2006 USFS Lidar: Rogue River - Siskiyou National Forest - Ashland, OR
Data Set (DS) | OCM Partners (OCMP)GUID: gov.noaa.nmfs.inport:69875 | Updated: October 17, 2023 | Published / External
Summary
Short Citation
OCM Partners, 2025: 2006 USFS Lidar: Rogue River - Siskiyou National Forest - Ashland, OR, https://www.fisheries.noaa.gov/inport/item/69875.
Full Citation Examples
Watershed Sciences, Inc. (WS) collected Light Detection and Ranging (LiDAR) data of the Ashland study area in the Rogue River-Siskiyou National Forest on July 1st-4th, 2006 (Julian Days 182-185). The survey area encompassed the city of Ashland as well as the Ashland Creek Watershed, resulting in a delivered LiDAR area of 46,253 acres.
Laser points were collected over the study area using an Optech ALTM 3100 LiDAR system. Full overlap (i.e. 50% sidelap) ensured complete coverage and
minimized laser shadows created by buildings and tree canopies. A real-time kinematic (RTK) survey was conducted throughout the study area for quality assurance purposes.
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.
Distribution Information
-
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.
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LAS/LAZ - LASer
Bulk download of lidar files in laz format, geographic coordinates, orthometric heights.
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be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions.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.
Controlled Theme Keywords
elevation, TERRAIN 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
https://coast.noaa.gov
Metadata Contact
NOAA Office for Coastal Management (NOAA/OCM)
coastal.info@noaa.gov
(843) 740-1202
https://coast.noaa.gov
Extents
-122.82078° W,
-122.614675° E,
42.219622° N,
42.06215° S
2006-07-01 - 2006-07-04
Dates of collection.
Item Identification
Title: | 2006 USFS Lidar: Rogue River - Siskiyou National Forest - Ashland, OR |
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Short Name: | 2006 ashland m9829 |
Status: | Completed |
Creation Date: | 2023-05-09 |
Abstract: |
Watershed Sciences, Inc. (WS) collected Light Detection and Ranging (LiDAR) data of the Ashland study area in the Rogue River-Siskiyou National Forest on July 1st-4th, 2006 (Julian Days 182-185). The survey area encompassed the city of Ashland as well as the Ashland Creek Watershed, resulting in a delivered LiDAR area of 46,253 acres.
Laser points were collected over the study area using an Optech ALTM 3100 LiDAR system. Full overlap (i.e. 50% sidelap) ensured complete coverage and minimized laser shadows created by buildings and tree canopies. A real-time kinematic (RTK) survey was conducted throughout the study area for quality assurance purposes. 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. |
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. |
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
|
Spatial Keywords
Thesaurus | Keyword |
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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 > OREGON
|
Global Change Master Directory (GCMD) Location Keywords |
VERTICAL LOCATION > LAND SURFACE
|
Instrument Keywords
Thesaurus | Keyword |
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Global Change Master Directory (GCMD) Instrument Keywords |
LIDAR > Light Detection and Ranging
|
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: | Point Cloud (Digital) |
Distribution Liability: |
Any conclusions drawn from the analysis of this information are not the responsibility of the USDA Forest Service, DOGAMI, NOAA, the Office for Coastal Management or its partners. |
Data Set Credit: | USDA Forest Service; Watershed Sciences, Inc. |
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: | -122.82078 | |
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E° Bound: | -122.614675 | |
N° Bound: | 42.219622 | |
S° Bound: | 42.06215 |
Extent Group 1 / Time Frame 1
Time Frame Type: | Range |
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Start: | 2006-07-01 |
End: | 2006-07-04 |
Description: |
Dates of collection. |
Spatial Information
Spatial Resolution
Horizontal Distance: | 0.4 Meter |
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Spatial Representation
Representations Used
Vector: | Yes |
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Vector Representation 1
Point Object Present?: | Yes |
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Point Object Count: | 1501957685 |
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: | 2023-05-09 |
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End Date: | Present |
