Puget Sound Lidar Supermosiac

The first-draft 30-foot 2010 supermosaic!

You can download the 1,563,520,462-byte March 22 30-foot version of the LiDAR supermosaic as a zipped filegeodatabase. The six-foot version is available. This does not comprise all the PSLC holdings, but is cut off at the Cascade Crest and arbitrarily around the bottom of Lewis County. Components, from highest precedence to lowest are:
Hey, kids, find 6 errors in the following table and win fourth prize!

location	date	agency	vendor	resolution	original projection	VDATUM	link	comment
Snohomish River Estuary	2009	PSLC		3 foot	State Plane North NAD83 HARN	NAVD1988	PSLC	This project is not incorporated into the 30-foot mosaic.
Lewis County	2003/2006?	PSLC		6 foot	State Plane South NAD83 HARN	NAVD1988	PSLC	This data landed on top because I overlooked it until the end.
Elwha	June, 2009	?	Entrix	6 foot	State Plane North NAD83 HARN	NAVD1988	(local)
Sauk	April, 2005	DNR/Skagit County	Terrapoint	6 foot	State Plane North NAD83	NAVD1988	report, local copy of data	The report describes the north half.
Greenwater/White	2007	WaDOT		3 foot	State Plane North NAD83	NAVD1988	all data filegeodatabase	not to be confused with DOT projects on SR401 in Yakima county.
Mount Rainier National Park	2009?	NPS		1 meter	UTM NAD83		filegeodatabase
Lewis County	2006	PSLC		3 foot	State Plane South NAD83	NAVD1988	tiles filegeodatabase
San Juan Islands	2008?	PSLC		3 foot	State Plane North NAD83	NAVD1988	tiles filegeodatabase	with Lummi Island and Pt. Roberts
Skagit River/Bacon Creek	2005	PSLC		6 foot	State Plane North NAD83	NAVD1988	tiles filegeodatabase	Sauk to Marblemount, plus lower Bacon Creek
bits near Skagit delta	2005	Skagit Environmental Bank		6 foot	State Plane North NAD83	NAVD1988	filegeodatabase
Clallam	2005	PSLC		6 foot	State Plane North NAD83	NAVD1988	filegeodatabase
Puget Sound Lowlands	2000-2005	PSLC		6 foot	State Plane North NAD83	NAVD1988	tiles	These PSLC tiles are not broken down by project/year.
Snohomish County	2005-6	Sno County		6 foot	State Plane North NAD83	NAVD1988	filegeodatabase and tiles
Darrington	2003?	NASA/USGS	terrapoint	6 foot	State Plane North NAD83	NAVD1988	filegeodatabase NASA	North Fork Stillaguamish
Whatcom/Skagit	2006	USGS	Sanborn	6 foot	State Plane North NAD83	NAVD1988	filegeodatabase tiles, LAS, metadata	aka North Puget Sound
West of Rainier	2006	NASA/USGS	terrapoint	6 foot	State Plane North NAD83	NAVD1988	filegeodatabase and links
Snohomish floodplain	2005	PSLC		6 foot	State Plane North NAD83	NAVD1988	filegeodatabase
Skykomish		Sno County		6 foot	State Plane North NAD83	NAVD1988	e00	Overlaps Snoqualmie survey, extending higher
Snoqualmie		Sno County		6 foot	State Plane North NAD83	NAVD1988	e00	to King County line

Notes:

These note are under construction.
There are issues in mosaicking multiple projects.
More of Lewis County is on the six-foot version.
We are grateful that we can now redistribute King County data.
The King County dataset includes non-LiDAR bathymetry.
We may issue a revised version of the King County dataset.
This dataset is in State Plane North, NAD83 with HARN adjustments.
As this projection covers the width of the state, you see that grid north leans west of true north.
The vertical datum is North American Vertical Datum of 1988
We need to doublecheck the vertical datum of all components.
Blue-green LiDAR is not yet included.
Anybody have more LiDAR DEMs for this area to share?
All comments and suggestions are welcome.
This is the bare earth DEM. We may not get around to a first-return DEM, partly because we lack first return data for all components.
When we are happy with this, we will work with Oceanography to update the Puget Sound topography/bathymetry composite

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If you have difficulty loading the data files into your software, cannot easily transfer large files via the Internet, or would like advice on the uses and limitations of these data, please refer our frequently asked questions. If you can't find what you need here contact us.

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Puget Sound Lidar Supermosiac

The first-draft 30-foot 2010 supermosaic!

Technical Assistance

This page maintained by PSLC webmaster

This page maintained by PSLC webmaster