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1. 1:1,000,000-Scale Coastline of the United States, 2014

2014. National Atlas of the United States. This line shapefile includes Global Map data showing the coastline of the United States, Puerto Rico, and the U.S. Virgin Islands. The United State... National Atlas of the United States.

2. 1:1,000,000-Scale National Wilderness Preservation System of the United States, 2014

2014. National Atlas of the United States. This polygon shapefile consists of National Wilderness Preservation System areas of 320 acres or more, in the United States, Puerto Rico, and the U... National Atlas of the United States.

3. 1:1,000,000-Scale Streams of the United States, 2014

2014. Geological Survey (U.S.). This map layer shows streams of the United States, Puerto Rico, and the U.S. Virgin Islands. The map layer was produced primarily from the Medium-R... Geological Survey (U.S.).

4. 1:1,000,000-Scale Waterbodies and Wetlands of the United States, 2014

2014. Geological Survey (U.S.). This polygon shapefile represents waterbodies and wetlands of the United States, Puerto Rico, and the U.S. Virgin Islands. The map layer was produc... Geological Survey (U.S.).

5. Abundance Estimates of the Pacific Salmon Conservation Assessment Database, 1978-2008

1978. Pinsky, Malin L., Springmeyer, Dane B., Goslin, Matthew N., and Augerot, Xanthippe. This dataset is a visualization of abundance estimates for six species of Pacific salmon (Oncorhynchus spp.): Chinook, Chum, Pink, Steelhead, Socke... Stanford Digital Repository.

6. Active and Dormant Landslides, Elk River Watershed, California, 1940-2000

1940. California Geological Survey, California. Department of Conservation, Marshall, Gerald, and Mendes, Eric. This polygon shapefile depicts active and dormant landslides within the Elk River watershed in Humboldt County, California. This layer does not inc... California Geological Survey.

7. Active and Dormant Landslides (Small), Elk River Watershed, California, 1940-2000

1940. California Geological Survey, California. Department of Conservation, Marshall, Gerald, and Mendes, Eric. This point shapefile depicts smaller active and dormant landslides within the Elk River watershed in Humboldt County, California. Features shown he... California Geological Survey.

8. Africa: River Network, 15s resolution, 2007

2007. World Wildlife Fund. This river network (stream lines) map for Africa is derived from the flow direction map for Africa. The flow accumulation map for Africa is used fo... Geological Survey (U.S.).

9. Africa: River Network, 30s resolution, 2007

2007. World Wildlife Fund. This river network (stream lines) map for Africa is derived from the flow direction map for Africa. The flow accumulation map for Africa is used fo... Geological Survey (U.S.).

10. Alluvial contacts (Units): Albion River Watershed, California, 2000

2000. California Geological Survey. This polygon shapefile depicts alluvial contacts in the Albion Watershed region of Mendocino County, California. Alluvail contacts are unconsolidat... California Geological Survey.