Download URL: | https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=9829 |
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: | 2023-05-09 |
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End Date: | Present |
Download URL: | https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9829/index.html |
Distributor: | NOAA Office for Coastal Management (NOAA/OCM) (2019 - Present) |
File Name: | Bulk Download |
Description: |
Bulk download of lidar files in laz format, geographic coordinates, orthometric heights. |
File Type (Deprecated): | LAZ |
Distribution Format: | LAS/LAZ - LASer |
Compression: | Zip |
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/geoid18/9829/supplemental/2006_Ashland_extent_m9829.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/geoid18/9829/supplemental/LiDAR_Data_Report_Ashland.pdf |
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Name: | Data report |
URL Type: |
Online Resource
|
File Resource Format: | |
Description: |
Data report |
Data Quality
Vertical Positional Accuracy: |
Absolute Accuracy: The final quality control measure is a statistical accuracy assessment that compares known RTK ground survey points to the closest laser point. Standard Deviation: 0.04 meters Average Deviation: 0 meters RMSE: 0.04 meters Minimum delta z: -0.16 meters Maximum delta z: 0.18 meters n: 859 |
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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
Lineage Statement: |
Watershed Sciences, Inc. (WS) collected Light Detection and Ranging (LiDAR) data of the Ashland study area for the United States Forest Service (USFS) in the Rogue River-Siskiyou National Forest from July 1st to July 4th, 2006. NOAA OCM received the data and ingested it into the Digital Coast Data Access Viewer for distribution. |
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Sources
processed lidar data
Contact Role Type: | Originator |
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Contact Type: | Organization |
Contact Name: | Watershed Sciences (WSI) |
raw lidar data
Contact Role Type: | Originator |
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Contact Type: | Organization |
Contact Name: | Watershed Sciences (WSI) |
Process Steps
Process Step 1
Description: |
Acquisition. The LiDAR survey utilized an Opetch ALTM 3100 mounted in the belly of a Cessna Grand Caravan 208B. The survey was conducted on July 1st-4th, 2006 (Julian Days 182-185). Quality control (QC) pre-mission flights were performed based on manufacturerâs specifications prior to the survey. The QC flight was conducted at the Ashland, Oregon Airport using known surveyed control points. The positional accuracy of the LiDAR (x, y, z) returns are checked against these known locations to verify the calibration and to report base accuracy. Operational settings included: Laser pulse repetition rate: 70 kHz Operating altitude: 1100 m above ground level Flight speed: 105 knots Scan Angle: +/- 14 degrees from Nadir Scan Pattern: Sawtooth Laser Footprint diameter on ground: 30 cm Number of returns per laser pulse: up to 4 Multi-swath pulse density: at least 7.5 pulses per square meter |
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Process Date/Time: | 2006-07-04 00:00:00 |
Process Step 2
Description: |
Applications and work flow overview: 1. POSGPS: Monument static GPS data are processed with aircraft GPS data to resolve kinematic corrections. 2. POSProc: Aircraft attitude data are incorporated with post processed aircraft kinematic GPS data. 3. REALM: Laser point data are calculated for the entire survey in *.las format. 4. TerraScan: Data are imported, manually calibrated and filtered for pits/birds. 5. TerraMatch: Internal consistencies derived from GPS and IMU drift are measured and corrected. 6. TerraScan: Develop ground models, statistical accuracy assessments, Geoid03 application, projection changes and transformations. Aircraft Kinematic GPS and IMU Data LiDAR survey datasets are referenced to 1Hz static ground GPS that are set up prior to the LiDAR aircraft survey flight. While surveying, the aircraft collects 2Hz kinematic GPS data. The onboard inertial measurement unit (IMU) collects 200 Hz aircraft attitude data. POSGPS v. 4.2 is used to process the kinematic corrects for the aircraft. The static and kinematic GPS data are then post-processed after the survey to obtain accurate GPS solution and aircraft positions during times of the survey. POSProc v. 4.2 is used to develop a trajectory file that includes corrected aircraft position and attitude information. The trajectory data for the entire flight survey session is incorporated into a final trajectory file that contains accurate and continuous aircraft positions and attitudes. |
