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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, 2024: 2008 USFS Lidar DEM: Sherman Pass, Colville NF, WA, https://www.fisheries.noaa.gov/inport/item/69357.
Full Citation Examples

Abstract

Digital Elevation Model (DEM) created from Light Detection and Ranging data (lidar) of the Colville National Forest Study Area. The requested lidar area of interest (AOI) totals approximately 160 square miles, or 102,243 acres. This area was buffered by 100 meters to ensure data coverage, resulting in a total area flown (TAF) of 105,074 acres.

Distribution Information

Access Constraints:

None

Use Constraints:

None

Controlled Theme Keywords

elevation, TERRAIN ELEVATION

Child Items

No Child Items for this record.

Contact Information

Metadata Contact
NOAA Office for Coastal Management (NOAA/OCM)
coastal.info@noaa.gov
(843) 740-1202

Extents

Geographic Area 1

-118.6703° W, -118.112° E, 48.7066° N, 48.5114° S

Time Frame 1
2008-06-15 - 2008-06-24

Initial collection

Time Frame 2
2008-09-05

collection to fill gaps

Item Identification

Title: 2008 USFS Lidar DEM: Sherman Pass, Colville NF, WA
Short Name: 2008 USFS dem sherman pass m9765
Status: Completed
Creation Date: 2008-11-05
Publication Date: 2023-02-09
Abstract:

Digital Elevation Model (DEM) created from Light Detection and Ranging data (lidar) of the Colville National Forest Study Area. The requested lidar area of interest (AOI) totals approximately 160 square miles, or 102,243 acres. This area was buffered by 100 meters to ensure data coverage, resulting in a total area flown (TAF) of 105,074 acres.

Purpose:

Provide a digital elevation model for forestry management.

Notes:

This metadata was created years after the data collection based upon the available project report from the lidar contractor.

Keywords

Theme Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN 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

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

Data Set Information

Data Set Scope Code: Data Set
Data Set Type: Elevation
Maintenance Frequency: As Needed
Data Presentation Form: Model (digital)
Entity Attribute Overview:

LAS format data with attributes of x, y, z, intensity, seconds of gps week,

Entity Attribute Detail URL: https://www.asprs.org/wp-content/uploads/2010/12/asprs_las_format_v11.pdf

Support Roles

Data Steward

CC ID: 1221139
Date Effective From: 2023-02-09
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: 1221138
Date Effective From: 2023-02-09
Date Effective To:
Contact (Organization): Office for Coastal Management (OCM)
Address: 2234 South Hobson Avenue
Charleston, SC 29405-2413
URL: https://www.coast.noaa.gov/

Metadata Contact

CC ID: 1221140
Date Effective From: 2023-02-09
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

Extent Group 1

Extent Description:

Colville National Forest Study Area

Extent Group 1 / Geographic Area 1

CC ID: 1299052
W° Bound: -118.6703
E° Bound: -118.112
N° Bound: 48.7066
S° Bound: 48.5114

Extent Group 1 / Time Frame 1

CC ID: 1299050
Time Frame Type: Range
Start: 2008-06-15
End: 2008-06-24
Description:

Initial collection

Extent Group 1 / Time Frame 2

CC ID: 1299051
Time Frame Type: Discrete
Start: 2008-09-05
Description:

collection to fill gaps

Spatial Information

Spatial Resolution

Horizontal Distance: 3.0 Foot

Spatial Representation

Representations Used

Grid: Yes

Vector Representation 1

CC ID: 1221146
Point Object Present?: Yes
Point Object Count: 3767993261

Reference Systems

Reference System 1

CC ID: 1299047

Coordinate Reference System

CRS Type: Projected
EPSG Code: EPSG:2926
EPSG Name: NAD83(HARN) / Washington North (ftUS)
See Full Coordinate Reference System Information

Reference System 2

CC ID: 1299048

Coordinate Reference System

CRS Type: Vertical
EPSG Code: EPSG:6360
EPSG Name: NAVD88 height (ftUS)
See Full Coordinate Reference System Information

Access Information

Security Class: Unclassified
Data Access Constraints:

None

Data Use Constraints:

None

Metadata Access Constraints:

None

Metadata Use Constraints:

None

Distribution Information

Distribution 1

CC ID: 1221141
Start Date: 2023-02-09
End Date: Present
Download URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=9765
Distributor: Office for Coastal Management (OCM) (2023-02-09 - Present)
Description:

Custom download allowing user selection of area, projection, format, etc.

