58004
2017 OLC Lidar DEM: Grass Valley, OR
or2017_grass_valley_dem_m8900_metadata
Data Set
Published / External
49404
DEMs - partner (no harvest)
Project
Completed
2017-08-04
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.
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.
Theme
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION
Theme
ISO 19115 Topic Category
elevation
Spatial
Global Change Master Directory (GCMD) Location Keywords
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > OREGON
Spatial
Global Change Master Directory (GCMD) Location Keywords
VERTICAL LOCATION > LAND SURFACE
Instrument
Global Change Master Directory (GCMD) Instrument Keywords
LIDAR > Light Detection and Ranging
Platform
Global Change Master Directory (GCMD) Platform Keywords
Airplane > Airplane
Theme
LiDAR, 3DEP, DEM, Raster, LAS
Elevation data
Theme
LiDAR, 3DEP, DEM, Raster, LAS
Hydrology
Theme
LiDAR, 3DEP, DEM, Raster, LAS
LAS Point Cloud
Theme
LiDAR, 3DEP, DEM, Raster, LAS
Lidar
Theme
LiDAR, 3DEP, DEM, Raster, LAS
model
Theme
LiDAR, 3DEP, DEM, Raster, LAS
remote sensing
Theme
DEM
Theme
beach
Theme
erosion
Office for Coastal Management
Charleston
SC
Data Set
Elevation
None Planned
Model (digital)
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.
Quantum Spatial, Inc. flew the LiDAR and processed the data, Oregon Lidar Consortium (OLC)
Data Steward
2019
Organization
NOAA Office for Coastal Management
NOAA/OCM
coastal.info@noaa.gov
2234 South Hobson Ave
Charleston
SC
29405-2413
(843) 740-1202
https://coast.noaa.gov
NOAA Office for Coastal Management Home Page
Online Resource
Distributor
2019
Organization
NOAA Office for Coastal Management
NOAA/OCM
coastal.info@noaa.gov
2234 South Hobson Ave
Charleston
SC
29405-2413
(843) 740-1202
https://coast.noaa.gov
NOAA Office for Coastal Management Home Page
Online Resource
Metadata Contact
2019
Organization
NOAA Office for Coastal Management
NOAA/OCM
coastal.info@noaa.gov
2234 South Hobson Ave
Charleston
SC
29405-2413
(843) 740-1202
https://coast.noaa.gov
NOAA Office for Coastal Management Home Page
Online Resource
Point of Contact
2019
Organization
NOAA Office for Coastal Management
NOAA/OCM
coastal.info@noaa.gov
2234 South Hobson Ave
Charleston
SC
29405-2413
(843) 740-1202
https://coast.noaa.gov
NOAA Office for Coastal Management Home Page
Online Resource
Ground Condition
-121.048812
-120.390527
45.659959
44.721728
Range
2017-04-22
2017-05-04
Yes
No
No
No
No
Vertical
EPSG:8228
NAVD88 height (ft)
North American Vertical Datum 1988
1
Gravity-related height
H
foot
up
Unclassified
Data is available online for bulk and custom downloads.
None
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.
2019-10-18
https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=8900
2019
Organization
NOAA Office for Coastal Management
Customized Download
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.
Zip
Zip
2019-10-18
https://noaa-nos-coastal-lidar-pds.s3.us-east-1.amazonaws.com/dem/OLC_Grass_Valley_DEM_2017_8900/index.html
2019
Organization
NOAA Office for Coastal Management
Bulk Download
Bulk download of data files in Oregon Lambert NAD83(2011) international feet coordinates and NAVD88 (Geoid12B) elevations in feet.
2019-10-18T00:00:00
GeoTIFF
GeoTIFF
https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/8903/supplemental/or2017_grass_valley_m8903.kmz
Browse graphic
Browse Graphic
KML
This graphic displays the footprint for this lidar data set.
https://coast.noaa.gov/dataviewer/
NOAA's Office for Coastal Management (OCM) Data Access Viewer (DAV)
Online Resource
HTML
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.
https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=8903
Online Resource
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.
https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/8903/supplemental/OLC_Grass_Valley_Data_Report_2017.pdf
Dataset report
Online Resource
PDF
Link to data set report.
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
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.
Yes
Unknown
Yes
NCEI-CO
Data is backed up to tape and to cloud storage.
Lidar RAW Data for OLC Grass Valley2017
Organization
Quantum Spatial, Inc.
Originator
2017-08-04
Range
2017-03-22
2017-05-01
This data source was used to populate the lidar point cloud data.
1
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.
2
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.
3
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.
2019-10-17T00:00:00
Organization
Office for Coastal Management
OCM
2234 South Hobson Avenue
Charleston
SC
29405-2413
https://www.coast.noaa.gov/
58003
Data Set
2017 OLC Lidar: Grass Valley, OR
Cross Reference
gov.noaa.nmfs.inport:58004
Rebecca Mataosky
2019-10-18T11:14:02
Kirk Waters
2024-01-10T19:08:55
2024-01-10
OCM Partners
OCMP
1002
Public
No
2022-03-16
1 Year
2023-03-16