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Topographic digital surface model (DSM) for Whiskeytown Lake and surrounding area, 2018-12-02


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Logan, J.B., Dartnell, P., East, A.E., and Ritchie, A.C., 2020, Bathymetry, topography and orthomosaic imagery for Whiskeytown Lake, northern California (ver. 2.0, July 2021): U.S. Geological Survey data release,


This portion of the data release presents a digital surface model (DSM) and hillshade of Whiskeytown Lake and the surrounding area derived from Structure from Motion (SfM) processing of aerial imagery acquired on 2018-12-02. Unlike a digital elevation model (DEM), the DSM represents the elevation of the highest object within the bounds of a cell. Vegetation, buildings and other objects have not been removed from the data. In addition, data artifacts resulting from noise and vegetation in the original imagery have not been removed. However, in unvegetated areas such as reservoir shorelines and deltas, the DSM is equivalent to a DEM because it represents the ground surface elevation. The raw imagery used to create this DSM was acquired [...]


Attached Files

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“Color shaded-relief digital surface model map from 2018-12-02”
thumbnail 1.88 MB image/png
“Digital Surface Model (DSM), 25cm resolution, 2018-12-02”
1 GB image/geotiff
““Hillshade of digital surface model (DSM), 25 cm resolution, 2018-12-02”
416.96 MB image/geotiff


This digital surface model (DSM) was created to help evaluate the initial post-fire conditions on the exposed margins of Whiskeytown Lake as well as the exposed, unvegetated portions of the surrounding watersheds. It is intended for use by scientists, managers, and the general public. The DSM can be used with geographic information systems (GIS) software for research purposes.

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