Search Help Show/Hide Menu
Completion Rubric
83%
29 / 35
View Report
OCM Partners Metadata Library > DEMs - partner (no harvest) >

2025 USGS Lidar DEM: Georgia 9 County

Data Set (DS)  |  OCM Partners (OCMP)
GUID: gov.noaa.nmfs.inport:79479  |  Updated: March 26, 2026  |  Published / External 
Summary
Item Identification
Keywords
Physical Location
Data Set Info
Support Roles
Extents
Spatial Info
Access Info
Distribution Info
URLs
Data Quality
Lineage
Catalog Details

Summary

Short Citation
OCM Partners, 2026: 2025 USGS Lidar DEM: Georgia 9 County, https://www.fisheries.noaa.gov/inport/item/79479.
Full Citation Examples

Abstract

A half-meter (0.5m) cell size Digital Elevation Model (DEM) raster was created from the ground classified lidar points. The files are delivered in tile format (1000 x 1000m), the rasters are delivered in 32-bit floating point GeoTIFF format (.tif) and adhere to USGS-NGP Lidar Base Specification 2025, rev. A.

This metadata record supports the data entry in the NOAA Digital Coast Data Access Viewer (DAV). For this data set, the DAV is leveraging the GeoTIFF files hosted by USGS on Amazon Web Services.

Purpose

This project will be providing a fall 2024 / winter 2024-25 leaf-off lidar survey to be collected over an Area of Interest (AOI) of approximately 2,648 square miles in western Georgia. This project will support the USGS 3DEP mission.

The Block1 area is approximately 2648 square miles and contains 7287 tiles (1000m by 1000m).

Data Access & Downloads

  • Customized Download
    Format: Not Applicable

    Create custom data files by choosing data area, map projection, file format, etc. A new metadata will be produced to reflect your request using this record as a base.

  • Bulk Download
    GeoTIFF

    Bulk download of data files in the original coordinate system.

Access Constraints:

None

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be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions.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.

Controlled Theme Keywords

DIGITAL ELEVATION/TERRAIN MODEL (DEM), elevation, TERRAIN ELEVATION

URLs

  • NOAA's Office for Coastal Management (OCM) Data Access Viewer (DAV)

    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.

  • USGS Project Report

    Link to the USGS Project Report that provides information about the project, vertical accuracy results, and the point classes and sensors used.

  • USGS Additional Info

    Link to the reports, breaklines, metadata, and spatial metadata.

  • Lidar Report

    Link to the Merrick-Surdex lidar report.

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

Geographic Area 1

-85.14329073777° W, -84.00197102541° E, 33.20888895281° N, 31.48587095238° S

Time Frame 1
2025-02-01 - 2025-03-18

Item Identification

Title: 2025 USGS Lidar DEM: Georgia 9 County
Short Name: ga2025_9cnty_dem_m14045
Status: Completed
Creation Date: 2025
Publication Date: 2026
Abstract:

A half-meter (0.5m) cell size Digital Elevation Model (DEM) raster was created from the ground classified lidar points. The files are delivered in tile format (1000 x 1000m), the rasters are delivered in 32-bit floating point GeoTIFF format (.tif) and adhere to USGS-NGP Lidar Base Specification 2025, rev. A.

This metadata record supports the data entry in the NOAA Digital Coast Data Access Viewer (DAV). For this data set, the DAV is leveraging the GeoTIFF files hosted by USGS on Amazon Web Services.
Purpose:

This project will be providing a fall 2024 / winter 2024-25 leaf-off lidar survey to be collected over an Area of Interest (AOI) of approximately 2,648 square miles in western Georgia. This project will support the USGS 3DEP mission.

The Block1 area is approximately 2648 square miles and contains 7287 tiles (1000m by 1000m).
Supplemental Information:

Raster File Type = TIFF

Bit Depth/Pixel Type = 32-bit float

Raster Cell Size = 0.5m

Interpolation or Resampling Technique = Triangulated Irregular Network (TIN)

Required Vertical Accuracy = 19.6cm NVA

Time periods have been converted from UTC to Central Standard Time for the metadata.

