Slide Menu
Search Help Show/Hide Menu
Short Citation:
OCM Partners, 2023: 2007 Sumpter Powder River Mine Lidar,

Item Identification

Title: 2007 Sumpter Powder River Mine Lidar
Short Name: or2007_usda_sumpter_m2606_metadata
Status: Completed
Publication Date: 2014-01-03

Watershed Sciences, Inc. (WS) collected Light Detection and Ranging (LiDAR) data for the USDA

Forest Service on September 17, 2007. The project covers an 8-mile reach of the

Powder River in northeast Oregon, downstream of the town of Sumpter. The extent of

requested LiDAR area totals over 3,146 acres; the map below shows the extent of the

LiDAR area to be delivered, covering nearly 3,208 acres. The delivered acreage for the study area is

greater than the original amount due to buffering of the original AOI and flight planning



Provide high resolution terrain elevation and land cover elevation data.



Supplemental Information:

A footprint of this data set may be viewed in Google Earth at:

Reports explaining collection and quality assurance is available at:


Theme Keywords

Thesaurus Keyword
ISO 19115 Topic Category
None LAZ

Physical Location

Organization: Office for Coastal Management
City: Charleston
State/Province: SC

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: As Needed
Data Presentation Form: laz
Entity Attribute Overview:

LiDAR points in LAZ format (ASPRS Classes 1,2)

Entity Attribute Detail Citation:


Distribution Liability:

Any conclusions drawn from the analysis of this information are not the responsibility

of Watershed Sciences, USDA, PSLC, NOAA, the Office for Coastal Management or its partners.

Support Roles

Data Steward

CC ID: 682520
Date Effective From: 2014-01-03
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address:
Phone: (843) 740-1202


CC ID: 682522
Date Effective From: 2014-01-03
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address:
Phone: (843) 740-1202

Metadata Contact

CC ID: 682523
Date Effective From: 2014-01-03
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address:
Phone: (843) 740-1202

Point of Contact

CC ID: 682521
Date Effective From: 2014-01-03
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address:
Phone: (843) 740-1202


Currentness Reference: Ground Condition

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 1134987
W° Bound: -118.2087333
E° Bound: -118.085049
N° Bound: 44.74167319
S° Bound: 44.68345132

Extent Group 1 / Time Frame 1

CC ID: 1134986
Time Frame Type: Discrete
Start: 2007-09-17

Spatial Information

Spatial Representation

Representations Used

Vector: Yes

Access Information

Security Class: Unclassified
Data Access Procedure:

This data can be obtained on-line at the following URL:


Data Access Constraints:


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. These data depict the heights at the time of the survey and are only accurate for that time.

Distribution Information

Distribution 1

CC ID: 741974
Download URL:
File Name: Customized Download

Create custom data files by choosing data area, product type, map projection, file format, datum, etc.

Distribution 2

CC ID: 741975
Download URL:
File Name: Bulk Download

Simple download of data files.



CC ID: 741977
URL Type:
Online Resource


CC ID: 741978
URL Type:
Online Resource


CC ID: 741979
Name: Browse Graphic
URL Type:
Browse Graphic
File Resource Format: kmz

This graphic shows the lidar coverage for the Sumpter, Oregon collected in 2007.

Activity Log

Activity Log 1

CC ID: 682539
Activity Date/Time: 2016-05-23

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 682538
Activity Date/Time: 2017-11-14

Converted from FGDC Content Standards for Digital Geospatial Metadata (version FGDC-STD-001-1998) using '' script. Contact Tyler Christensen (NOS) for details.

Activity Log 3

CC ID: 718481
Activity Date/Time: 2018-02-08

Partial upload of Positional Accuracy fields only.

Activity Log 4

CC ID: 741976
Activity Date/Time: 2018-03-13

Partial upload to move data access links to Distribution Info.

Data Quality


Elevations are recorded in floating-point meters and the vertical datum is ellipsoidal (GEOID03).

Horizontal Positional Accuracy:

Horizontal positional accuracy for LiDAR is dependent upon the quality of

the GPS/INS solution, sensor calibration and ground conditions at the time of data capture.

The standard system results for horizontal accuracy are less than 1 meter. Not reported, assumed as 1.0 m.

