2020 USGS Lidar DEM: Savannah Pee Dee, SC
Data Set (DS) | OCM Partners (OCMP)GUID: gov.noaa.nmfs.inport:65959 | Updated: October 17, 2023 | Published / External
Summary
Short Citation
OCM Partners, 2024: 2020 USGS Lidar DEM: Savannah Pee Dee, SC, https://www.fisheries.noaa.gov/inport/item/65959.
Full Citation Examples
Product: Lidar based digital elevation model (DEM) data tiles for ground classified points.
Geographic Extent: Approximately 21,453 square miles across South Carolina;
Block 1 (Lot 6 QL2) - approximately 3,583 square miles in Anderson, Cherokee, Greenville, Laurens, Newberry, Oconee, Pickens, Spartanburg, and Union counties
Block 2 (Lot 7 QL1) - approximately 950 square miles in Greenville and Lexington counties
Block 3 (Lot 7 QL2) - approximately 3435 square miles in Abbeville, Aiken, Anderson, Edgefield, Greenwood, Laurens, McCormick, Newberry, Oconee, and Saluda counties
Block 4 (Lot 8 QL1) - approximately 135 square miles in Aiken and Edgefield counties
Block 5 (Lot 8 QL2) - approximately 5,775 square miles in Aiken, Allendale, Bamberg, Barnwell, Calhoun, Chester, Chesterfield, Clarendon, Colleton, Edgefield, Fairfield, Hampton, Kershaw, Lancaster, Lee, Lexington, McCormick, Newberry, Orangeburg, Richland, Saluda, and Sumter counties
Block 6 (Lot 9 QL2) - approximately 7,255 square miles in Bamberg, Beaufort, Berkeley, Charleston, Chesterfield, Clarendon, Colleton, Darlington, Dillon, Dorchester, Florence, Georgetown, Hampton, Horry, Jasper, Kershaw, Lee, Marion, Marlboro, Orangeburg, Sumter, and Williamsburg counties
Block 7 (Lot 9 QL1) - approximately 689 square miles in Beaufort, Berkeley, Charleston, Colleton, Darlington, Dorchester, Florence counties
Dataset Description: The SC Savannah Pee Dee 2019 B19 lidar project called for the planning, acquisition, processing, and production of derivative products of QL 1 and QL2 lidar data to be collected at a nominal pulse spacing (NPS) of 0.35 and 0.71 meters. Project specifications were based on the U.S. Geological Survey National Geospatial Program Base Lidar Specification, Version 1.3. The data was developed based on a horizontal datum/projection of NAD83 (2011) State Plane South Carolina (FIPS 3900) International Feet (EPSG 6570), and a vertical datum of NAVD88 (GEOID18) US Survey Feet. Lidar data was delivered as processed LAS 1.4 files formatted to individual 5,000-Int'l. foot x 5,000-Int'l. foot tiles.
Ground Conditions: Lidar was collected January through March 2020 while no snow was on the ground and rivers were at or below normal levels. In order to post process the lidar data to meet task order specifications and meet ASPRS vertical accuracy guidelines, Woolpert established ground control points that were used to calibrate the lidar to known ground locations established throughout the project area. Additional independent accuracy checkpoints were collected and used to assess the vertical accuracy of the data. These checkpoints were not used to calibrate or post process the data.
Distribution Information
-
Create custom data files by choosing data area, product type, map projection, file format, etc. A new metadata will be produced to reflect your request using this record as a base. Change to an orthometric vertical datum is one of the many options.
-
GeoTIFF
Bulk download of data files in Tiff format, SC State Plane (FIPS 3900) NAD83 (2011) International feet with vertical feet. These files are owned and maintained by the USGS. These have not been reviewed by OCM and the link is provided here for convenience.
None
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.
Controlled Theme Keywords
COASTAL ELEVATION, elevation, TERRAIN 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
https://coast.noaa.gov
Metadata Contact
NOAA Office for Coastal Management (NOAA/OCM)
coastal.info@noaa.gov
(843) 740-1202
https://coast.noaa.gov
Extents
-83.363118° W,
-79.070394° E,
35.219515° N,
32.020958° S
2020-01-01 - 2020-02-03
Dates of collection for Block 1 (Lot 6) in Anderson, Cherokee, Greenville, Laurens, Newberry, Oconee, Pickens, Spartanburg, and Union counties and Block 3 (Lot 7, QL2) in Abbeville, Aiken, Anderson, Edgefield, Greenwood, Laurens, McCormick, Newberry, Oconee, and Saluda counties.
