed at: http://portal.ncdenr.org/web/lr/geodetic/floodplaininfo.
evaluation Method Description  LIDAR Bare Earth data were compared with NCGS QA/QC checkpoints. The 5% of points with the largest error were removed (outliers). For the NC Floodplain Mapping Program, the vertical accuracy for coastal counties is less than or equal to 20 cm RMSE. For mainland counties, the vertical accuracy of the elevation data is less than or equal to 25 cm RMSE. More information about the
Quantitative Result
result value Total accuracy (all land cover types): Information on accuracy is contained in the Cape Fear and Lumber River Basin Final Reports. Accuracy by land cover type: Information on accuracy is contained in the county reports, which may be viewed at: http://portal.ncdenr.org/web/lr/geodetic/floodplaininfo.
value Units

Resource distribution information

Distributor
distributor contact - distributor
organisation Name  NOAA Office for Coastal Management
Contact information
Telephone
Voice 843-740-1202
Address
2234 South Hobson Avenue, Charleston, SC, 29405-2413
electronic Mail Address coastal.info@noaa.gov

Metadata data stamp:  2015-09-14
Resource Maintenance Information
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 2015-07-24 version of the FGDC RSE to ISO 19115-2 transform.
notes: Translated from FGDC 2015-09-17T11:48:44.77-04:00
notes: Last Metadata Review Date: 2015-09-14
Metadata contact - pointOfContact
organisation Name  NOAA Office for Coastal Management
Contact information
Telephone
Voice 843-740-1202
Address
2234 South Hobson Avenue, Charleston, SC, 29405-2413
electronic Mail Address coastal.info@noaa.gov
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:  8443e11b-fce8-455f-9159-c64221d3e244

Metadata record format is ISO19139-2 XML (MI_Metadata)