; Quantitative Value: 1.0 meters, Test that produced the value: See LiDAR data report.

Vertical Positional Accuracy:

Review the report citing as supplemental information above for details on accuracy assessment.; Quantitative Value: 0.02 meters, Test that produced the value:

Accuracies calculated to be 0.02 meters at 1-sigma,

2 sigma standard deviations absolute accuracy calculated as 0.04 meters.

Completeness Report:

LiDAR data has been collected and processed for all areas within the project study area.

Conceptual Consistency:

Laser points were collected over the study areas using a LiDAR laser system set to acquire

points with full overlap (i.e., =50% side-lap) to ensure complete coverage and minimize laser

shadows created by buildings and tree canopies. Figure 2 below illustrates the location, swath

width and the overlap of the planned flight lines for the Sumpter AOI. A real-time kinematic

(RTK) survey was conducted in the study area for quality assurance purposes. The accuracy of

the LiDAR data is described as standard deviations of divergence (sigma ~ s) from RTK ground

survey points and root mean square error (RMSE) which considers bias (upward or downward).

These statistics are calculated cumulatively.


Process Steps

Process Step 1

CC ID: 1134982


The LiDAR survey utilized a Leica ALS50 Phase II mounted in Cessna Caravan 208B. The full

survey was conducted September 17, 2007.

The Leica ALS50 Phase II system was set to acquire =105,000 laser pulses per second (i.e. 105

kHz pulse rate) and flown at 800 meters above ground level (AGL), capturing a scan angle of

plus\minus 14o from nadir2. These settings are developed to yield points with an average native density

of =8 points per square meter over terrestrial surfaces. The native pulse density is the number

of pulses emitted by the LiDAR system. 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 lightly variable according to distributions of

terrain, land cover and water bodies.

Process Date/Time: 2007-09-17 00:00:00

Process Step 2

CC ID: 1134983

1. Resolve kinematic corrections for aircraft position data using kinematic aircraft GPS and

static ground GPS data.

2. Develop a smoothed best estimate of trajectory (SBET) file that blends the post-processed

aircraft position with altitude.

3. Calculate laser point position by associating the SBET position to each laser point return

time, scan angle, intensity, etc. Creates raw laser point cloud data for the entire survey in


4. Import raw laser points into manageable blocks (less than 500 mb) to perform manual relative

accuracy calibration and filter for pits/birds. Ground points are then classified for individual

flights lines (to be used for relative accuracy testing and calibration).

5. Using ground classification points per each flight line, the relative accuracy is tested.

Automated line-to-line calibrations are then performed for system attitude parameters (pitch, roll,

heading), mirror flex (scale) and GPS/IMU drift. Calibrations are performed on ground classified

points from paired flights lines. Every flight line is used for relative accuracy calibration.

6. Position and attitude data are imported. Resulting data are classified as ground and

non-ground points. Statistical absolute accuracy is assessed via direct comparisons of ground

classified points to ground RTK survey data. Data are then converted to orthometric elevations

(NAVD88) by applying a Geoid03 correction. Ground models are created as a triangulated surface

and exported as ArcInfo ASCII grids at a 1-meter pixel resolution.

Process Step 3

CC ID: 1134984

The NOAA Office for Coastal Management (OCM) downloaded topographic files in LAZ format from the Puget Sound Lidar Consortium's (PSLC) website. The files contained lidar easting, northing, elevation, intensity, return number, class, scan angle and GPS time measurements; the data was received in UTM Zone 11 (in meters) and vertical coordinates were referenced to NAVD88 in meters using the Geoid03 model.

OCM performed the following processing for data storage and Digital Coast provisioning purposes:

1. The All-Return LAZ files were checked for bad elevations

2. The laz files were converted from a Projected Coordinate System (UTM Zone 11) to a Geographic Coordinate system (NAD83)

3. The laz files were then converted to ellipsoidal vertical units in meters.

Process Date/Time: 2013-11-20 00:00:00

Catalog Details

Catalog Item ID: 49900
GUID: gov.noaa.nmfs.inport:49900
Metadata Record Created By: Anne Ball
Metadata Record Created: 2017-11-15 15:23+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2022-08-09 17:11+0000
Metadata Record Published: 2022-03-16
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