Digital elevation models

Gridded elevation, geographically referenced to the surface of the earth, as digital data
This category is also used for DDMs, DEMs, DTMs, digital depth models, and digital terrain models.

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Shaded-relief and Color Shaded-relief maps of the Willamette Valley, Oregon

This digital dataset was compiled from newly released U.S. Geological Survey 10-meter digital elevation model (DEM) data, along with stream and transportation coverages previously published on the internet. This report consists of a digital representatio