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

2022 USGS Lidar DEM: Yurok Tribal Lands, CA

Data Set (DS)  |  OCM Partners (OCMP)
GUID: gov.noaa.nmfs.inport:77700  |  Updated: September 8, 2025  |  Published / External 
Short Citation:
Full Citation Examples
OCM Partners, 2026: 2022 USGS Lidar DEM: Yurok Tribal Lands, CA, https://www.fisheries.noaa.gov/inport/item/77700.

Item Identification

Title: 2022 USGS Lidar DEM: Yurok Tribal Lands, CA
Short Name: ca2022_yurok_dem_m10429
Status: Completed
Creation Date: 2022
Publication Date: 2025
Abstract:

Original Product: These are Digital Elevation Model (DEM) data for the USGS Yurok Tribe Ancestral Lands 3DEP LiDAR project. Class 2 (ground) lidar points in conjunction with the hydro breaklines were used to create a hydro-flattened DEM using LP360 2024.1.30.2.

Original Geographic Extent: This dataset and derived products encompass an area covering approximately 1,320 Square Kilometers of Northern California covering the lower Klamath River and surrounding areas.

Original Dataset Description: RAW flight line swaths were processed to create 1,456 classified LAS 1.4 files delineated in 1,000 m x 1,000 m tiles. Each LAS file contains LiDAR point information, which has been calibrated, controlled, and classified. Additional derived products include intensity images, hydro-flattened DEMs,

Maximum Surface Height Rasters, Swath Separation Images (SSIs), and 3D breaklines of rivers and lakes within the study area.

Ground conditions: Snow free, no unusual inundation. Coastal Areas were collected within plus or minus 120 minutes of predicted low tide at Crescent City, CA (841-9750).

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:

The purpose of the LiDAR data collection is to generate Quality Level 1 data for the USGS 3DEP program and supporting organizations. Raw Lidar point clouds were used to created classified LAS files, intensity images, hydroflattened Bare Earth Surface DEMs, and 3D breaklines of rivers and bodies of water.
Supplemental Information:

USGS Contract No. 140G0322Q0250

Project ID: 300077

Contractor: Yurok Tribe

Raster File Type = GeoTIFF (*.tif)

Bit Depth/Pixel Type = 32-bit float

Raster Cell Size = 0.5 Meter

Interpolation or Re-sampling Technique = Triangulated Irregular Network

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)
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > OCEANS > COASTAL PROCESSES > COASTAL ELEVATION
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 > CALIFORNIA
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
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: Yurok Tribe

Support Roles

Data Steward

CC ID: 1427532
Date Effective From: 2025
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: 1427531
Date Effective From: 2025
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: 1427561
Date Effective From: 2025
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: 1427533
Date Effective From: 2025
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: 1427534
Date Effective From: 2025
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: 1427537
W° Bound: -124.1422284
E° Bound: -123.6095125
N° Bound: 41.6847408
S° Bound: 41.1673048

Extent Group 1 / Time Frame 1

CC ID: 1427536
Time Frame Type: Range
Start: 2022-10-07
End: 2022-12-06

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: 1427569

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: 1427568

Coordinate Reference System
CRS Type: Projected
EPSG Code: EPSG:6339
EPSG Name: NAD83(2011) / UTM zone 10N
▾ 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: 1427538
Download URL: https://coast.noaa.gov/dataviewer/#/lidar /search/where:ID=10429 /details/10429
Distributor: NOAA Office for Coastal Management (NOAA/OCM) (2025 - 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: 1427539
Download URL: https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/OPR/Projects/CA_Yurok_T23/CA_Yurok_1_T23/TIFF/
Distributor: U.S. Geological Survey (2025 - Present)
File Name: Bulk Download
Description:

Bulk download of data files in GeoTIFF format, in UTM Zone 10 NAD83 (2011), meters coordinates and elevations in NAVD88 (GEOID18) meters.
Distribution Format: GeoTIFF

URLs

URL 1

CC ID: 1427529
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: 1427562
URL: https://prd-tnm.s3.amazonaws.com/StagedProducts/Elevation/metadata/CA_Yurok_T23/USGS_CA_Yurok_T23_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: 1427563
URL: https://prd-tnm.s3.amazonaws.com/StagedProducts/Elevation/metadata/CA_Yurok_T23/CA_Yurok_1_T23/reports/CA_Yurok_1_T23_LidarMappingReport_300077.pdf
Name: Lidar Report
URL Type:
Online Resource
File Resource Format: pdf
Description:

Link to the lidar report.