One missing DEM tile due to being a small sliver tile: 16S_GB_2201 (7286 total)

Two tiles 16S_GB_4540 and 16S_GB_4643 contain waterfalls which were not hydro-flattened properly due to the rugged terrain and steep drop in elevation in a short distance. We used waterfall_breaklines (included in the GA_9County_B1_hydro_breaklines.gpkg). The islands in these areas are less than one acre so were not included in the "Rivers" feature class in the GA_9County_B1_hydro_breaklines.gpkg.

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 > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION > DIGITAL ELEVATION/TERRAIN MODEL (DEM)
ISO 19115 Topic Category
elevation

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 > GEORGIA
Global Change Master Directory (GCMD) Location Keywords
VERTICAL LOCATION > LAND SURFACE

Instrument Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Instrument Keywords
LIDAR > Light Detection and Ranging

Platform Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Platform Keywords
Airplane > Airplane

Physical Location

Organization: Office for Coastal Management
City: Charleston
State/Province: SC

Data Set Information

Data Set Scope Code: Data Set
Data Set Type: Elevation
Maintenance Frequency: Unknown
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: USGS, Merrick-Surdex Joint Venture, LLP

Support Roles

Data Steward

CC ID: 1472683
Date Effective From: 2026
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

CC ID: 1472704
Date Effective From: 2026
Date Effective To:
Contact (Organization): U.S. Geological Survey
Address: 12201 Sunrise Valley Drive
Reston, VA 20191
USA
URL: USGS Home

Distributor

CC ID: 1472682
Date Effective From: 2026
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

CC ID: 1472684
Date Effective From: 2026
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

CC ID: 1472685
Date Effective From: 2026
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

CC ID: 1472688
W° Bound: -85.14329073777
E° Bound: -84.00197102541
N° Bound: 33.20888895281
S° Bound: 31.48587095238

Extent Group 1 / Time Frame 1

CC ID: 1472687
Time Frame Type: Range
Start: 2025-02-01
End: 2025-03-18

Spatial Information

Spatial Representation

Representations Used

Grid: Yes
Vector: No
Text / Table: No
TIN: No
Stereo Model: No
Video: No

Reference Systems

Reference System 1

CC ID: 1472707

Coordinate Reference System
CRS Type: Vertical
EPSG Code: EPSG:5703
EPSG Name: NAVD88 height
▾ See Full Coordinate Reference System Information

Reference System 2

CC ID: 1472706

Coordinate Reference System
CRS Type: Projected
EPSG Code: EPSG:6345
EPSG Name: NAD83(2011) / UTM zone 16N
▾ See Full Coordinate Reference System Information

Access Information

Data License: Universal (CC0 1.0) Public Domain Dedication
Data License URL: https://creativecommons.org/publicdomain/zero/1.0/
Data License Statement:

To the extent possible under law, the U.S. Government has waived all copyright and related or neighboring rights to this dataset.
Security Class: Unclassified
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

CC ID: 1472689
Download URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=14045/details/14045
Distributor: NOAA Office for Coastal Management (NOAA/OCM) (2026 - Present)
File Name: Customized Download
Description:

Create custom data files by choosing data area, map projection, file format, etc. A new metadata will be produced to reflect your request using this record as a base.
Distribution Format: Not Applicable
Compression: Zip

Distribution 2

CC ID: 1472690
Download URL: https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/OPR/Projects/GA_9County_D24/GA_9County_1_D24/TIFF/
Distributor: U.S. Geological Survey (2026 - Present)
File Name: Bulk Download
Description:

Bulk download of data files in the original coordinate system.
Distribution Format: GeoTIFF

URLs

URL 1

CC ID: 1472681
URL: https://coast.noaa.gov/dataviewer/
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.

