2001 NCFMP Lidar: Phase 1A (Neuse, Pasquotank, Tar-Pamlico, White Oak River Basins)
Data Set (DS) | OCM Partners (OCMP)GUID: gov.noaa.nmfs.inport:49830 | Updated: August 9, 2022 | Published / External
Summary
Short Citation
OCM Partners, 2024: 2001 NCFMP Lidar: Phase 1A (Neuse, Pasquotank, Tar-Pamlico, White Oak River Basins), https://www.fisheries.noaa.gov/inport/item/49830.
Full Citation Examples
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.
Original contact information:
Contact Org: NC Floodplain Mapping Program
Phone: 919-715-0408
Email: hmorgan@ncem.org
Distribution Information
-
Create custom data files by choosing data area, product type, map projection, file format, datum, etc.
-
Simple download of data files.
None
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be aware that temporal changes may have occurred since this data set was collected and that some parts of this data may no longer
represent actual surface conditions.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.
Controlled Theme Keywords
elevation
Child Items
No Child Items for this record.
Contact Information
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
Extents
-79.241832° W,
-75.451653° E,
36.563854° N,
34.464308° S
2001-01-03 - 2001-03-23
Item Identification
Title: | 2001 NCFMP Lidar: Phase 1A (Neuse, Pasquotank, Tar-Pamlico, White Oak River Basins) |
---|---|
Short Name: | nc2001_phase1a_m1397_metadata |
Status: | Completed |
Publication Date: | 2012-12 |
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. Original contact information: Contact Org: NC Floodplain Mapping Program Phone: 919-715-0408 Email: hmorgan@ncem.org |
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. |
Notes: |
10474 |
Supplemental Information: |
A footprint of this data set may be viewed in Google Earth at: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/1397/supplemental/nc2001_ncfmp_phase1b_m1397.kmz The Lidar Accuracy Assessment Reports for these data are available by county and may be viewed at: http://portal.ncdenr.org |
Keywords
Theme Keywords
Thesaurus | Keyword |
---|---|
ISO 19115 Topic Category |
elevation
|
UNCONTROLLED | |
Keywords | Contour |
Keywords | Elevation |
Keywords | ESRI |
Keywords | Flood |
Keywords | Floodplain |
Keywords | Full return |
Keywords | Hydraulic Modeling |
Keywords | LIDAR |
Keywords | Raw |
Keywords | Shapefile |
Spatial Keywords
Thesaurus | Keyword |
---|---|
UNCONTROLLED | |
Geographic Names Information System | Beaufort County |
Geographic Names Information System | Camden County |
Geographic Names Information System | Carteret County |
Geographic Names Information System | Chowan County |
Geographic Names Information System | Coastal |
Geographic Names Information System | Craven County |
Geographic Names Information System | Currituck County |
Geographic Names Information System | Dare County |
Geographic Names Information System | Durham County |
Geographic Names Information System | Edgecombe County |
Geographic Names Information System | Franklin County |
Geographic Names Information System | Gates County |
Geographic Names Information System | Granville County |
Geographic Names Information System | Greene County |
Geographic Names Information System | Halifax County |
Geographic Names Information System | Hyde County |
Geographic Names Information System | Johnston County |
Geographic Names Information System | Jones County |
Geographic Names Information System | Lenoir County |
Geographic Names Information System | Martin County |
Geographic Names Information System | Nash County |
Geographic Names Information System | NC |
Geographic Names Information System | Neuse River Basin |
Geographic Names Information System | North Carolina |
Geographic Names Information System | Onslow County |
Geographic Names Information System | Orange County |
Geographic Names Information System | Pamlico County |
Geographic Names Information System | Pasquotank County |
Geographic Names Information System | Pasquotank River Basin |
Geographic Names Information System | Perquimans County |
Geographic Names Information System | Person County |
Geographic Names Information System | Pitt County |
Geographic Names Information System | Tar-Pamlico River Basin |
Geographic Names Information System | Tyrrell County |
Geographic Names Information System | Vance County |
Geographic Names Information System | Wake County |
Geographic Names Information System | Warren County |
Geographic Names Information System | Washington County |
Geographic Names Information System | Wayne County |
Geographic Names Information System | White Oak River Basin |
Geographic Names Information System | Wilson County |
Physical Location
Organization: | Office for Coastal Management |
---|---|
City: | Charleston |
State/Province: | SC |
Data Set Information
Data Set Scope Code: | Data Set |
---|---|
Maintenance Frequency: | Unknown |
Entity Attribute Overview: |
Files in LAZ format (classified as 1, unclassified) |
Entity Attribute Detail Citation: |
none |
Distribution Liability: |
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. |
Data Set Credit: | 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. |
Support Roles
Data Steward
Date Effective From: | 2012-12 |
---|---|
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
Date Effective From: | 2012-12 |
---|---|
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
Date Effective From: | 2012-12 |
---|---|
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
Date Effective From: | 2012-12 |
---|---|
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 |
Extents
Currentness Reference: | Ground Condition |
---|
Extent Group 1
Extent Group 1 / Geographic Area 1
W° Bound: | -79.241832 | |
---|---|---|
E° Bound: | -75.451653 | |
N° Bound: | 36.563854 | |
S° Bound: | 34.464308 |
Extent Group 1 / Time Frame 1
Time Frame Type: | Range |
---|---|
Start: | 2001-01-03 |
End: | 2001-03-23 |
Spatial Information
Spatial Representation
Representations Used
Vector: | Yes |
---|
Access Information
Security Class: | Unclassified |
---|---|
Security Classification System: |
None |
Security Handling Description: |
N/A |
Data Access Procedure: |
This data can be obtained on-line at the following URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=1397 ; |
Data Access Constraints: |