2020-01-05 - 2020-03-20
Dates of collection for Block 6 (Lot 9, QL2) in Bamberg, Beaufort, Berkeley, Charleston, Chesterfield, Clarendon, Colleton, Darlington, Dillon, Dorchester, Florence, Georgetown, Hampton, Horry, Jasper, Kershaw, Lee, Marion, Marlboro, Orangeburg, Sumter, and Williamsburg counties.
2020-01-20 - 2020-03-12
Dates of collection for Block 7 (Lot 9, QL1) in Beaufort, Berkeley, Charleston, Colleton, Darlington, Dorchester, Florence counties.
2020-01-20
Dates of collection for Block 4 (Lot 8, QL1) in Aiken and Edgefield counties.
2020-01-05 - 2020-01-22
Dates of collection for Block 2 (Lot 7, QL1) in Greenville and Lexington counties.
2020-01-05 - 2020-01-29
Dates of collection for Block 5 (Lot 8, QL2) in Aiken, Allendale, Bamberg, Barnwell, Calhoun, Chester, Chesterfield, Clarendon, Colleton, Edgefield, Fairfield, Hampton, Kershaw, Lancaster, Lee, Lexington, McCormick, Newberry, Orangeburg, Richland, Saluda, and Sumter counties.
Item Identification
Title: | 2020 USGS Lidar DEM: Savannah Pee Dee, SC |
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Short Name: | 2020 Savannah Pee Dee DEM m9437 |
Status: | Completed |
Creation Date: | 2020 |
Publication Date: | 2020-09-04 |
Abstract: |
Product: Lidar based digital elevation model (DEM) data tiles for ground classified points. Geographic Extent: Approximately 21,453 square miles across South Carolina; Block 1 (Lot 6 QL2) - approximately 3,583 square miles in Anderson, Cherokee, Greenville, Laurens, Newberry, Oconee, Pickens, Spartanburg, and Union counties Block 2 (Lot 7 QL1) - approximately 950 square miles in Greenville and Lexington counties Block 3 (Lot 7 QL2) - approximately 3435 square miles in Abbeville, Aiken, Anderson, Edgefield, Greenwood, Laurens, McCormick, Newberry, Oconee, and Saluda counties Block 4 (Lot 8 QL1) - approximately 135 square miles in Aiken and Edgefield counties Block 5 (Lot 8 QL2) - approximately 5,775 square miles in Aiken, Allendale, Bamberg, Barnwell, Calhoun, Chester, Chesterfield, Clarendon, Colleton, Edgefield, Fairfield, Hampton, Kershaw, Lancaster, Lee, Lexington, McCormick, Newberry, Orangeburg, Richland, Saluda, and Sumter counties Block 6 (Lot 9 QL2) - approximately 7,255 square miles in Bamberg, Beaufort, Berkeley, Charleston, Chesterfield, Clarendon, Colleton, Darlington, Dillon, Dorchester, Florence, Georgetown, Hampton, Horry, Jasper, Kershaw, Lee, Marion, Marlboro, Orangeburg, Sumter, and Williamsburg counties Block 7 (Lot 9 QL1) - approximately 689 square miles in Beaufort, Berkeley, Charleston, Colleton, Darlington, Dorchester, Florence counties Dataset Description: The SC Savannah Pee Dee 2019 B19 lidar project called for the planning, acquisition, processing, and production of derivative products of QL 1 and QL2 lidar data to be collected at a nominal pulse spacing (NPS) of 0.35 and 0.71 meters. Project specifications were based on the U.S. Geological Survey National Geospatial Program Base Lidar Specification, Version 1.3. The data was developed based on a horizontal datum/projection of NAD83 (2011) State Plane South Carolina (FIPS 3900) International Feet (EPSG 6570), and a vertical datum of NAVD88 (GEOID18) US Survey Feet. Lidar data was delivered as processed LAS 1.4 files formatted to individual 5,000-Int'l. foot x 5,000-Int'l. foot tiles. Ground Conditions: Lidar was collected January through March 2020 while no snow was on the ground and rivers were at or below normal levels. In order to post process the lidar data to meet task order specifications and meet ASPRS vertical accuracy guidelines, Woolpert established ground control points that were used to calibrate the lidar to known ground locations established throughout the project area. Additional independent accuracy checkpoints were collected and used to assess the vertical accuracy of the data. These checkpoints were not used to calibrate or post process the data. |
Purpose: |
This project will support the 3DEP mission, the Natural Resources Conservation Service (NRCS) high resolution elevation enterprise program, and the Federal Emergency Management Agency (FEMA) Risk Mapping, Assessment and Planning (MAP) program, as well as many South Carolina state and local agencies. |
Supplemental Information: |
