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Great Salt Lake Bathymetry

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Type: Resource
Storage: The size of this resource is 877.7 MB
Created: Oct 28, 2017 at 12:12 a.m.
Last updated: Dec 28, 2023 at 12:37 a.m.
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Content types: Geographic Raster Content 
Sharing Status: Public
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Digital Elevation Model for the Great Salt Lake, lake bed bathymetry. This is an integration of data from the National Elevation Dataset and multiple bathymetry datasets as described in the README.txt file.

Subject Keywords



Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
North Latitude
East Longitude
South Latitude
West Longitude



GSL Bathymetry
David Tarboton 11/6/15

gsldembiowest. Bathymetry grid obtained from Biowest.  This is with respect to NGVD29 vertical datum.
GSLDEM.tif  Elevation DEM Extended from the biowest DEM to include areas in the west desert that the lake may extend into at high elevation. This is also with respect to the NGVD29 vertical datum.  Zip file with contour source data from Glen Busch used by biowest in developing bathymetry.

The Biowest bathymetry DEM was created by mosaicing these multiple elevation datasets into one contiguous elevation dataset for the entire Great Salt Lake Area. In general, elevations above 4200 are derived from the 10-meter NED DEM downloaded from the AGRC in the summer of 2010. NED Heights were converted from their native NAVD 1988 elevations to NGVD prior to merging with the bathymetric DEM. Elevations at and below 4200' are derived from various bathymetric data. Both the North and South arm are from USGS (Baskin, 2005 & 2006). Farmington Bay is from Baskin (unpublished, 2009) and modified by BIO-WEST in 2010. Modifications include minor contour manipulation and the introduction of a 4200 contour at the south end of the bay. Bear River Bay was surveyed by Hansen & Associates in 2009 under a contract with BIO-WEST, Inc. Trapezoid area is from BIO-WEST survey in May 2011. DEMs were created from bathymetric contours by first creating TIN from the contours utilizing vertices as mass points. Mosaic to New Raster was used to merge bathymetric DEMs with the upland DEM. It was done such that bathymetric values would replace the upland values at and below 4200. Finally, another mosaic was performed to fill minor imperfections at the edges of adjoining DEM's to fill in the no data values of GSL DEM.  

Baskin, R. L., (2005), "Calculation of Area and Volume for the South Part of Great Salt Lake, Utah," Open-File Report 20051327, USGS, Salt Lake City,

Baskin, R. L., (2006), "Calculation of Area and Volume for the North Part of Great Salt Lake, Utah," Open-File Report 20061359, USGS, Salt Lake City,

The GSLDEM.tif file was created by 
(1) Obtaining a 10 m national elevation dataset (NED) DEM for this area.
(2)  Subtracting 0.97 m from this DEM to convert to NGVD29 vertical datum, for consistency with gsldembiowest.
(3) Mosaicing the two DEM's together giving priority to gsldembiowest.  This means that the NED DEM was only used to extend beyond the area covered by gsldembiowest.
(4) Clipping the resulting DEM to approximately 5 km beyond the 4225 ft contour.

Data Services

The following web services are available for data contained in this resource. Geospatial Feature and Raster data are made available via Open Geospatial Consortium Web Services. The provided links can be copied and pasted into GIS software to access these data. Multidimensional NetCDF data are made available via a THREDDS Data Server using remote data access protocols such as OPeNDAP. Other data services may be made available in the future to support additional data types.

Related Resources

The content of this resource references Baskin, R. L., (2005), "Calculation of Area and Volume for the South Part of Great Salt Lake, Utah," Open-File Report 2005–1327, USGS, Salt Lake City,
This resource is referenced by Tarboton, D. (2017). Great Salt Lake Area Volume Data, HydroShare,
The content of this resource references Baskin, R. L., (2006), "Calculation of Area and Volume for the North Part of Great Salt Lake, Utah," Open-File Report 2006–1359, USGS, Salt Lake City,
This resource belongs to the following collections:
Title Owners Sharing Status My Permission
Collection of Great Salt Lake Data David Tarboton  Public &  Shareable Open Access



People or Organizations that contributed technically, materially, financially, or provided general support for the creation of the resource's content but are not considered authors.

Name Organization Address Phone Author Identifiers
Glen Busch BIO-WEST 1063 West 1400 North Logan, Utah 84321-2291

How to Cite

Tarboton, D., M. Merck (2023). Great Salt Lake Bathymetry, HydroShare,

This resource is shared under the Creative Commons Attribution CC BY.


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