None |
Data 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. |
Distribution Information
Distribution 1
Download URL: | https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=1397 |
---|---|
Distributor: | |
File Name: | Customized Download |
Description: |
Create custom data files by choosing data area, product type, map projection, file format, datum, etc. |
Distribution 2
Download URL: | https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/1397/index.html |
---|---|
Distributor: | |
File Name: | Bulk Download |
Description: |
Simple download of data files. |
URLs
URL 1
URL: | https://coast.noaa.gov/dataviewer |
---|---|
URL Type: |
Online Resource
|
URL 2
URL: | https://coast.noaa.gov |
---|---|
URL Type: |
Online Resource
|
URL 3
URL: | https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/1397/supplemental/nc2001_ncfmp_phase1b_m1397.kmz |
---|---|
Name: | Browse Graphic |
URL Type: |
Browse Graphic
|
File Resource Format: | kmz |
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. |
Activity Log
Activity Log 1
Activity Date/Time: | 2016-10-25 |
---|---|
Description: |
Date that the source FGDC record was last modified. |
Activity Log 2
Activity Date/Time: | 2017-11-14 |
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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
Activity Date/Time: | 2018-02-08 |
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Description: |
Partial upload of Positional Accuracy fields only. |
Activity Log 4
Activity Date/Time: | 2018-03-13 |
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Description: |
Partial upload to move data access links to Distribution Info. |
Technical Environment
Description: |
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.722 |
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Data Quality
Accuracy: |
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. | Quantitative Value: 20 | Quantitative Test Explanation: Less than or equal to 20 cm RMSE of bare earth LIDAR points compared with independent checkpoints. |
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Horizontal Positional Accuracy: |
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 ; Quantitative Value: 2 meters, Test that produced the value: RMSE (m) of bare earth LIDAR points compared with independent checkpoints. |
Vertical Positional Accuracy: |
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 ; Quantitative Value: 0.20 meters, Test that produced the value: RMSE (m) of bare earth LIDAR points compared with independent checkpoints. |
Completeness Report: |
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. |
Conceptual Consistency: |
Data was vertically adjusted based on RMSE and mean difference from control report. |
Lineage
Process Steps
Process Step 1
Description: |
All data collection flights were initialized and finalized during periods of GPS Position Dilution of Precision greater than 4. GPS data quality was evaluated post-flight to ensure sufficient quality for LIDAR data requirements and integration. GPS base maximum allowable distance between stations was established such that no more than a 50 mile radius occurred between occupations. Swath width of terrain covered in a single flightline for inland areas at an altitude of 12,000 feet AMT was approximately 3,411 meters, coastal areas at an altitude of 8,000 feet AMT was approximately 2,274 meters. Field of View for the Leica GeoSystems Aeroscan system used was 50 degrees project wide, or 25 degrees from nadir with a maximum of 5 returns collected for each pulse. Ground distance between flightlines for inland areas at 12,000 feet AMT was approximately 2,388 meters, for coastal areas at 8,000 feet AMT was approximately 1,592 meters. Nominal post spacing for finalized Bare Earth product was 3 meters. An average of 10-20 rapid static GPS survey collected ground control points were established per base airport project wide to detect and correct horizontal and vertical bias. Typically, 3 or more flightlines of LIDAR returns were collected for each airport lift, one of which being bi-directional for use in optimizing instrument boresight angles to account for aircraft pitch, yaw and roll. All post process collection quality assurance is achieved aided by airport cross and bi-directional flightlines, entire lift cross flightlines, and the use of surveyed ground control points. |
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Process Date/Time: | 2001-02-01 00:00:00 |
Process Step 2
Description: |
Checking for coverage and anomalies, Airport calibration, Production flightline calibration, and Removal of blunders |
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Process Date/Time: | 2001-02-01 00:00:00 |
Process Step 3
Description: |
Tiling Automated filtering for point classification, Manual editing to classify points, Quality control, Removal of all points not classified as bare earth |
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Process Step 4
Description: |
The methods used to develop these data for the North Carolina Floodplain Mapping Program are documented in LIDAR Bare Earth Mass Points and Breaklines Technical Document, available online at www.ncfloodmaps.com. |
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Process Step 5
Description: |
The lidar point data were received by the NOAA Office for Coastal Management from the USGS Center for Lidar Coordination and Knowledge (CLICK) in las format. The files contained lidar elevation and intensity measurements. The data were unclassified, in State Plane coordinates, and were vertically referenced to NAVD88. OCM performed the following processing for data storage and Digital Coast provisioning purposes: 1. The data were converted from State Plane coordinates to geographic coordinates. 2. The data were converted from orthometric (NAVD88) heights to ellipsoidal heights using Geoid99. 3. The data were sorted by time and laszipped. |
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Process Date/Time: | 2012-12-01 00:00:00 |
Catalog Details
Catalog Item ID: | 49830 |
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GUID: | gov.noaa.nmfs.inport:49830 |
Metadata Record Created By: | Anne Ball |
Metadata Record Created: | 2017-11-15 15:22+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 |