USGS Contract No. G16PC00022, Task Order No. 140G0219F0339. Contractor: Woolpert. Sub-contractors: GRW, Inc., SurvTech Solutions, Florabama Geospatial Solutions, LLC (FGS). The following are the USGS lidar fields in JSON: {
"ldrinfo" : {
"ldrspec" : "USGS NGP Base Specifications v1.3", "ldrsens" : "Leica Terrain Mapper", "ldrmaxnr" : "15", "ldrnps" : "0.71", "ldrdens" : "2", "ldranps" : "0.71", "ldradens" : "2", "ldrfltht" : "2500", "ldrfltsp" : "150", "ldrscana" : "40", "ldrscanr" : "90", "ldrpulsr" : "600", "ldrpulsd" : "5", "ldrpulsw" : "2.5", "ldrwavel" : "1064", "ldrmpia" : "1", "ldrbmdiv" : "0.25", "ldrswatw" : "1820", "ldrswato" : "25", "ldrgeoid" : "GEOID18" }, "ldraccur" : {
"ldrchacc" : "0", "rawnva" : "0", "rawnvan" : "0" }, "lasinfo" : {
"lasver" : "1.4", "lasprf" : "6", "laswheld" : "Geometrically unreliable points were identified using a combination of automated and manual techniques and subsequently classified as high or low noise and given the standard Withheld bit.", "lasolap" : "Swath "overage" points were identified in these files using the standard LAS overlap bit.", "lasintr" : "16", "lasclass" : {
"clascode" : "1", "clasitem" : "Processed but not classified" }, "lasclass" : {
"clascode" : "2", "clasitem" : "Bare earth ground" }, "lasclass" : {
"clascode" : "7", "clasitem" : "Noise" }, "lasclass" : {
"clascode" : "9", "clasitem" : "Water" }, "lasclass" : {
"clascode" : "17", "clasitem" : "Bridge decks" }, "lasclass" : {
"clascode" : "20", "clasitem" : "Ignored ground" } }} |
Keywords
Theme Keywords
Thesaurus | Keyword |
---|---|
Global Change Master Directory (GCMD) Science Keywords |
EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION
|
Global Change Master Directory (GCMD) Science Keywords |
EARTH SCIENCE > OCEANS > COASTAL PROCESSES > COASTAL ELEVATION
|
ISO 19115 Topic Category |
elevation
|
UNCONTROLLED | |
None | DEM |
None | digital elevation model |
None | Elevation Data |
None | laser |
None | lidar |
None | Remote Sensing |
None | Topography |
Spatial Keywords
Thesaurus | Keyword |
---|---|
Global Change Master Directory (GCMD) Location Keywords |
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA
|
Global Change Master Directory (GCMD) Location Keywords |
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > SOUTH CAROLINA
|
Global Change Master Directory (GCMD) Location Keywords |
VERTICAL LOCATION > LAND SURFACE
|
UNCONTROLLED | |
None | Abbeville County |
None | Aiken County |
None | Allendale County |
None | Anderson County |
None | Bamberg County |
None | Barnwell County |
None | Beaufort County |
None | Berkeley County |
None | Calhoun County |
None | Charleston County |
None | Cherokee County |
None | Chester County |
None | Chesterfield County |
None | Clarendon County |
None | Colleton County |
None | Darlington County |
None | Dillon County |
None | Dorchester County |
None | Edgefield County |
None | Fairfield County |
None | Florence County |
None | Georgetown County |
None | Greenville County |
None | Greenwood County |
None | Hampton County |
None | Horry County |
None | Jasper County |
None | Kershaw County |
None | Lancaster County |
None | Laurens County |
None | Lee County |
None | Lexington County |
None | Marion County |
None | Marlboro County |
None | McCormick County |
None | Newberry County |
None | Oconee County |
None | Orangeburg County |
None | Pickens County |
None | Richland County |
None | Saluda County |
None | Spartanburg County |
None | Sumter County |
None | U.S. Coastline |
None | Union County |
None | Williamsburg County |
Platform Keywords
Thesaurus | Keyword |
---|---|
Global Change Master Directory (GCMD) Platform Keywords |
Airplane > Airplane
|
Physical Location
Organization: | Office for Coastal Management |
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City: | Charleston |
State/Province: | SC |
Data Set Information
Data Set Scope Code: | Data Set |
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Data Set Type: | Elevation |
Maintenance Frequency: | None Planned |
Data Presentation Form: | Model (digital) |
Distribution Liability: |
Any conclusions drawn from the analysis of this information are not the responsibility of NOAA, the Office for Coastal Management or its partners. |
Data Set Credit: | Woolpert, USGS |
Support Roles
Data Steward
Date Effective From: | 2021 |
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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: | 2021 |
