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OCM Partners Metadata Library > DEMs - partner (no harvest) >

2024 USGS Lidar DEM: 11 County, AL

Data Set (DS)  |  OCM Partners (OCMP)
GUID: gov.noaa.nmfs.inport:79768  |  Updated: May 14, 2026  |  Published / External 
Summary
Item Identification
Keywords
Physical Location
Data Set Info
Support Roles
Extents
Spatial Info
Access Info
Distribution Info
URLs
Tech Environment
Data Quality
Lineage
Acquisition Info
Catalog Details

Summary

Short Citation
OCM Partners, 2026: 2024 USGS Lidar DEM: 11 County, AL, https://www.fisheries.noaa.gov/inport/item/79768.
Full Citation Examples

Abstract

This metadata record supports the digital elevation model (DEM) data for the 2024 USGS Lidar DEM: 11 County, AL dataset 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.

The Digital Elevation Model dataset consists of tiled LiDAR DEM Images. Each file contains a Raster Image of the Digital Elevation Model. The Geographical Extent of the original dataset extends to the entirety of the AL_11County_B23 boundary, approximately 7740 square miles of the AOIs. The eleven counties are: Cherokee, Cullman, Etowah, Fayette, Franklin, Jefferson, Lamar, Limestone, Marion, Walker, Winston.

Purpose

The USGS and NRCS contracted Digital Aerial Solutions, LLC to obtain professional services related to the planning, acquisition and development of Light Detection and Ranging (Lidar) data and derivative products. The task order is for a QL1 LiDAR survey to be collected over Cullman, Cherokee, Etowah, Jefferson, Winston, Walker, Limestone, Franklin, Marion, Lamar, and Fayette counties in the State of Alabama. The deliverable products would be used to support the State of Alabama, and the 3DEP mission.

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be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions.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

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

-88.297923° W, -85.378033° E, 35.000108° N, 33.234958° S

Area of collection for AL_11County_2 (Work Unit 300842)

Time Frame 1
2024-02-05 - 2024-03-27

Dates of collection for AL_11County_2 (Work Unit 300842)

Item Identification

Title: 2024 USGS Lidar DEM: 11 County, AL
Short Name: al2024_11county_dem_m14161
Status: Completed
Creation Date: 2024
Publication Date: 2026
Abstract:

This metadata record supports the digital elevation model (DEM) data for the 2024 USGS Lidar DEM: 11 County, AL dataset 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.

The Digital Elevation Model dataset consists of tiled LiDAR DEM Images. Each file contains a Raster Image of the Digital Elevation Model. The Geographical Extent of the original dataset extends to the entirety of the AL_11County_B23 boundary, approximately 7740 square miles of the AOIs. The eleven counties are: Cherokee, Cullman, Etowah, Fayette, Franklin, Jefferson, Lamar, Limestone, Marion, Walker, Winston.
Purpose:

The USGS and NRCS contracted Digital Aerial Solutions, LLC to obtain professional services related to the planning, acquisition and development of Light Detection and Ranging (Lidar) data and derivative products. The task order is for a QL1 LiDAR survey to be collected over Cullman, Cherokee, Etowah, Jefferson, Winston, Walker, Limestone, Franklin, Marion, Lamar, and Fayette counties in the State of Alabama. The deliverable products would be used to support the State of Alabama, and the 3DEP mission.
Supplemental Information:

All Lidar data and associated products were acquired, calibrated, and used in the creation of Lidar derived products by Digital Aerial Solutions, LLC.

Raster File Type = GeoTIFF

Bit Depth/Pixel Type = 32-bit float

Raster Cell Size = 0.5 Meter

Interpolation or Resampling Technique = Bilinear Interpolation

Required Vertical Accuracy = 19.6 cm NVA

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 > ALABAMA
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: As Needed
Data Presentation Form: Model (digital)
Entity Attribute Detail Citation:

None
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, Digital Aerial Solutions, LLC

Support Roles

Data Steward

CC ID: 1481185
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: 1481184
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: 1481230
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

Metadata Contact

CC ID: 1481186
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: 1481187
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 Description:

AL_11County_2 (Work Unit 300842)

Extent Group 1 / Geographic Area 1

CC ID: 1481190
W° Bound: -88.297923
E° Bound: -85.378033
N° Bound: 35.000108
S° Bound: 33.234958
Description

Area of collection for AL_11County_2 (Work Unit 300842)

Extent Group 1 / Time Frame 1

CC ID: 1481189
Time Frame Type: Range
Start: 2024-02-05
End: 2024-03-27
Description:

Dates of collection for AL_11County_2 (Work Unit 300842)

Extent Group 2

Extent Description:

AL_11County_1 (Work Unit 300841)

Extent Group 2 / Geographic Area 1

CC ID: 1481264
W° Bound: -88.291482
E° Bound: -87.22581
N° Bound: 34.587714
S° Bound: 33.38776
Description

Area of collection for AL_11County_1 (Work Unit 300841)

Extent Group 2 / Time Frame 1

CC ID: 1481267
Time Frame Type: Range
Start: 2024-02-10
End: 2024-03-27
Description:

Dates of collection for AL_11County_1 (Work Unit 300841)

Spatial Information

Spatial Resolution

Horizontal Distance: 0.5 Meter

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: 1481272

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: 1481274

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: 1481191
Download URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=14161/details/14161
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: 1481192
Download URL: https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/OPR/Projects/AL_11County_B23/
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: 1481181
URL: https://coast.noaa.gov/
Name: NOAA's Office for Coastal Management (OCM) website
URL Type:
Online Resource
File Resource Format: HTML
Description:

Information on the NOAA Office for Coastal Management (OCM)

URL 2

CC ID: 1481182
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 3

CC ID: 1481281
URL: https://prd-tnm.s3.amazonaws.com/StagedProducts/Elevation/metadata/AL_11County_B23/USGS_AL_11County_B23_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, the point classes and sensors used.

