2001 NCFMP Lidar: Phase 1A (Neuse, Pasquotank, Tar-Pamlico, White Oak River Basins)
Dataset Identification:
Resource Abstract:
This airborne LiDAR terrain mapping data was acquired January through March 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 Neuse, Pasquotank, Tar-Pamlico,
and White Oak River Basins in central and eastern North Carolina. This area consists of 33 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 1A (Neuse, Pasquotank, Tar-Pamlico, White Oak 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)
other Citation Details
Cinergi keyword enhanced at Mon Nov 14 06:59:44 UTC 2016
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 Neuse, Pasquotank, Tar-Pamlico, and White Oak 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, EarthData
International, 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
Constraints on resource usage:
Security Constraints
Classification
unclassified
Classification
System None
Handling
Description N/A
Spatial representation type code:
vector
Processing environment:
Native Dataset Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.722
Resource extent
Geographic Extent
Geographic Bounding Box
westBoundLongitude
-79.241832
eastBoundLongitude
-75.451653
northBoundLatitude
36.563854
southBoundLatitude
34.464308
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/1397/supplemental/2001_NCFMP_Lidar_Phase1a.kmz
The Lidar Accuracy Assessment Reports for these data are available by county and may be viewed at: http://portal.ncdenr.org/web/lr/geodetic/floodplaininfo
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 EarthData International of North Carolina. Parts of the raw
data acquisition were subcontracted to Horizons Inc. and 3001 Inc.
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
name Of Measure Horizontal Positional Accuracy Report
evaluation Method Description
LIDAR full return mass points were compared with surveyed elevations provided by independent contractors to the NCGS. More
information about the Quality Control reports is available at http://portal.ncdenr.org/web/lr/geodetic/floodplaininfo. Numerous
internal quality assurance/quality control steps taken to ensure the quality of the LIDAR terrain data to meet the bare earth
requirements and RMSE accuracy standards in the NC Floodplain Mapping Program. Step 1. Preprocessing Step 2. Post-Automated
Editing QC (Data Evaluation) Step 3. QC Check of Tiles Step 4. Manual Editing (Hillshade Checks / Peer Review) Step 5. QC
and Tile Edge Matching Step 6. Final EarthData QC Step 7. Comparisons of Independent Field Survey Data with LIDAR Data
AbsoluteExternalPositionalAccuracy
name Of Measure Horizontal Positional Accuracy
measure Description
RMSE (m) of bare earth LIDAR points compared with independent checkpoints.
Quantitative Result
result value 2
value Units
AbsoluteExternalPositionalAccuracy
name Of Measure Vertical Positional Accuracy Report
evaluation Method Description
LIDAR full return mass points were compared with surveyed elevations provided by independent contractors to the NCGS. A vertical
bias was acquired after airport calibration based on this comparison. 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. The RMSE value for each county is available in the Lidar Accuracy Assessment Report.
These reports are available by county and may be viewed at: http://portal.ncdenr.org/web/lr/geodetic/floodplaininfo Numerous
internal quality assurance/quality control steps were taken to ensure the quality of the LIDAR terrain data to meet the bare
earth requirements and RMSE accuracy standards in the NC Floodplain Mapping Program. Step 1. Preprocessing Step 2. Post-Automated
Editing QC (Data Evaluation) Step 3. QC Check of Tiles Step 4. Manual Editing (Hillshade Checks / Peer Review) Step 5. QC
and Tile Edge Matching Step 6. Final EarthData QC Step 7. Comparisons of Independent Field Survey Data with LIDAR Data
AbsoluteExternalPositionalAccuracy
name Of Measure Vertical Positional Accuracy
measure Description
RMSE (m) of bare earth LIDAR points compared with independent checkpoints.
Quantitative Result
result value 0.20
value Units
Completeness Commission
evaluation Method Description
The full return mass points contain voids where insufficient energy was reflected from the surface to generate a valid return
from the terrain. Voids in the full return mass points tend to occur in water bodies. Wet sand and certain types of vegetation
can also cause voids or anomalous elevations.
Completeness Omission
evaluation Method Description
The full return mass points contain voids where insufficient energy was reflected from the surface to generate a valid return
from the terrain. Voids in the full return mass points tend to occur in water bodies. Wet sand and certain types of vegetation
can also cause voids or anomalous elevations.
ConceptualConsistency
measure Description
Data was vertically adjusted based on RMSE and mean difference from control report.
QuantitativeAttributeAccuracy
name Of Measure Quantitative Attribute Accuracy Assessment
measure Description
Less than or equal to 20 cm RMSE of bare earth LIDAR points compared with independent checkpoints.
evaluation Method Description
LIDAR full returns were compared with NCGS QA/QC checkpoints using only single and final returns per pulse. A vertical bias
was acquired after airport calibration based on this comparison. 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 Quality Control reports and a summary of the quality control
checks for each county can be found at http://portal.ncdenr.org/web/lr/geodetic/floodplaininfo.
notes: This metadata was automatically generated from the FGDC Content Standards for Digital Geospatial Metadata standard (version
FGDC-STD-001-1998) using the 2012-06-20T17:21:00 version of the FGDC RSE to ISO 19115-2 transform.
notes: Last Metadata Review Date: 2014-07-03
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