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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: | 2021 |
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Date Effective To: | |
Contact (Organization): | U.S. Geological Survey |
Address: |
12201 Sunrise Valley Drive Reston, VA 20191 USA |
URL: | USGS Home |
Metadata Contact
Date Effective From: | 2021 |
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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: | 2021 |
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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 |
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Extent Group 1
Extent Group 1 / Geographic Area 1
W° Bound: | -83.363118 | |
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E° Bound: | -79.070394 | |
N° Bound: | 35.219515 | |
S° Bound: | 32.020958 |
Extent Group 1 / Time Frame 1
Time Frame Type: | Range |
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Start: | 2020-01-01 |
End: | 2020-02-03 |
Description: |
Dates of collection for Block 1 (Lot 6) in Anderson, Cherokee, Greenville, Laurens, Newberry, Oconee, Pickens, Spartanburg, and Union counties and Block 3 (Lot 7, QL2) in Abbeville, Aiken, Anderson, Edgefield, Greenwood, Laurens, McCormick, Newberry, Oconee, and Saluda counties. |
Extent Group 1 / Time Frame 2
Time Frame Type: | Range |
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Start: | 2020-01-05 |
End: | 2020-03-20 |
Description: |
Dates of collection for Block 6 (Lot 9, QL2) in Bamberg, Beaufort, Berkeley, Charleston, Chesterfield, Clarendon, Colleton, Darlington, Dillon, Dorchester, Florence, Georgetown, Hampton, Horry, Jasper, Kershaw, Lee, Marion, Marlboro, Orangeburg, Sumter, and Williamsburg counties. |
Extent Group 1 / Time Frame 3
Time Frame Type: | Range |
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Start: | 2020-01-20 |
End: | 2020-03-12 |
Description: |
Dates of collection for Block 7 (Lot 9, QL1) in Beaufort, Berkeley, Charleston, Colleton, Darlington, Dorchester, Florence counties. |
Extent Group 1 / Time Frame 4
Time Frame Type: | Discrete |
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Start: | 2020-01-20 |
Description: |
Dates of collection for Block 4 (Lot 8, QL1) in Aiken and Edgefield counties. |
Extent Group 1 / Time Frame 5
Time Frame Type: | Range |
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Start: | 2020-01-05 |
End: | 2020-01-22 |
Description: |
Dates of collection for Block 2 (Lot 7, QL1) in Greenville and Lexington counties. |
Extent Group 1 / Time Frame 6
Time Frame Type: | Range |
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Start: | 2020-01-05 |
End: | 2020-01-29 |
Description: |
Dates of collection for Block 5 (Lot 8, QL2) in Aiken, Allendale, Bamberg, Barnwell, Calhoun, Chester, Chesterfield, Clarendon, Colleton, Edgefield, Fairfield, Hampton, Kershaw, Lancaster, Lee, Lexington, McCormick, Newberry, Orangeburg, Richland, Saluda, and Sumter counties. |
Spatial Information
Spatial Representation
Representations Used
Grid: | Yes |
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Reference Systems
Reference System 1
Coordinate Reference System |
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Reference System 2
Coordinate Reference System |
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Access Information
Security Class: | Unclassified |
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Data Access Procedure: |
Data is available online for bulk and custom downloads. |
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. |
Distribution Information
Distribution 1
Start Date: | 2021-12-03 |
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End Date: | Present |
Download URL: | https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=9437/details/9437 |
Distributor: | NOAA Office for Coastal Management (NOAA/OCM) (2021 - Present) |
File Name: | Customized Download |
Description: |
Create custom data files by choosing data area, product type, map projection, file format, etc. A new metadata will be produced to reflect your request using this record as a base. Change to an orthometric vertical datum is one of the many options. |
File Type (Deprecated): | Zip |
Compression: | Zip |
Distribution 2
Start Date: | 2021-12-03 |
