2017 OLC Lidar DEM: Grass Valley, OR
Data Set (DS) | OCM Partners (OCMP)GUID: gov.noaa.nmfs.inport:58004 | Updated: January 10, 2024 | Published / External
Item Identification
Title: | 2017 OLC Lidar DEM: Grass Valley, OR |
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Short Name: | or2017_grass_valley_dem_m8900_metadata |
Status: | Completed |
Publication Date: | 2017-08-04 |
Abstract: |
No metadata record for this data set was provided to the NOAA Office for Coastal Management (OCM). This record was created with information from the data report. A link to the data report is provided in the URL section of this metadata record. Geographic Extent: OLC Grass Valley Project Area, covering approximately 228,146 acres. Dataset Description: Quantum Spatial, Inc. (QSI) acquired and processed lidar data describing the Oregon Lidar Consortium's (OLC) Grass Valley Study Area. Lidar data acquisition occurred between April 22 and May 4, 2017. Settings for lidar data capture produced an average resolution of at least 8 points per square meter. The resolution of the DEM is 3 ft.
In addition to these bare earth Digital Elevation Model (DEM) data, the lidar point data that these DEM data were created from, are also available. These data are available for custom download at the link provided in the URL section of this metadata record. |
Purpose: |
The collection of high resolution geographic data is part of an ongoing pursuit to amass a library of information accessible to government agencies, as well as the general public. |
Keywords
Theme Keywords
Thesaurus | Keyword |
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Global Change Master Directory (GCMD) Science Keywords |
EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION
|
ISO 19115 Topic Category |
elevation
|
UNCONTROLLED | |
LiDAR, 3DEP, DEM, Raster, LAS | Elevation data |
LiDAR, 3DEP, DEM, Raster, LAS | Hydrology |
LiDAR, 3DEP, DEM, Raster, LAS | LAS Point Cloud |
LiDAR, 3DEP, DEM, Raster, LAS | Lidar |
LiDAR, 3DEP, DEM, Raster, LAS | model |
LiDAR, 3DEP, DEM, Raster, LAS | remote sensing |
None | beach |
None | DEM |
None | erosion |
Spatial Keywords
Thesaurus | Keyword |
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Global Change Master Directory (GCMD) Location Keywords |
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > OREGON
|
Global Change Master Directory (GCMD) Location Keywords |
VERTICAL LOCATION > LAND SURFACE
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Instrument Keywords
Thesaurus | Keyword |
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Global Change Master Directory (GCMD) Instrument Keywords |
LIDAR > Light Detection and Ranging
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Platform Keywords
Thesaurus | Keyword |
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Global Change Master Directory (GCMD) Platform Keywords |
Airplane > Airplane
|
Physical Location
Organization: | Office for Coastal Management |
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City: | Charleston |
State/Province: | SC |
Data Set Information
Data Set Scope Code: | Data Set |
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Data Set Type: | Elevation |
Maintenance Frequency: | None Planned |
Data Presentation Form: | Model (digital) |
Distribution Liability: |
Any conclusions drawn from the analysis of this information are not the responsibility of Quantum Spatial, Inc., the Oregon Lidar Consortium, DOGAMI, NOAA, the Office for Coastal Management or its partners. |
Data Set Credit: | Quantum Spatial, Inc. flew the LiDAR and processed the data, Oregon Lidar Consortium (OLC) |
Support Roles
Data Steward
Date Effective From: | 2019 |
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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
Date Effective From: | 2019 |
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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
Date Effective From: | 2019 |
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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
Date Effective From: | 2019 |
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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 |
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Extent Group 1
Extent Group 1 / Geographic Area 1
W° Bound: | -121.048812 | |
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E° Bound: | -120.390527 | |
N° Bound: | 45.659959 | |
S° Bound: | 44.721728 |
Extent Group 1 / Time Frame 1
Time Frame Type: | Range |
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Start: | 2017-04-22 |
End: | 2017-05-04 |
Spatial Information
Spatial Representation
Representations Used
Grid: | Yes |
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Vector: | No |
Text / Table: | No |
TIN: | No |
Stereo Model: | No |
Video: | No |
Reference Systems
Reference System 1
Coordinate Reference System |
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Access Information
Security Class: | Unclassified |
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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
Start Date: | 2019-10-18 |
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End Date: | Present |
Download URL: | https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=8900 |
Distributor: | NOAA Office for Coastal Management (NOAA/OCM) (2019 - Present) |
File Name: | Customized Download |
Description: |
Create custom data files by choosing data area, product type, map projection, file format, datum, 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
Start Date: | 2019-10-18 |
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End Date: | Present |
Download URL: | https://noaa-nos-coastal-lidar-pds.s3.us-east-1.amazonaws.com/dem/OLC_Grass_Valley_DEM_2017_8900/index.html |
Distributor: | NOAA Office for Coastal Management (NOAA/OCM) (2019 - Present) |
File Name: | Bulk Download |
Description: |
Bulk download of data files in Oregon Lambert NAD83(2011) international feet coordinates and NAVD88 (Geoid12B) elevations in feet. |
File Date/Time: | 2019-10-18 00:00:00 |
File Type (Deprecated): | GeoTIFF |
Distribution Format: | GeoTIFF |
URLs
URL 1
URL: | https://coast.noaa.gov/dataviewer/ |
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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
URL: | https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/8903/supplemental/or2017_grass_valley_m8903.kmz |
