<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="h08" name="Lower Mississippi" parent="hroot" scope="hydrologic region"/><bt><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><nt><term thcode="1" code="h0805" name="Boeuf-Tensas" parent="h08" scope="hydrologic subregion"/><term thcode="1" code="h0808" name="Louisiana Coastal" parent="h08" scope="hydrologic subregion"/><term thcode="1" code="h0809" name="Lower Mississippi" parent="h08" scope="hydrologic subregion"/><term thcode="1" code="h0806" name="Lower Mississippi - Big Black" parent="h08" scope="hydrologic subregion"/><term thcode="1" code="h0802" name="Lower Mississippi - St. Francis" parent="h08" scope="hydrologic subregion"/><term thcode="1" code="h0803" name="Lower Mississippi - Yazoo" parent="h08" scope="hydrologic subregion"/><term thcode="1" code="h0801" name="Lower Mississippi-Hatchie" parent="h08" scope="hydrologic subregion"/><term thcode="1" code="h0807" name="Lower Mississippi-Lake Maurepas" parent="h08" scope="hydrologic subregion"/><term thcode="1" code="h0804" name="Lower Red - Ouachita" parent="h08" scope="hydrologic subregion"/></nt><rt><term thcode="1" code="q32094" name="Alexandria" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q31092" name="Baton Rouge" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q36090" name="Blytheville" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q30090" name="Breton Sound" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q37090" name="Dyersburg" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q34094" name="El Dorado" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q34092" name="Greenwood" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q35092" name="Helena" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q33092" name="Jackson" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q31094" name="Lake Charles" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q35094" name="Little Rock" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q35096" name="Mcalester" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q36092" name="Memphis" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q33090" name="Meridian" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q31090" name="Mobile" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q32092" name="Natchez" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q30092" name="New Orleans" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q38090" name="Paducah" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q37092" name="Poplar Bluff" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q30094" name="Port Arthur" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q38092" name="Rolla" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q36094" name="Russellville" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q33094" name="Shreveport" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q35090" name="Tupelo" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="q34090" name="West Point" parent="qroot" scope="quadrangle 1:250,000 scale"/></rt></descriptor>