<descriptor thcode="1"><thesaurus thcode="1" name="Common geographic areas" scope="Names and identifiers of commonly-known geographic areas including oceans, continents, countries, states and provinces in North America, counties in the United States, USGS map quadrangles, and hydrologic units, nested and cross-referenced by overlap." creator="U.S. Geological Survey" rights="Public domain" edition="1.0" date="2002-03-21" codetype="alpha" prefix="geo" uri="http://www.usgs.gov/science/CommonGeographicAreas" tblname="geo" nonpref="geonp" relterm="geort" root_code="root" 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="30" name="ambiguous labels" parent="26" scope="A given preferred label may be used for more than one concept in the thesaurus. A concept must be specified using its unique identifier (code). This may occur in the names of places or people."/><term thcode="25" code="4" name="place" parent="2" scope="Terms indicate extent in space, typically by reference as the names of geographic areas known from information that is stored elsewhere."/><term thcode="25" code="16" name="hierarchical" parent="11" scope="Substantive broader-narrower relationships exist among the terms."/><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="30" name="ambiguous labels" parent="26" scope="A given preferred label may be used for more than one concept in the thesaurus. A concept must be specified using its unique identifier (code). This may occur in the names of places or people."/><term thcode="25" code="4" name="place" parent="2" scope="Terms indicate extent in space, typically by reference as the names of geographic areas known from information that is stored elsewhere."/><term thcode="25" code="16" name="hierarchical" parent="11" scope="Substantive broader-narrower relationships exist among the terms."/></category><altlabel><altlabel>Augmented FIPS 10-4 and FIPS 6-4</altlabel><altlabel>Augmented FIPS 10-4 and FIPS 6-4</altlabel><altlabel>CommonGeographicAreas</altlabel><altlabel>CommonGeographicAreas</altlabel></altlabel></thesaurus><term thcode="1" code="h02070009" name="Monocacy" parent="h020700" scope="hydrologic unit"/><bt><term thcode="1" code="h020700" name="Potomac" parent="h0207" scope="hydrologic accounting unit"/><term thcode="1" code="h0207" name="Potomac" parent="h02" scope="hydrologic subregion"/><term thcode="1" code="h02" name="Mid Atlantic" parent="hroot" scope="hydrologic region"/><term thcode="1" code="hroot" name="US hydrologic units" parent="fUS" scope="hydrologic subregion"/><term thcode="1" code="fUS" name="United States" parent="fLD10" scope="country"/><term thcode="1" code="fLD10" name="North America" parent="fLD" scope="continent"/><term thcode="1" code="fLD" name="Land" parent="root" scope="continent"/><term thcode="1" code="root" name="Earth" scope="Common geographic areas focused on the US"/></bt><rt><term thcode="1" code="f42001" name="Adams" parent="fUS42" scope="county"/><term thcode="1" code="q40078NWF1" name="Arendtsville" parent="q40078NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q40078NWG1" name="Biglerville" parent="q40078NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q40078NWE3" name="Blue Ridge Summit" parent="q40078NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q40078SWE2" name="Buckeystown" parent="q40078SW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q40078NWE1" name="Caledonia Park" parent="q40078NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="f24013" name="Carroll" parent="fUS24" scope="county"/><term thcode="1" code="q40078NWE4" name="Catoctin Furnace" parent="q40078NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="p1125" name="Catoctin Mountain Park" parent="p56" scope="National Capital Park"/><term thcode="1" code="p1324" name="Chesapeake and Ohio Canal National Historical Park" parent="p39" scope="National Historic Park"/><term thcode="1" code="q40078SWG2" name="Damascus" parent="q40078SW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="p1345" name="Eisenhower National Historic Site" parent="p43" scope="National Historic Site"/><term thcode="1" code="q40078NWF3" name="Emmitsburg" parent="q40078NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q40078NWF2" name="Fairfield" parent="q40078NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="p557" name="Fort Ritchie Military Reservation (Closed)" parent="p23" scope="Army"/><term thcode="1" code="p558" name="Fort Ritchie Raven Rock Site" parent="p23" scope="Army"/><term thcode="1" code="f42055" name="Franklin" parent="fUS42" scope="county"/><term thcode="1" code="f24021" name="Frederick" parent="fUS24" scope="county"/><term thcode="1" code="q40078SWE1" name="Frederick" parent="q40078SW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q40078SWG3" name="Gaithersburg" parent="q40078SW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q40078SWF3" name="Germantown" parent="q40078SW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q40078NWG2" name="Gettysburg" parent="q40078NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="p1375" name="Gettysburg National Military Park" parent="p47" scope="National Military Park"/><term thcode="1" code="q40078NWE2" name="Iron Springs" parent="q40078NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q40078SWG1" name="Libertytown" parent="q40078SW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q40078NWH3" name="Littlestown" parent="q40078NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q40078NEA3" name="Manchester" parent="q40078NE" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q40078NWH2" name="Mcsherrystown" parent="q40078NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q40078SWD1" name="Middletown" parent="q40078SW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="f24031" name="Montgomery" parent="fUS24" scope="county"/><term thcode="1" code="q40078NWD4" name="Myersville" parent="q40078NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q40078NWH4" name="New Windsor" parent="q40078NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q40078SWD2" name="Point of Rocks" parent="q40078SW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q40078SWE3" name="Poolesville" parent="q40078SW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q40078NWD3" name="Smithsburg" parent="q40078NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q40078NWG3" name="Taneytown" parent="q40078NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="p627" name="U.S. Garrison, Fort Detrick" parent="p23" scope="Army"/><term thcode="1" code="q40078NWG4" name="Union Bridge" parent="q40078NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q40078SWF2" name="Urbana" parent="q40078SW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q40078SWF1" name="Walkersville" parent="q40078SW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="f24043" name="Washington" parent="fUS24" scope="county"/><term thcode="1" code="q40078NEA4" name="Westminister" parent="q40078NE" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q40078SWH1" name="Winfield" parent="q40078SW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q40078NWF4" name="Woodsboro" parent="q40078NW" scope="quadrangle 1:24,000 scale"/></rt></descriptor>