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End Date: | Present |
Download URL: | https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/OPR/Projects/SC_SavannahPeeDee_2019_B19/ |
Distributor: | U.S. Geological Survey (2021 - Present) |
File Name: | Bulk Download |
Description: |
Bulk download of data files in Tiff format, SC State Plane (FIPS 3900) NAD83 (2011) International feet with vertical feet. These files are owned and maintained by the USGS. These have not been reviewed by OCM and the link is provided here for convenience. |
File Type (Deprecated): | GeoTIFF (.tif) |
Distribution Format: | GeoTIFF |
URLs
URL 1
URL: | https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/metadata/SC_SavannahPeeDee_2019_B19/ |
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Name: | USGS Metadata folder |
URL Type: |
Online Resource
|
File Resource Format: | Folder |
Description: |
Link to folder of reports and metadata. Includes breaklines. |
URL 2
URL: | https://coast.noaa.gov/dataviewer/ |
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Name: | NOAA's Office for Coastal Management (OCM) Data Access Viewer (DAV) |
URL Type: |
Online Resource
|
File Resource Format: | HTML |
Description: |
The Data Access Viewer (DAV) allows a user to search for and download elevation, imagery, and land cover data for the coastal U.S. and its territories. The data, hosted by the NOAA Office for Coastal Management, can be customized and requested for free download through a checkout interface. An email provides a link to the customized data, while the original data set is available through a link within the viewer. |
Technical Environment
Description: |
Microsoft Windows 10 Version 1803 (Build 17134.1304); ArcMap 10.7; ArcCatalog 10.7; TerraScan ver. 20; TerraModeler ver. 20; LP360 v2019.1.30.4. |
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Data Quality
Horizontal Positional Accuracy: |
Blocks 1, 3, 5, 6 The data sets was produced to meet ASPRS Positional Accuracy Standards for Digital Geospatial Data (2014) for a 18.6 cm RMSEx / RMSEy Horizontal Accuracy Class which equates to Positional Horizontal Accuracy = +/- 45.5 cm at a 95% confidence level. Blocks 2, 4, 7 The data sets was produced to meet ASPRS Positional Accuracy Standards for Digital Geospatial Data (2014) for a 14.5 cm RMSEx / RMSEy Horizontal Accuracy Class which equates to Positional Horizontal Accuracy = +/- 35.5 cm at a 95% confidence level. |
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Vertical Positional Accuracy: |
This data set was produced to meet ASPRS Positional Accuracy Standard for Digital Geospatial Data (2014) for a 10-cm RMSEz Vertical Accuracy Class. USGS Determined Vertical Accuracy: NVA = 8.7 cm at 95% confidence level (4.4 cm RMSEz) VVA = 20.18 cm at 95th Percentile Please refer to the USGS Work Package report (link provided in URL section of this metadata record) for more information. |
Completeness Report: |
These LAS data files include all data points collected. No points have been removed or excluded. A visual qualitative assessment was performed to ensure data completeness. No void areas or missing data exist. |
Conceptual Consistency: |
Data covers the entire area specified for this project. |
Data Management
Have Resources for Management of these Data Been Identified?: | Yes |
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Approximate Percentage of Budget for these Data Devoted to Data Management: | Unknown |
Do these Data Comply with the Data Access Directive?: | Yes |
Actual or Planned Long-Term Data Archive Location: | NCEI-CO |
How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive?: |
Data is backed up to tape and to cloud storage. |
Lineage
Lineage Statement: |
The NOAA Office for Coastal Management (OCM) ingested references to the USGS Cloud Optimized GeoTIFF files hosted on Amazon Web Services (AWS) into the Digital Coast Data Access Viewer (DAV). The DAV accesses the DEM as it resides on AWS under the prd-tnm bucket. |
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Sources
USGS GeoTiff files on AWS
Contact Role Type: | Publisher |
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Contact Type: | Organization |
Contact Name: | USGS |
Citation URL: | https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/OPR/Projects/SC_SavannahPeeDee_2019_B19/ |
