Slide Menu
Search Help Show/Hide Menu
Short Citation:
OCM Partners, 2023: 2009 Puget Sound LiDAR Consortium (PSLC) Topographic LiDAR: San Juan County and Lummi Island, Washington,

Item Identification

Title: 2009 Puget Sound LiDAR Consortium (PSLC) Topographic LiDAR: San Juan County and Lummi Island, Washington
Short Name: wa2009_pslc_sanjuan_m1464_metadata
Status: Completed
Publication Date: 2013-02

The dataset encompasses portions of San Juan and Whatcom counties in northwest Washington. The surveyed area is approximately 222 square miles. The LAS V1.1 files are classified into Class 1 (Unclassified) and Class 2 (Bare Earth)

water points are included in both classes. The LAS files are all-return and also include intensity measurements. 50% overlap was used between flightines, resulting in each area being surveyed twice. The nominal point spacing of

the data is 0.408 meters (6 pt/sq. meter).

Watershed Sciences, Inc. collected the LiDAR and created this data set for the Puget Sound LiDAR Consortium

Original contact information:

Contact Name: Diana Martinez

Contact Org: Puget Sound LiDAR Consortium

Phone: 206-971-3052


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:


Theme Keywords

Thesaurus Keyword
ISO 19115 Topic Category
None bare earth
None bare ground
None high-resolution

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: las
Entity Attribute Overview:

LiDAR points in LAS 1.1 format

Entity Attribute Detail Citation:


Distribution Liability:

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

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

Data Set Credit: Puget Sound LiDAR Consortium

Support Roles

Data Steward

CC ID: 692596
Date Effective From: 2013-02
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: 692598
Date Effective From: 2013-02
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: 692599
Date Effective From: 2013-02
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: 692597
Date Effective From: 2013-02
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: 1133557
W° Bound: -123.203513
E° Bound: -122.577637
N° Bound: 49.002581
S° Bound: 48.413671

Extent Group 1 / Time Frame 1

CC ID: 1133556
Time Frame Type: Range
Start: 2009-02-13
End: 2009-04-30

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: 743360
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: 743361
Download URL:
File Name: Bulk Download

Simple download of data files.



CC ID: 743363
URL Type:
Online Resource


CC ID: 743364
URL Type:
Online Resource


CC ID: 743365
Name: Browse Graphic
URL Type:
Browse Graphic
File Resource Format: kmz

This graphic shows the lidar coverage for portions of San Juan and Whatcom Counties in Washington.

Activity Log

Activity Log 1

CC ID: 692620
Activity Date/Time: 2016-05-23

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 692619
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: 718763
Activity Date/Time: 2018-02-08

Partial upload of Positional Accuracy fields only.

Activity Log 4

CC ID: 743362
Activity Date/Time: 2018-03-13

Partial upload to move data access links to Distribution Info.

Technical Environment


Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog

Data Quality

Vertical Positional Accuracy:

Statements of statistical accuracy apply to fixed terrestrial surfaces only and may not be applied to areas of dense vegetation or steep terrain. To calibrate laser accuracy for the

LiDAR dataset, 2644 RTK ground survey points were collected on fixed, hard-packed road surfaces within the survey area.

; Quantitative Value: 0.042 meters, Test that produced the value:

The Vertical Root Mean Square Error (RMSEz) of the data set is 0.042m (0.136 feet). Accuracy was assessed using 2644 ground survey (real time kinematic) points. Please see LiDAR data report for a discussion of statistics

related to these datasets.

Completeness Report:

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

Conceptual Consistency:

LiDAR flight lines have been examined to ensure that there was at least 50% sidelap, there are no gaps between flightlines, and overlapping flightlines have consistent elevation values.

Shaded relief images have been visually inspected for data errors such as pits, border artifacts, gaps, and shifting. The data was examined at a 1:2000 scale.


Process Steps

Process Step 1

CC ID: 1133551


The LiDAR data was collected between February 13th-17th, 2009 and April 30th, 2009. The survey used a Leica ALS50 Pase II laser system mounted in a Cessna Caravan 208B, and an Optech 3100 laser system mounted in a Cessna

Caravan 208B. Near nadir scan angles were used to increase penetration of vegetation to ground surfaces. Ground level GPS and aircraft IMU were collected during the flight.

Process Step 2

CC ID: 1133552


1. Flight lines and data were reviewed to ensure complete coverage of the study area and positional accuracy of the laser points.

2. Laser point return coordinates were computed using ALS Post Processor software, IPAS Pro GPS/INS software, REALM survey suite, and PosPac software, based on independent data from the LiDAR system, IMU, and aircraft.

3. The raw LiDAR file was assembled into flight lines per return with each point having an associated x, y, and z coordinate.

4. Visual inspection of swath to swath laser point consistencies within the study area were used to perform manual refinements of system alignment.

5. Custom algorithms were designed to evaluate points between adjacent flight lines. Automated system alignment was computed based upon randomly selected swath to swath accuracy measurements that consider elevation, slope, and

intensities. Specifically, refinement in the combination of system pitch, roll and yaw offset parameters optimize internal consistency.

6. Noise (e.g., pits and birds) was filtered using ALS postprocessing software and REALM software tools, based on known elevation ranges and included the removal of any cycle slips.

7. Using TerraScan and Microstation, ground classifications utilized custom settings appropriate to the study area.

8. The corrected and filtered return points were compared to the RTK ground survey points collected to verify the vertical and horizontal accuracies.

9. Points were output as laser points, TINed and GRIDed surfaces.

Process Step 3

CC ID: 1133553

Metadata imported.

Process Date/Time: 2009-06-22 00:00:00

Process Step 4

CC ID: 1133554

The NOAA Office for Coastal Management (OCM) received classified topographic files in LAS V1.1 format. The files contained lidar

elevation measurements. The data were received in Washington State Plane North Zone 4601, NAD83 coordinates

and were vertically referenced to NAVD88 using the Geoid03 model. The vertical units of the data were

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

1. All elevations below -4 feet were filtered and removed using LasTools' las2las tool.

2. The topographic las files were converted from orthometric (NAVD88) heights to ellipsoidal heights using Geoid03.

3. The topographic las files were converted from a Projected Coordinate System (WA SP North) to a Geographic Coordinate system (NAD 83).

4. The topographic las files' vertical units were converted from feet to meters.

5. The topographic las files' horizontal units were converted from feet to decimal degrees.

Process Date/Time: 2013-02-01 00:00:00

Catalog Details

Catalog Item ID: 50158
GUID: gov.noaa.nmfs.inport:50158
Metadata Record Created By: Anne Ball
Metadata Record Created: 2017-11-15 15:24+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