Open-File Report 01-266: Multibeam Bathymetry Data

Multibeam Bathymetry Data

This Open-File Report contains the bathymetry data from the 2001 multibeam surveys of the major deltas of Southern Puget Sound, Washington. The data are provided in two formats (ASCII XYZ and ArcInfo GRID) that can be used in a number of GIS and other software packages.

ASCII XYZ format

The data are available in ASCII XYZ (x-coordinate, y-coordinate, depth) format. Click on either the duw4m.zip, puy3m.zip, or nis3m.zip links below to download the data. The files are compressed with WinZip 7.0.

Disclaimer: Downloading files from the Internet can sometimes be problematic. Different web browsers and operating systems act differently. The instructions above may vary from system to system or may not work at all.

Duwamish Delta
duw4m.zip
value = depth: min = -179.795m , max = -1.750m
4-m spatial resolution
7Mb compressed, 40Mb uncompressed
FGDC metadata:
FAQ
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TEXT

Puyallup Delta
puy3m.zip
value = depth: min = -170.690m , max = -1.190m
3-m spatial resolution
21Mb compressed, 63Mb uncompressed
FGDC metadata:
FAQ
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TEXT

Nisqually Delta
nis3m.zip
value = depth: min = -130.741m , max = -0.003m
3-m spatial resolution
32Mb compressed, 97Mb uncompressed
FGDC metadata:
FAQ
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Projection Information
Projection: UTM
Zone: 10
Datum: WGS84
Units: meters

ArcInfo GRID format

The data are also available in ArcInfo GRID format that can be used directly in ArcInfo, ArcView, or any other GIS or remote sensing software package that supports ArcInfo GRID format. In ArcView, the GRID files will be most useful with the Spatial Analyst Extension.

Download GRIDS to desktop.

1. Click on either the dubath.tar, pubath.tar, or nibath.tar below to download the files to the desktop.

2. "Untar" the files. Since ArcInfo GRIDs are directories of files these directories have been tarred into a single file for downloading. The files can be "untarred" using WinZip in Windows or "tar xf" in UNIX.

3. The bathymetry GRID files (DUBATHG, PUBATHG, and NIBATHG) are contained within each respective folder.

Disclaimer: Downloading files from the internet can sometimes be problamatic. Different web browsers and operating systems act differently. The instructions above may vary from system to system or may not work at all.

Duwamish Delta
dubath.tar (7Mb)

FGDC Metadata
FAQ
HTML
TEXT

Puyallup Delta
pubath.tar (7Mb)

FGDC Metadata
FAQ
HTML
TEXT

Nisqually Delta
nibath.tar (16Mb)

FGDC Metadata
FAQ
HTML
TEXT

Projection Information
Projection: UTM
Zone: 10
Datum: WGS84
Units: meters

ArcView Project

The bathymetry data along with surrounding USGS 10-m DEM's are part of an ArcView Project available in this Open-File Report. The user must have ArcView installed on their computer.

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For more information, contact the PCMSC team.

Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

Suggested citation:

Gardner, James V., van den Ameele, E. J., Dartnell, Peter, 2001, Multibeam Mapping of the Major Deltas of Southern Puget Sound, Washington: U.S. Geological Survey Open-File Report 01-266, https://pubs.usgs.gov/of/2001/0266/.

U.S. Department of the Interior
SALLY JEWELL, Secretary

U.S. Geological Survey
Suzette M. Kimball, Acting Director