URL 2

CC ID: 1472742
URL: https://prd-tnm.s3.amazonaws.com/StagedProducts/Elevation/metadata/GA_9County_D24/USGS_GA_9County_D24_Project_Report.pdf
Name: USGS Project Report
URL Type:
Online Resource
File Resource Format: pdf
Description:

Link to the USGS Project Report that provides information about the project, vertical accuracy results, and the point classes and sensors used.

URL 3

CC ID: 1472743
URL: https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/metadata/GA_9County_D24/
Name: USGS Additional Info
URL Type:
Online Resource
Description:

Link to the reports, breaklines, metadata, and spatial metadata.

URL 4

CC ID: 1472744
URL: https://prd-tnm.s3.amazonaws.com/StagedProducts/Elevation/metadata/GA_9County_D24/GA_9County_1_D24/reports/140G0224F0218-GA_9County_D24_WU_ID300845_Lidar_Mapping_Report.pdf
Name: Lidar Report
URL Type:
Online Resource
File Resource Format: pdf
Description:

Link to the Merrick-Surdex lidar report.

Data Quality

Horizontal Positional Accuracy:

The lidar data set was produced to meet ASPRS "Positional Accuracy Standards for Digital Geospatial Data" (2014) for a 20 (cm) RMSEx / RMSEy Horizontal Accuracy Class which equates to Positional Horizontal Accuracy = +/- 43 cm at a 95% confidence level.
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 DEM Vertical Accuracy:

Non-Vegetated Vertical Accuracy (NVA) = 3.1 cm RMSE

Vegetated Vertical Accuracy (VVA) = 11.04 cm at the 95th Percentile
Completeness Report:

The dataset was reviewed to ensure completeness and accuracy.
Conceptual Consistency:

Data covers the entire area specified for this project.

Lineage

Lineage Statement:

The NOAA Office for Coastal Management (OCM) ingested references to the USGS GeoTIFF files that are hosted on Amazon Web Services (AWS), into the Digital Coast Data Access Viewer (DAV). The DAV accesses the raster data as it resides on AWS.

Sources

USGS AWS GeoTIFF Files - GA_9County

CC ID: 1472745
Contact Role Type: Publisher
Contact Type: Organization
Contact Name: USGS
Citation URL: https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/OPR/Projects/GA_9County_D24/GA_9County_1_D24/TIFF/
Citation URL Name: USGS AWS GeoTIFF Files for GA_9County

Process Steps

Process Step 1

CC ID: 1472678
Description:

Using MARS software a half-meter (0.5m) 32-bit floating point DEM raster in GeoTIFF format (.tif) were created using the ground classified lidar points and breaklines. The files are delivered in tiles (1000 x 1000m).
Process Date/Time: 2025-09-21 00:00:00

Process Step 2

CC ID: 1472746
Description:

The NOAA Office for Coastal Management (OCM) created references to the USGS GeoTIFF files that were ingested into the NOAA Digital Coast Data Access Viewer (DAV). No changes were made to the data. The DAV will access the raster data as it resides on Amazon Web Services (AWS).

These are the GeoTIFF files that are being accessed:

https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/OPR/Projects/GA_9County_D24/GA_9County_1_D24/TIFF/
Process Date/Time: 2026-03-26 00:00:00
Process Contact: NOAA Office for Coastal Management (NOAA/OCM)
Email Address: coastal.info@noaa.gov
Phone (Voice): (843) 740-1202

Catalog Details

Catalog Item ID: 79479
GUID: gov.noaa.nmfs.inport:79479
Metadata Record Created By: Rebecca Mataosky
Metadata Record Created: 2026-03-25 15:05+0000
Metadata Record Last Modified By: Rebecca Mataosky
Metadata Record Last Modified: 2026-03-26 13:41+0000
Metadata Record Published: 2026-03-26
Owner Org: OCMP
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2026-03-26
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2027-03-26