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Data Set Info
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Catalog Details

Summary

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Short Citation
OCM Partners, 2024: 2017 WRCD USFS Lidar DEM: Wenatchee, WA, https://www.fisheries.noaa.gov/inport/item/69769.
Full Citation Examples

Abstract

Geographic Extent: This data set is consisting of lidar point cloud, classified lidar, and digital elevation model, which all pieces encompasses the WRCD 2017 Lidar area of interest (AOI), approximately 128 square miles or 318 square kilometers. Data set Description: This dataset consists of tiled digital elevation models. The Geoid12B model was applied to convert from ellipsoid to NAVD88 heights.

Ground Conditions: water at normal levels; no unusual inundation; no snow; leaf off

Distribution Information

  • 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.

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be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions.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

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

Geographic Area 1

-120.845293° W, -120.509471° E, 47.915124° N, 47.638272° S

Time Frame 1
2017-10-05 - 2017-10-15

Item Identification

Title: 2017 WRCD USFS Lidar DEM: Wenatchee, WA
Short Name: 2017 Wenatchee DEM m9824
Status: Completed
Publication Date: 2023-05-02
Abstract:

Geographic Extent: This data set is consisting of lidar point cloud, classified lidar, and digital elevation model, which all pieces encompasses the WRCD 2017 Lidar area of interest (AOI), approximately 128 square miles or 318 square kilometers. Data set Description: This dataset consists of tiled digital elevation models. The Geoid12B model was applied to convert from ellipsoid to NAVD88 heights.

Ground Conditions: water at normal levels; no unusual inundation; no snow; leaf off

Purpose:

The primary purpose of the lidar survey was to establish measurements of the bare earth surface, as well as top surface feature data for providing geometric inputs for modeling, other numerical modeling and economic related assessments.

Supplemental Information:

All lidar data was acquired, calibrated, and used in the creation of lidar derived products by Atlantic.

Keywords

Theme Keywords

Thesaurus Keyword
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 > WASHINGTON
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:

Lidar tiles and associated derived products for WRCD

Distribution Liability:

The data represented is the result of data collection and processing per contract specifications and indicates the general existing conditions at the time of data collection. As such, it is only valid for its intended use, content, time, and accuracy specifications. The user is responsible for the results of any application of the data for other than its intended purpose.

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: Washington Resource Conservation and Development Council; U.S. Forest Service; Atlantic, Inc.

Support Roles

Data Steward

CC ID: 1230338
Date Effective From: 2023
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: 1230337
Date Effective From: 2023
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: 1230339
Date Effective From: 2023
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: 1230340
Date Effective From: 2023
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: 1299253
W° Bound: -120.845293
E° Bound: -120.509471
N° Bound: 47.915124
S° Bound: 47.638272

Extent Group 1 / Time Frame 1

CC ID: 1299252
Time Frame Type: Range
Start: 2017-10-05
End: 2017-10-15

Spatial Information

Spatial Resolution

Horizontal Distance: 1.0 Meter

Spatial Representation

Grid Representation 1

CC ID: 1230513
Dimension Count: 2
Cell Geometry: Point
Transformation Parameters Available?: Yes

Axis Dimension 1

Dimension Type: Row
Size: 1500
Resolution Type: Length
Resolution: 1.0 Meter

Reference Systems

Reference System 1

CC ID: 1299250

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: 1299249

Coordinate Reference System

CRS Type: Projected
EPSG Code: EPSG:9674
EPSG Name: NAD83 / USFS R6 Albers
See Full Coordinate Reference System Information

Access Information

Security Class: Unclassified
Data Access Procedure:

Data is available online for bulk or 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: 1230344
Start Date: 2023-05-02
End Date: Present
Download URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=9824/details/9824
Distributor: NOAA Office for Coastal Management (NOAA/OCM) (2023 - 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.

File Type (Deprecated): Zip
Compression: Zip

Distribution 2

CC ID: 1230345
Start Date: 2023-05-02
End Date: Present
Download URL: https://noaa-nos-coastal-lidar-pds.s3.us-east-1.amazonaws.com/dem/USFS_Wenatchee_DEM_2017_9824/index.html
Distributor: NOAA Office for Coastal Management (NOAA/OCM) (2023 - Present)
File Name: Bulk Download
Description:

Bulk download of data files in the original coordinate system.

File Type (Deprecated): GeoTiff
Distribution Format: GeoTIFF

URLs

URL 1

CC ID: 1230333
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: 1230334
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: 1230335
URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9823/supplemental/2017_Upper_Wenatchee_extent_m9823.kmz
Name: Browse graphic
URL Type:
Browse Graphic
File Resource Format: KML
Description:

This graphic displays the footprint for this lidar data set.

URL 4

CC ID: 1230336
URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9823/supplemental/17080_Aerial_Lidar_Report.pdf
Name: Dataset report
URL Type:
Online Resource
File Resource Format: PDF
Description:

Link to data set report.

Data Quality

Horizontal Positional Accuracy:

Horizontal error in lidar derived elevation data is largely a function of positional error as derived from the Global Navigation Satellite System (GNSS), attitude (angular orientation) error (as derived from the INS) and flying altitude; and can be estimated based on these parameters. Qualitative value: 40.0 cm, Test that produced the valued: As described in Section 7.5 of the ASPRS Positional Accuracy Standards for Digital Geospatial Data the horizontal errors in lidar data are largely a function of GNSS positional error, INS angular error, and flying altitude. Therefore, lidar data collected with GNSS error of 8cm and the IMU error of 0.00427 degrees at an altitude of 2,900m; the expected radial horizontal positional error will be RMSEr = 40.0cm.