URL 4

CC ID: 1427564
URL: https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/metadata/CA_Yurok_T23/
Name: USGS Additional Info
URL Type:
Online Resource
Description:

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

Technical Environment

Description:

LP360 2024.1.30.2; TerraScan 022.027; RiProcess 1.9.2.4; POSPac 8.8; LAStools 20220202, Windows 10 Operating System

Data Quality

Horizontal Positional Accuracy:

Absolute horizontal accuracy was assessed using ground control points (GCPs), comprised of highly visible road markings throughout the DPA. A total of 8 GCPs were used to calculate horizontal accuracy against intensity images derived from LiDAR ground points. Based on the intensity analysis, this data set was produced to meet ASPRS Positional Accuracy Standards for Digital Geospatial Data (2014) for a 10 cm RMSEx / RMSEy Horizontal Accuracy Class which equates to Positional Horizontal Accuracy = +/- 24.5 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) = 6.01 cm RMSE

Vegetated Vertical Accuracy (VVA) = 19.24 cm at 95th Percentile
Completeness Report:

DEMs were created from the LAS files. These raw 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. Small void areas exist in extremely dense vegetation where tall trees have shaded adjacent line coverage. Ground control points has been used to assess the data and to calculate the vertical accuracy of project.
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

CC ID: 1427565
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/CA_Yurok_T23/CA_Yurok_1_T23/TIFF/
Citation URL Name: USGS AWS GeoTIFF files

Process Steps

Process Step 1

CC ID: 1427524
Description:

Lidar Pre-Processing: Base station control, airborne GNSS and IMU data were merged to develop a Single Best Estimate of trajectory (SBET) of the lidar system for each lift.

Lidar ranging data were initially calibrated using previous best parameters for this instrument and aircraft. Relative calibration was evaluated using advanced plane-matching analysis and parameter corrections derived.

This process was repeated iteratively until residual errors between overlapping swaths, across all project lifts, was reduced to 2 cm or less. The data was checked against independently surveyed check points.

Swath width was reduced from 58.5 degrees to 55 degrees with overlap points flagged as withheld.
Process Date/Time: 2024-03-29 00:00:00

Process Step 2

CC ID: 1427525
Description:

Lidar Post-Processing: Classify data to ground and other client designated classifications using proprietary classification algorithms. Manually QC data classifications.
Process Date/Time: 2024-12-20 00:00:00

Process Step 3

CC ID: 1427526
Description:

Hydroflattening Breaklines and Hydroflattened DEM: Breaklines were created using ArcGIS and LP360 Software using automated and manual methods to create hydro polygons around water surfaces.

A centerline for each polygon was created and conflated to the water surface. Double-line drain methods were used to assign the waters edge elevation to match the surface elevation at the center of the water,

hydroflattening each of the hydropolygons. Lakes and Ponds were assigned a consistent elevation, river polygons were assigned consistent elevations on each bank, and smoothed to ensure downstream flow.

For more details on breakline creation, see accompanying LiDAR Mapping Report.

"Raster File Type = GeoTIFF (*.tif)

Bit Depth/Pixel Type = 32-bit float

Raster Cell Size = 0.5 Meter

Interpolation or Re-sampling Technique = Triangulated Irregular Network

Required Vertical Accuracy = 19.6 cm NVA"
Process Date/Time: 2024-12-20 00:00:00

Process Step 4

CC ID: 1427566
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/CA_Yurok_T23/CA_Yurok_1_T23/TIFF/
Process Date/Time: 2025-09-08 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: 77700
GUID: gov.noaa.nmfs.inport:77700
Metadata Record Created By: Rebecca Mataosky
Metadata Record Created: 2025-09-08 19:19+0000
Metadata Record Last Modified By: Rebecca Mataosky
Metadata Record Last Modified: 2025-09-08 20:56+0000
Metadata Record Published: 2025-09-08
Owner Org: OCMP
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2025-09-08
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2026-09-08