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Name: | Browse graphic |
URL Type: |
Browse Graphic
|
File Resource Format: | KML |
Description: |
This graphic displays the footprint for this lidar data set. |
URL 3
URL: | https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/8903/supplemental/OLC_Grass_Valley_Data_Report_2017.pdf |
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Name: | Dataset report |
URL Type: |
Online Resource
|
File Resource Format: | |
Description: |
Link to data set report. |
URL 4
URL: | https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=8903 |
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URL Type: |
Online Resource
|
Description: |
Link to custom download, from the Data Access Viewer (DAV), the lidar point data from which these raster Digital Elevation Model (DEM) data were created. |
Technical Environment
Description: |
LiDAR Mapping Suite 2.4, Applanix PosPac 7.1, Microstation Version 8.0, TerraScan Version 16, TerraModeler Version 16, TerraMatch Version 16, ESRI ArcGIS 10.3.1, Windows 7 Operating System |
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Data Quality
Vertical Positional Accuracy: |
Vertical Accuracy reporting is designed to meet guidelines presented in the National Standard for Spatial Data Accuracy (NSSDA) (FGDC, 1998) and the ASPRS Positional Accuracy Standards for Digital Geospatial Data V1.0 (ASPRS, 2014). The statistical model compares known reserved ground survey points (GSPs) to the ground model, triangulated from the neighboring laser points. Vertical accuracy statistical analysis uses ground survey points in open areas where the lidar system has a "very high probability" that the sensor will measure the ground surface at the 95th percentile. For the OLC Grass Valley study area, a total of 1694 ground control points were collected and used for calibration of the lidar data. An additional 121 reserved ground points were collected for independent verification, resulting in a non-vegetated vertical accuracy (NVA) of 0.70 meters, or 0.231 feet. The RMSE is 3.6 cm. |
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Data Management
Have Resources for Management of these Data Been Identified?: | Yes |
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Approximate Percentage of Budget for these Data Devoted to Data Management: | Unknown |
Do these Data Comply with the Data Access Directive?: | Yes |
Actual or Planned Long-Term Data Archive Location: | NCEI-CO |
How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive?: |
Data is backed up to tape and to cloud storage. |
Lineage
Sources
Lidar RAW Data for OLC Grass Valley2017
Contact Role Type: | Originator |
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Contact Type: | Organization |
Contact Name: | Quantum Spatial, Inc. |
Publish Date: | 2017-08-04 |
Extent Type: | Range |
Extent Start Date/Time: | 2017-03-22 |
Extent End Date/Time: | 2017-05-01 |
Source Contribution: |
This data source was used to populate the lidar point cloud data. |
Process Steps
Process Step 1
Description: |
The lidar survey utilized a Leica ALS 80 sensor mounted in a Cessna Grand Caravan. The system settings were developed to yield points with an average native density of greater than 8 pulses per square meter over terrestrial surfaces. The study area was surveyed with opposing flight line side-lap of greater than 60 percent with at least 100 percent overlap to reduce laser shadowing and increase surface laser painting. The system allows up to four range measurements per pulse, and all discernible laser returns were processed for the output data set. |
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Process Step 2
Description: |
Ground control points and ground survey points were collected using real time kinematic (RTK), post-processed kinematic (PPK), and fast static (FS) survey techniques. For RTK surveys, a base receiver was positioned at a nearby monument to broadcast a kinematic correction to a roving receiver, for PPK and FS surveys, however, these corrections were post-processed. RTK and PPK surveys recorded observations for a minimum of 5 seconds, while FS surveys recorded observations for up to 15 minutes on each GCP/GSP in order to support longer baselines for post-processing. All GCP and GSP measurements were made during periods with a Position Dilution of Precision (PDOP) no greater than 3.0 and in view of at least 6 satellites for both receivers. Relative errors for the position were required to be less than 1.5 centimeters horizontal and 2.0 centimeters vertical in order to be accepted. In order to facilitate comparisons with high quality lidar data, GCP and GSP measurements were not taken on highly reflective surfaces such as center line stripes of lane markings on roads. GCPs and GSPs were taken no closer than one meter to any nearby terrain breaks such as road edges or drop offs. GCPs and GSPs were collected within as many flight lines as possible: however, the distribution depended on ground access constraints and may not be equitably distributed throughout the study area. |
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Process Step 3
Description: |
The NOAA Office for Coastal Management (OCM) received 25 raster DEM files in ESRI ArcGrid format from DOGAMI. The data were in Oregon Lambert NAD83(2011), international feet, coordinates and NAVD88 (Geoid12b) elevations in international feet. The bare earth raster files were at a 3 ft grid spacing. OCM performed the following processing on the data for Digital Coast storage and provisioning purposes: 1. Used internal script to assign the EPSG codes and convert to GeoTiff format. 2. Copied to the files to https. |
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Process Date/Time: | 2019-10-17 00:00:00 |
Process Contact: | Office for Coastal Management (OCM) |
Catalog Details
Catalog Item ID: | 58004 |
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GUID: | gov.noaa.nmfs.inport:58004 |
Metadata Record Created By: | Rebecca Mataosky |
Metadata Record Created: | 2019-10-18 11:14+0000 |
Metadata Record Last Modified By: | Kirk Waters |
Metadata Record Last Modified: | 2024-01-10 19:08+0000 |
Metadata Record Published: | 2024-01-10 |
Owner Org: | OCMP |
Metadata Publication Status: | Published Externally |
Do Not Publish?: | N |
Metadata Last Review Date: | 2022-03-16 |
Metadata Review Frequency: | 1 Year |
Metadata Next Review Date: | 2023-03-16 |