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2000. California Geological Survey. This line file depicts stream features as of the year 2000 within the Albion River watershed predominantly located on the coastal side of the Mendo... California Geological Survey.
2004. National Atlas of the United States. This point shapefile includes Holocene volcanoes, which are those thought to be active in the last 10,000 years, that are within an extended area o... National Atlas of the United States.