Vertical Positional Accuracy:

Vertical Accuracy of the point cloud and bare-earth lidar data was assessed and reported in accordance with the ASPRS Positional Accuracy Standards for Digital Geospatial Data;

Twenty-Eight (28) surveyed points were measured for the purpose of assessing the accuracy of the lidar data. Required CVA: 29.4cm. Required FVA : 19.6cm. Actual FVA accuracy of the bare-earth was found to be +/- 14.5 cm at 95% confidence level. Actual CVA accuracy was found to be +/-13.5 cm at the 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:

All lidar data and lidar derived data covers the entire 128 square mile area of interest for the project area. 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

Sources

WRCD Digital Elevation Model

CC ID: 1299240
Extent Type: Range
Extent Start Date/Time: 2017-10-05
Extent End Date/Time: 2017-10-15
Scale Denominator: 1200
Source Contribution:

This data source was used (along with the airborne GPS/IMU Data) to georeferencing of the Lidar point cloud data used to create all contracted Lidar derivative products. Version of the LAS Standard 1.4 / point data record format 6.

Process Steps

Process Step 1

CC ID: 1299241
Description:

Aerial Lidar Acquisition: Aerial data collection was acquired in five (5) flight missions, using the ALS70 SN#7123/7225 at an altitude of 2900 meters AGL. Airborne GPS and IMU data was collected during the acquisition. Data acquisition was completed on October 15, 2017.

Process Date/Time: 2017-10-15 00:00:00

Process Step 2

CC ID: 1299242
Description:

Lidar Pre-processing: Airborne GPS and IMU data were merged to develop a Smoothed Best Estimate 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 interactively until residual errors between overlapping swaths, across all project lifts, was reduced to 2 cm or less. Data were then block adjusted to match surveyed calibration control. Raw data NVA were checked using independently surveyed check points. Swath overage points were identified and tagged within each swath file

Process Date/Time: 2017-10-15 00:00:00

Process Step 3

CC ID: 1299243
Description:

Initial processing of the GPS data was processed using Inertial Explorer. The solution file was generated and CloudPro software was used to generate georeferenced laser returns which were then processed in strip form allowing for the QC of the overlap between strips (lines). The data from each line were combined and automated classification routines run to determine the initial surface model. This initial surface model was then verified to the surveyed test points.

Process Date/Time: 2017-10-16 00:00:00

Process Step 4

CC ID: 1299244
Description:

Lidar Post-Processing: The calibrated and controlled lidar swaths were processed using automatic point classification routines in TerraSolid software. These routines operate against the entire collection (all swaths, all lifts), eliminating character differences between files. Data were then distributed as virtual tiles to experienced Lidar analysts for localized automatic classification, manual editing, and peer-based QC checks. Supervisory QC monitoring of work in progress and completed editing ensured consistency of classification character and adherence to project requirements across the entire project. All classification tags are stored in the original swath files. After completion of classification and final QC approval, the NVA and VVA for the project are calculated. Sample areas for each land cover type present in the project were extracted and forwarded to the client, along with the results of the accuracy tests. Upon acceptance, the complete classified Lidar swath files were delivered to the client.

Process Date/Time: 2017-10-30 00:00:00

Process Step 5

CC ID: 1299245
Description:

Lidar Classification: The calibrated Lidar data was run through automated classification routines and then manually checked and edited. The data was classified into the following classes: 1-unclassified*, 2-ground, 7-low noise and 18-high noise

Process Date/Time: 2017-12-15 00:00:00

Process Step 6

CC ID: 1299246
Description:

Bare-Earth DEM Creation: Bare-Earth digital elevation models (DEMs) were derived using the bare-earth (ground) lidar points, all DEMs were created with a grid spacing of 1 meter. The DEMs were cut to tiles of 1500 meters X 1500 meters index.

Process Date/Time: 2018-02-15 00:00:00

Process Step 7

CC ID: 1299247
Description:

Data were received from US Forest Service by NOAA Office for Coastal Management in Imagine (*.img) format with the Albers USFS region 6 projection (EPSG:9674) in meters. Vertical values were NAVD88 with Geoid12b. The format was converted to cloud optimized geotiff for ingest into the Digital Coast Data Access Viewer.

Process Date/Time: 2023-04-28 00:00:00
Process Contact: NOAA Office for Coastal Management (NOAA/OCM)
Phone (Voice): (843) 740-1202
Email Address: coastal.info@noaa.gov
Source: WRCD Digital Elevation Model

Related Items

Item Type Relationship Type Title
Data Set (DS) Cross Reference 2017 WRCD USFS Lidar: Upper Wenatchee, WA

Point cloud used to create this DEM.

Catalog Details

Catalog Item ID: 69769
GUID: gov.noaa.nmfs.inport:69769
Metadata Record Created By: Kirk Waters
Metadata Record Created: 2023-05-02 13:27+0000
Metadata Record Last Modified By: Kirk Waters
Metadata Record Last Modified: 2024-01-10 19:29+0000
Metadata Record Published: 2024-01-10
Owner Org: OCMP
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2023-05-02
Metadata Review Frequency: 3 Years
Metadata Next Review Date: 2026-05-02