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Image: NASA Worldwind, USGS imagery map, Empire Tract, California

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Original image ‎(1,213 × 1,923 pixels, file size: 2.88 MB, MIME type: image/png)

Description: USGS aerial imagery of an island in the w:Sacramento-San Joaquin River Delta. Backgrounds for these highlight images are black at 85-90% opacity, outlines are 2-10px outside selection border, pure red at 15-25% opacity. Boundaries taken from USGS survey maps (1913 through 2018), reclamation district documents, and county files.
Title: NASA Worldwind, USGS imagery map, Empire Tract, California
Credit: NASA tool at worldwind.earth, USGS Topo Imagery map layer
Author: USGS, self
Permission: This image is in the public domain in the United States because it only contains materials that originally came from the United States Geological Survey, an agency of the United States Department of the Interior. For more information, see the official USGS copyright policy.
Usage Terms: Public domain
License: Public domain
Attribution Required?: No

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