File Type (Deprecated): Zip
Compression: Zip

Distribution 2

CC ID: 1221142
Start Date: 2023-02-09
End Date: Present
Download URL: https://noaa-nos-coastal-lidar-pds.s3.us-east-1.amazonaws.com/dem/USFS_Sherman_Pass_DEM_2008_9765/index.html
Distributor: Office for Coastal Management (OCM) (2023-02-09 - Present)
Description:

Bulk download of files.

File Type (Deprecated): GeoTIFF
Distribution Format: GeoTIFF

URLs

URL 1

CC ID: 1221143
URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9753/supplemental/Colville_Data_Report_2008.pdf
Name: Colville Data Report
URL Type:
Online Resource
File Resource Format: pdf
Description:

Data report from the contractor. Represents the data as delivered to USFS. Modifications have occurred to the data, as noted in this metadata.

Data Quality

Vertical Positional Accuracy:

absolute accuracy RMSE = 0.08 feet (0.024 meters)

standard deviation = 0.13 feet (0.04 meters)

Note: These are the values from the data report. RMSE less than standard deviation does not make mathematical sense! Relative accuracy from examining overlapping flightlines has a standard deviation of 0.29 feet (0.09 meters). Given these inconsistencies, the true absolute accuracy is unclear and it may be safer to use a value on the order of 0.10 meters.

Lineage

Process Steps

Process Step 1

CC ID: 1299044
Description:

The LiDAR survey utilized a Leica ALS50 Phase II sensor mounted in a Cessna Caravan 208B. The Leica ALS50 Phase II system was set to acquire greater than 105,000 laser pulses per second (i.e. 105 kHz pulse rate) and flown at 900 meters above ground level (AGL), capturing a scan angle of ±14 degrees from nadir (see Table 2.1). These settings are developed to yield points with an average native pulse density of 8 points per square meter over terrestrial surfaces. Some types of surfaces (i.e., dense vegetation or water) may return fewer pulses than the laser originally emitted. Therefore, the delivered density can be less than the native density and vary according to distributions of terrain, land cover, and water bodies.

The study area was surveyed with opposing flight line side-lap of at least 50% (100% overlap) to reduce laser shadowing and increase surface laser painting. The system allows up to four range measurements per pulse, and all discernable laser returns were processed for the output dataset.

Process Date/Time: 2008-09-05 00:00:00

Process Step 2

CC ID: 1299045
Description:

Point cloud data were classified for ground points by Watershed Sciences. Ground points were given a point class of two (2) as specified by the LAS 1.1 format. Unclassified points were given a class of one (1). DEMs were created from the point clouds, though the interpolation method is not known.

Process Step 3

CC ID: 1299046
Description:

DEM files were received by NOAA from US Forest Service in Washington State Plane North NAD83(HARN), NAVD88/Geoid03 as ESRI coverages. For ingest into the Digital Coast Data Access Viewer, the data were converted to Cloud Optimized GeoTiff format and appropriate EPSG codes were added.

Process Date/Time: 2023-02-09 00:00:00
Process Contact: NOAA Office for Coastal Management (NOAA/OCM)
Phone (Voice): (843) 740-1202
Email Address: coastal.info@noaa.gov

Catalog Details

Catalog Item ID: 69357
GUID: gov.noaa.nmfs.inport:69357
Metadata Record Created By: Kirk Waters
Metadata Record Created: 2023-02-23 20:18+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: 2023-02-09
Metadata Review Frequency: 3 Years
Metadata Next Review Date: 2026-02-09