<descriptor thcode="3"><thesaurus thcode="3" name="Alexandria Digital Library Feature Type Thesaurus" scope="Types of named geographic features.  Applicable also to many unnamed features but reflects the level of detail traditionally shown on maps, so some feature types specified in scientific studies may not be well represented here.  Not highly specific." creator="Alexandria Digital Library Project, University of California at Santa Barbara" rights="Copyright (c) 1999-2004 by the Regents of the University of California. All rights reserved.\r\n\r\nRedistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:\r\n\r\n   1. Redistributions of source code or dataset must retain the above copyright notice, this list of conditions and the following disclaimer.\r\n   2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.\r\n   3. Neither the name of the University of California, Santa Barbara nor the names of its contributors may be used to endorse or promote products derived from this software or dataset without specific prior written permission.\r\n\r\nTHIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS &quot;AS IS&quot; AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE OR DATASET, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\r\n\r\n[This statement is derived from the BSD license template, http://www.opensource.org/licenses/bsd-license.php]" edition="2.0" date="2002-07-03" codetype="number" prefix="feature" uri="http://www.usgs.gov/science/ADLFeatureType" tblname="feature" nonpref="featnp" relterm="featrt" root_code="1" contact="pschweitzer"><category><term thcode="25" code="13" name="transitive" parent="12" scope="Narrower terms have an &quot;is a&quot; relationship with their broader terms, and generally can be described as part-of, type-of, or instance-of the broader term."/><term thcode="25" code="5" name="theme" parent="2" scope="Terms indicate domains of human concern, such as scientific discipline, societal problems, or characteristics of earth, space, oceans, and living things."/><term thcode="25" code="16" name="hierarchical" parent="11" scope="Substantive broader-narrower relationships exist among the terms."/><term thcode="25" code="29" name="distinct labels" parent="26" scope="Preferred labels (descriptor texts) are distinct within the thesaurus. A concept can be specified either by its unique identifier (code) or by the text of its descriptor."/><term thcode="25" code="13" name="transitive" parent="12" scope="Narrower terms have an &quot;is a&quot; relationship with their broader terms, and generally can be described as part-of, type-of, or instance-of the broader term."/><term thcode="25" code="5" name="theme" parent="2" scope="Terms indicate domains of human concern, such as scientific discipline, societal problems, or characteristics of earth, space, oceans, and living things."/><term thcode="25" code="16" name="hierarchical" parent="11" scope="Substantive broader-narrower relationships exist among the terms."/><term thcode="25" code="29" name="distinct labels" parent="26" scope="Preferred labels (descriptor texts) are distinct within the thesaurus. A concept can be specified either by its unique identifier (code) or by the text of its descriptor."/></category><altlabel><altlabel>ADLFTT</altlabel><altlabel>ADLFTT</altlabel><altlabel>ADLFeatureType</altlabel><altlabel>ADLFeatureType</altlabel></altlabel></thesaurus><term thcode="3" code="1174" name="transportation features" parent="643"/><uf><usefor name="air routes"/><usefor name="caravan routes"/><usefor name="corridors"/><usefor name="crossings"/><usefor name="depots"/><usefor name="ferries"/><usefor name="fords (crossings)"/><usefor name="fuel depots"/><usefor name="gates (manmade)"/><usefor name="halting places (transportation)"/><usefor name="highway maintenance sites"/><usefor name="portages"/><usefor name="resthouses"/><usefor name="routes"/><usefor name="ship tracks"/><usefor name="stock routes"/><usefor name="terminals (transportation)"/><usefor name="transit facilities"/></uf><bt><term thcode="3" code="643" name="manmade features" parent="1"/><term thcode="3" code="1" name="Categories"/></bt><nt><term thcode="3" code="25" name="airport features" parent="1174" scope="Manmade facilities maintained for the use of aircraft. [USGS GNIS Feature Class Definitions &lt;http://geonames.usgs.gov/domestic/feature_class.htm&gt;]"/><term thcode="3" code="47" name="aqueducts" parent="1174" scope="Structures designed to transport water from a remote source, usually by gravity. [USGS Circ 1048]"/><term thcode="3" code="140" name="bridges" parent="1174" scope="Structures erected over a depression or obstacle to carry traffic. [USGS Circ 1048]"/><term thcode="3" code="152" name="cableways" parent="1174" scope="Conveyor systems in which carrier units run on wire cables strung between supports. [USGS Circ 1048]"/><term thcode="3" code="630" name="locks" parent="1174" scope="Stretches of water in canals, streams, or docks, enclosed by gates at each end, and used in raising and lowering boats as they pass from one water level to another. [Glossary of Geology, 4th ed.]"/><term thcode="3" code="793" name="parking sites" parent="1174" scope="Designated areas where motor vehicles are left temporarily. [USGS Circ 1048]"/><term thcode="3" code="822" name="pipelines" parent="1174" scope="Tubular conduits of substantial length, with pumps, valves, and control devices, for conveying fluids, gases, or finely divided solids. [USGS Circ 1048]"/><term thcode="3" code="897" name="railroad features" parent="1174"/><term thcode="3" code="968" name="roadways" parent="1174" scope="Open ways for passage of vehicles. [USGS Circ 1048]"/><term thcode="3" code="1169" name="trails" parent="1174" scope="Cleared paths, beaten tracks, or improved surfaces, as through woods or wilderness, not usually trafficked by vehicles because of width, seasonal conditions, or access restrictions. [USGS Circ 1048]"/><term thcode="3" code="1185" name="tunnels" parent="1174" scope="Underground or underwater passages. [USGS Circ 1048]"/></nt><rt><term thcode="3" code="164" name="canals" parent="526" scope="Artificial waterways with no flow or a controlled flow used for navigation (canal), or for draining or irrigating land (ditch). [USGS Circ 1048]"/><term thcode="3" code="485" name="harbors" parent="526" scope="Sheltered areas of water where ships or other watercraft can anchor or dock. [USGS Feature Class Definitions &lt;http://geonames.usgs.gov/domestic/feature_class.htm&gt;]"/><term thcode="3" code="526" name="hydrographic structures" parent="643" scope="For constructed bodies of water. For natural water bodies, use 'hydrographic features'."/></rt></descriptor>