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    <titleInfo>
      <title>Topographic Contours, Elk River Watershed, California, 1940-2000</title>
    </titleInfo>
    <name type="corporate">
      <namePart>California Geological Survey</namePart>
      <role>
        <roleTerm authority="marcrelator" type="text">creator</roleTerm>
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      <namePart>California. Department of Conservation</namePart>
      <role>
        <roleTerm authority="marcrelator" type="text">creator</roleTerm>
      </role>
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    <name type="personal">
      <namePart>Marshall, Gerald</namePart>
      <role>
        <roleTerm authority="marcrelator" type="text">creator</roleTerm>
      </role>
    </name>
    <name type="personal">
      <namePart>Mendes, Eric</namePart>
      <role>
        <roleTerm authority="marcrelator" type="text">creator</roleTerm>
      </role>
    </name>
    <genre valueURI="http://id.loc.gov/authorities/genreForms/gf2011026297" authority="lcgft">Geospatial data</genre>
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    <abstract lang="eng" displayLabel="Abstract">This line shapefile depicts contains topographic contours of the Elk River watershed in Humboldt County, California. These countours were derived from a 7.5 minute topographic quadrangle map originally produced by the US Geological Survey. This dataset is the product of the Department of Conservation, California Geological Survey&#x2019;s (CGS) investigation of landslides in the Elk River watershed. The 52 square mile study area is located in Humboldt County in northwestern California. The investigation was based on interpretation of 1940, 1941, 1948, 1954, 1962, 1965, 1984, 1988, 1996 and 2000 aerial photos, findings from CGS&#x2019;s landslide mapping conducted in the early 1980s (Kilbourne, R.T. 1982-84, Manson, M. W. 1984), as well as other sources. Mapping was conducted at 1:24,000 scale. The resulting maps are titled &#x201C;Geologic and Geomorphic Features Related to Landsliding, Elk River Watershed&#x201D; (Plate 1) and &#x201C;Relative Landslide Potential with Geologic and Geomorphic Features, Elk River Watershed&#x201D; map (Plate 2). This study was conducted at a regional scale of mapping using ten sets of aerial photos combined with a compilation of earlier published and unpublished work. Other photo sets may reveal additional landslides. The regional nature of the study makes the data and maps, including the relative landslide potential zones, inappropriate as a substitute for site-specific analysis.</abstract>
    <abstract lang="eng" displayLabel="Purpose">CGS evaluated the geology, relative slope stability and geomorphic characteristics within the watershed, and compiled the digital geospatial data described in this document. This mapping and compilation is geared toward providing baseline geologic and geomorphic data to aid in responsible land management, as well as the development of watershed restoration projects, watershed management strategies, and watershed plans.</abstract>
    <note lang="eng" displayLabel="Attribute accuracy report">Initial checking of attributes was conducted by the geologists who mapped the features. Limited field assessment of attributes was completed. The 'confidence' attribute indicates the geologist's level of
certainty in a given feature (typically as viewed through a stereoscope). Peer reviewers and GIS staff conducted additional quality control. Because the attribute fields are designed to address various types of mapping products, and because some data is compiled from other sources, not all attribute fields are populated.</note>
    <note lang="eng" displayLabel="Preferred citation">Marshall, G., Mendes, E., California Geological Survey and California Dept. of Conservation. (2005). Topographic Contours, Elk River Watershed, California, 1940-2000 California Geological Survey. Available at: http://purl.stanford.edu/vv491fg9036.</note>
    <note displayLabel="WGS84 Cartographics">This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.</note>
    <subject authority="lcsh" lang="eng">
      <topic authority="lcsh" authorityURI="http://id.loc.gov/authorities/subjects.html">Watersheds</topic>
    </subject>
    <subject authority="lcsh" lang="eng">
      <topic authority="lcsh" authorityURI="http://id.loc.gov/authorities/subjects.html">Contours (Cartography)</topic>
    </subject>
    <subject lang="eng">
      <geographic>California, Northern</geographic>
    </subject>
    <subject lang="eng">
      <geographic>Humboldt County (Calif.)</geographic>
    </subject>
    <subject>
      <temporal encoding="w3cdtf">1940-2000</temporal>
    </subject>
    <subject authority="ISO19115TopicCategory">
      <topic authority="ISO19115TopicCategory" authorityURI="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#MD_TopicCategoryCode" valueURI="elevation">Elevation</topic>
    </subject>
    <subject authority="ISO19115TopicCategory">
      <topic authority="ISO19115TopicCategory" authorityURI="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#MD_TopicCategoryCode" valueURI="inlandWaters">Inland Waters</topic>
    </subject>
    <subject>
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        <scale>1:24000</scale>
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        <projection>Custom projection</projection>
        <coordinates>W 124&#xB0;13&#x2B9;15&#x2BA;--W 123&#xB0;58&#x2B9;21&#x2BA;/N 40&#xB0;46&#x2B9;24&#x2BA;--N 40&#xB0;37&#x2B9;2&#x2BA;</coordinates>
        <coordinates>W 124&#xB0;13&#x2B9;12&#x2BA;--W 123&#xB0;58&#x2B9;24&#x2BA;/N 40&#xB0;46&#x2B9;17&#x2BA;--N 40&#xB0;37&#x2B9;9&#x2BA;</coordinates>
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        <projection>EPSG::4326</projection>
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    </subject>
    <originInfo>
      <dateIssued encoding="w3cdtf" keyDate="yes">2005</dateIssued>
      <place>
        <placeTerm type="text">Sacramento, California, US</placeTerm>
      </place>
      <publisher>California Geological Survey</publisher>
      <edition>1</edition>
    </originInfo>
    <location>
      <url usage="primary display">https://purl.stanford.edu/vv491fg9036</url>
    </location>
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        <languageTerm authority="iso639-2b" type="code">eng</languageTerm>
      </languageOfCataloging>
      <recordContentSource>Stanford</recordContentSource>
      <recordOrigin>This record was translated from ISO 19139 to MODS v.3 using an xsl transformation.</recordOrigin>
      <recordIdentifier>edu.stanford.purl:vv491fg9036</recordIdentifier>
    </recordInfo>
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    <relatedItem type="host">
      <titleInfo>
        <title>Maps and GIS data for the Elk River watershed, Humboldt County, California : watershed mapping series, map set 4</title>
      </titleInfo>
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        <url>https://purl.stanford.edu/bn324wt5869</url>
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    <accessCondition type="useAndReproduction">This item is in the public domain.  There are no restrictions on use.</accessCondition>
    <accessCondition type="copyright">This work is in the Public Domain, meaning that it is not subject to copyright.</accessCondition>
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