URL 4

CC ID: 1481282
URL: https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/metadata/AL_11County_B23/
Name: USGS Additional Info
URL Type:
Online Resource
Description:

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

URL 5

CC ID: 1481283
URL: https://prd-tnm.s3.amazonaws.com/StagedProducts/Elevation/metadata/AL_11County_B23/AL_11County_1_B23/reports/project_report/AL_11County_1_B23_LIdarMappingReport.pdf
Name: Lidar Report - AL_11County_1
URL Type:
Online Resource
File Resource Format: pdf
Description:

Link to the Digital Aerial Solutions, Inc. lidar report for AL_11County_1.

URL 6

CC ID: 1481290
URL: https://prd-tnm.s3.amazonaws.com/StagedProducts/Elevation/metadata/AL_11County_B23/AL_11County_2_B23/reports/project_report/AL_11County_2_B23_LIdarMappingReport.pdf
Name: Lidar Report - AL_11County_2
URL Type:
Online Resource
File Resource Format: pdf
Description:

Link to the Digital Aerial Solutions, Inc. lidar report for AL_11County_2.

Technical Environment

Description:

Inertial Explorer ver: 8.9; GeoCue Ver: 2020.1.22.1; Microstation CONNECT 10.12.00.40 ;TerraScan v021.034; LP360 ver: 2021.1.47.0; ArcMap ver: 10.7; Global Mapper ver: 18.1

Data Quality

Horizontal Positional Accuracy:

Not tested
Vertical Positional Accuracy:

This data set was produced to meet ASPRS Positional Accuracy Standard for Digital Geospatial Data (2023) for a 10-cm RMSEz Vertical Accuracy.

USGS Determined DEM Vertical Accuracy:

Non-Vegetated Vertical Accuracy (NVA) = 5.47 cm RMSE

Vegetated Vertical Accuracy (VVA) = 13.86 cm at 95th Percentile
Completeness Report:

The RAW LAS data files included 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. The RAW point cloud is of good quality and data passes Fundamental Vertical Accuracy specifications. Void areas (i.e., areas outside the project boundary but within the tiling scheme) are coded using a unique NODATA value. This value is identified in the appropriate location within the file header.
Conceptual Consistency:

Aerial LiDAR data covers the entire 7740 square miles Area of Interest intended for this project. All LiDAR Point Cloud tiles show no edge artifacts or mismatches from tile to tile. Void areas (i.e., areas outside the project boundary but within the tiling scheme) are coded using a unique NODATA value. This value is identified in the appropriate location within the file header. Data cover 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 - AL_11County_1

CC ID: 1481293
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/AL_11County_B23/AL_11County_1_B23/TIFF/
Citation URL Name: USGS AWS GeoTIFF Files for AL_11County_1

USGS AWS GeoTIFF Files - AL_11County_2

CC ID: 1481294
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/AL_11County_B23/AL_11County_2_B23/TIFF/
Citation URL Name: USGS AWS GeoTIFF Files for AL_11County_2

Process Steps

Process Step 1

CC ID: 1481179
Description:

Bare-Earth DEM Creation: Bare-Earth Digital Elevation Models (DEMs) are created using TIN surface method in LP360 with the hydro break line and bare-earth (ground) LiDAR points, all DEMs were created with a grid spacing of 0.5 Meters. The DEMs were cut to tiles of 1,000 Meters X 1,000 Meters index, provided by the US Geological Survey.
Process Date/Time: 2025-03-01 00:00:00

Process Step 2

CC ID: 1481295
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/AL_11County_B23/AL_11County_1_B23/TIFF/

https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/OPR/Projects/AL_11County_B23/AL_11County_2_B23/TIFF/
Process Date/Time: 2026-05-14 00:00:00
Process Contact: NOAA Office for Coastal Management (NOAA/OCM)
Email Address: coastal.info@noaa.gov
Phone (Voice): (843) 740-1202

Acquisition Information

Instruments

Instrument 1

CC ID: 1481296
Identifier: Leica Terrain Mapper
Instrument / Gear: Instrument
Instrument Type: Lidar
Description:

Leica Terrain Mapper is a compact laser-based system designed for the acquisition of high-density topographic and return signal intensity data from a variety of airborne platforms, at flying heights up to 5500 m AGL

Catalog Details

Catalog Item ID: 79768
GUID: gov.noaa.nmfs.inport:79768
Metadata Record Created By: Rebecca Mataosky
Metadata Record Created: 2026-05-14 19:23+0000
Metadata Record Last Modified By: Rebecca Mataosky
Metadata Record Last Modified: 2026-05-14 20:46+0000
Metadata Record Published: 2026-05-14
Owner Org: OCMP
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2026-05-14
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2027-05-14