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Process Step 3
Description: |
Laser Point Processing Laser point coordinates were computed using the REALM v. 3.5.2 software suite based on independent data from the LiDAR system (pulse time, scan angle), aircraft attitude, and aircraft position. Laser point returns (first through fourth) are assigned an associated (x, y, z) coordinate, along with unique intensity values (1-255). The data are output into one very large LAS v. 1.0 file format; each point has a corresponding scan angle, return number (echo), intensity, and x,y,z (easting, northing, and elevation) information. The initial laser point file is too large to process. To facilitate laser point processing, bins (polygons) were created to divide the dataset into manageable sizes (less than 500 MB and approximately 1 km2 each). Flight lines and LiDAR data were then reviewed to ensure complete coverage of the study area and positional accuracy of the laser points. These processing bins were ultimately aggregated into areas of 0.9375-minute quadrangles (1/64th of a standard USGS 7.5-minute quadrangle). Once the laser point data are imported into bins in TerraScan, a manual calibration test is performed to assess the system offsets for pitch, roll, yaw and scale. Using a geometric relationship developed by Watershed Sciences, each of these offsets is resolved and corrected if necessary. The LiDAR points are then filtered for noise, pits and birds by screening for absolute elevation limits, isolated points and height above ground. Each bin is then inspected for pits and birds manually, and spurious points are removed. For a bin measuring 1 km2, an average of 20-40 points are found to be artificially low or high. The internal calibration is refined using TerraMatch. Points from overlapping lines are tested for internal consistency and final adjustments are made for system misalignments (i.e. pitch, roll, yaw and scale offsets). Once these misalignments are corrected, GPS drift can then be resolved and removed. The resulting dataset is internally calibrated using both manual and automated routines. At this point in the workflow, remaining data have passed initial screening and are deemed accurate. The TerraScan software suite is designed specifically for classifying near-ground laser points (Soinenen, 2004). The processing sequence begins by âremovingâ all points that are not ânearâ the earth based on evaluation of the multi-return layers. The resulting bare earth (ground) model is visually inspected and additional ground modeling is performed in site specific areas (over a 50 meter radius) to improve ground detail. This is only done in areas with known ground modeling deficiencies, such as: bedrock outcrops, cliffs, deeply incised stream banks, and dense vegetation. |
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Process Step 4
Description: |
The NOAA Office for Coastal Management (OCM) received lidar point cloud files in laz format from the U.S. Forest Service. The files contained lidar elevation and intensity measurements. The data were in UTM 10N coordinates and NAVD88 (Geoid03) elevations, with all units in meters. The data were classified as: 1-Unclassified, 2-Ground. OCM converted the data from orthometric (NAVD88) elevations to ellipsoid elevations using the Geoid 03 model and converted from UTM 10N NAD83 coordinates in meters, to geographic coordinates. Geokeys were also assigned. These conversions were done to ingest the data into the Digital Coast Data Access Viewer. |
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Process Date/Time: | 2023-05-09 00:00:00 |
Process Contact: | NOAA Office for Coastal Management (NOAA/OCM) |
Phone (Voice): | (843) 740-1202 |
Email Address: | coastal.info@noaa.gov |
Source: | processed lidar data |
Related Items
Item Type | Relationship Type | Title |
---|---|---|
Data Set (DS) | Cross Reference |
2006 USFS Lidar DEM: Rogue River - Siskiyou National Forest - Ashland, OR DEM created from this point cloud |
Catalog Details
Catalog Item ID: | 69875 |
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GUID: | gov.noaa.nmfs.inport:69875 |
Metadata Record Created By: | Kirk Waters |
Metadata Record Created: | 2023-05-09 11:04+0000 |
Metadata Record Last Modified By: | SysAdmin InPortAdmin |
Metadata Record Last Modified: | 2023-10-17 16:12+0000 |
Metadata Record Published: | 2023-05-09 |
Owner Org: | OCMP |
Metadata Publication Status: | Published Externally |
Do Not Publish?: | N |
Metadata Last Review Date: | 2023-05-09 |
Metadata Review Frequency: | 3 Years |
Metadata Next Review Date: | 2026-05-09 |