Citation URL Name: | GeoTiff Data Files |
Citation URL Description: |
Top of the folder of data files |
Process Steps
Process Step 1
Description: |
Lidar Point Cloud Classification: The point cloud underwent a classification process to determine bare-earth points and non-ground points utilizing "first and only" as well as "last of many" lidar returns. This process determined Processed, but Unclassified (Class 1), Bare Earth Ground (Class 2), Low Noise (Class 7), Water (Class 9), Bridge Decks (Class 17), High Noise (Class 18), and Ignored Ground (Class 20). The bare-earth (Class 2 - Ground) lidar points underwent a manual QA/QC step to verify the quality of the DEM as well as a peer-based QC review. This included a review of the DEM surface to remove artifacts and ensure topographic quality. After the bare-earth surface is finalized, it is then used to generate all hydro-breaklines through a semi-automated process. All ground (Class 2) lidar data inside of the Lake Pond and Double Line Drain hydro flattening breaklines were then classified to water (Class 9) using TerraScan/LP360 macro functionality. A buffer of 0.7 meters was also used around each hydro-flattened feature to classify these ground (Class 2) points to Ignored Ground (Class 20). All Lake Pond Island and Double Line Drain Island features were checked to ensure that the ground (Class 2) points were reclassified to the correct classification after the automated classification was completed. All overlap data was processed through automated functionality provided by TerraScan to classify the overlapping flight line data to approved classes by USGS. The overlap data was classified using standard LAS overlap bit. These classes were created through automated processes only and were not verified for classification accuracy. Due to software limitations within TerraScan, these classes were used to trip the withheld bit within various software packages. These processes were reviewed and accepted by USGS through numerous conference calls and pilot study areas. All data was manually reviewed and any remaining artifacts removed using functionality provided by TerraScan and TerraModeler. Global Mapper was used as a final check of the bare earth dataset. GeoCue was then used to create the deliverable industry-standard LAS files. Woolpert proprietary software and LP360 was used to perform final statistical analysis of the classes in the LAS files, on a per tile level to verify final classification metrics and full LAS header information. |
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Process Date/Time: | 2020-09-04 00:00:00 |
Process Step 2
Description: |
Hydro-Flattened Digital Elevation Models (DEMs): Class 2 (ground) lidar points in conjunction with the hydro breaklines as well bridge breaklines were used to create a 2-foot hydro-flattened bare-earth raster DEM. Using automated scripting routines within ArcMap, a GeoTIFF file was created for each tile. Each surface is reviewed using Global Mapper to check for any surface anomalies or incorrect elevations found within the surface. |
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Process Date/Time: | 2020-09-01 00:00:00 |
Process Contact: | U.S. Geological Survey |
Process Step 3
Description: |
The NOAA Office for Coastal Management (OCM) extracted the tiff file URL references and ingested them into the NOAA Digital Coast Data Access Viewer (DAV). No changes were made to the data. The DAV will access the DEM as it resides on Amazon Web Services (AWS) under the pr-tnm container. |
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Process Date/Time: | 2021-12-15 00:00:00 |
Process Contact: | NOAA Office for Coastal Management (NOAA/OCM) |
Phone (Voice): | (843) 740-1202 |
Email Address: | coastal.info@noaa.gov |
Source: | USGS GeoTiff files on AWS |
Related Items
Item Type | Relationship Type | Title |
---|---|---|
Data Set (DS) | Cross Reference |
2020 USGS Lidar: Savannah Pee Dee, SC |
Catalog Details
Catalog Item ID: | 65959 |
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GUID: | gov.noaa.nmfs.inport:65959 |
Metadata Record Created By: | Kirk Waters |
Metadata Record Created: | 2021-12-15 14:45+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 Last Review Date: | 2022-03-16 |
Metadata Review Frequency: | 1 Year |
Metadata Next Review Date: | 2023-03-16 |