Mississippi River basin

E50492

drainage basin river basin watershed

The Mississippi River basin is the vast drainage area of the Mississippi River system, encompassing much of the central United States and parts of Canada and covering one of the largest river basins in the world.

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All labels observed (17)

Label	Occurrences
Mississippi River basin canonical	210
Mississippi River watershed	183
Mississippi River system	29
Mississippi River Basin	27
Mississippi River drainage basin	5
Mississippi River headwaters region	3
Mississippi River drainage	2
Mississippi River System	1
Mississippi River basin; Kingdom of France	1
Mississippi River drainage system	1
Mississippi drainage basin	1
Mississippi–Missouri river system	1
Missouri–Mississippi river system	1
Ohio–Mississippi river system	1
Upper Mississippi River basin	1
Upper Mississippi River drainage basin	1
Upper Mississippi River watershed	1

How this entity was disambiguated

This entity first appeared as the object of triple T396839 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Mississippi River basin
Context triple: [Great Plains, borders, Mississippi River basin]

A. Mississippi River valley
The Mississippi River valley is a vast, fertile lowland region in the central United States shaped by the Mississippi River, historically crucial for agriculture, trade, and settlement.
B. Upper Mississippi Valley
The Upper Mississippi Valley is a region along the upper course of the Mississippi River, encompassing parts of several Midwestern U.S. states and historically significant for trade, settlement, and military activity.
C. Mississippi River
The Mississippi River is one of the longest and most significant rivers in the United States, serving as a major waterway for transportation, commerce, and drainage across much of the central continent.
D. Great Lakes–St. Lawrence system
The Great Lakes–St. Lawrence system is a vast interconnected chain of freshwater lakes and the St. Lawrence River that forms one of the world’s largest inland waterways, linking the interior of North America to the Atlantic Ocean.
E. Tennessee Valley
The Tennessee Valley is a region in the southeastern United States centered around the Tennessee River, known for its historically rural economy, flood-prone landscape, and large-scale development through New Deal-era infrastructure and power projects.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Mississippi River basin
Target entity description: The Mississippi River basin is the vast drainage area of the Mississippi River system, encompassing much of the central United States and parts of Canada and covering one of the largest river basins in the world.

A. Mississippi River valley
The Mississippi River valley is a vast, fertile lowland region in the central United States shaped by the Mississippi River, historically crucial for agriculture, trade, and settlement.
B. Upper Mississippi Valley
The Upper Mississippi Valley is a region along the upper course of the Mississippi River, encompassing parts of several Midwestern U.S. states and historically significant for trade, settlement, and military activity.
C. Mississippi River
The Mississippi River is one of the longest and most significant rivers in the United States, serving as a major waterway for transportation, commerce, and drainage across much of the central continent.
D. Great Lakes–St. Lawrence system
The Great Lakes–St. Lawrence system is a vast interconnected chain of freshwater lakes and the St. Lawrence River that forms one of the world’s largest inland waterways, linking the interior of North America to the Atlantic Ocean.
E. Tennessee Valley
The Tennessee Valley is a region in the southeastern United States centered around the Tennessee River, known for its historically rural economy, flood-prone landscape, and large-scale development through New Deal-era infrastructure and power projects.
F. None of above. chosen

Statements (79)

Predicate	Object
instanceOf	drainage basin ⓘ river basin ⓘ watershed ⓘ
alsoKnownAs	Mississippi River watershed ⓘ linked to: Mississippi River basin Mississippi drainage basin ⓘ linked to: Mississippi River basin
area	about 1.2 million square miles ⓘ about 3.2 million square kilometers ⓘ
climate	varies from humid subtropical to semi-arid and continental ⓘ
contains	extensive agricultural lands ⓘ floodplains ⓘ major urban areas ⓘ wetlands ⓘ
country	Canada ⓘ United States ⓘ linked to: United States of America
crosses	multiple physiographic regions of North America ⓘ
drainagePercentageOfUS	about 41 percent ⓘ
drains	Mississippi River ⓘ
drainsInto	Gulf of Mexico ⓘ
drainsPortionOf	31 U.S. states ⓘ
environmentalIssue	flood risk ⓘ habitat loss ⓘ nutrient pollution ⓘ sediment loading ⓘ
governedBy	Mississippi River Commission ⓘ U.S. Army Corps of Engineers ⓘ
hasPart	Arkansas River basin ⓘ Atchafalaya River basin ⓘ linked to: Atchafalaya Basin Des Moines River basin ⓘ linked to: Des Moines River Illinois River basin ⓘ linked to: Illinois River Lower Mississippi River basin ⓘ Minnesota River basin ⓘ linked to: Minnesota River Missouri River basin ⓘ linked to: Missouri River Basin Ohio River basin ⓘ linked to: Ohio River Platte River basin ⓘ linked to: Platte River Red River of the South basin ⓘ linked to: Red River of the South Tennessee River basin ⓘ linked to: Tennessee River Upper Mississippi River basin ⓘ linked to: Upper Mississippi Valley Yazoo River basin ⓘ
hydrologicCodeSystem	United States Geological Survey hydrologic unit codes ⓘ
includesPartOf	Alabama ⓘ Alberta ⓘ Arkansas ⓘ Colorado ⓘ Georgia ⓘ linked to: Alabama Illinois ⓘ Indiana ⓘ Iowa ⓘ Kansas ⓘ Kentucky ⓘ Louisiana ⓘ Manitoba ⓘ Minnesota ⓘ Mississippi ⓘ Missouri ⓘ linked to: Missouri River Montana ⓘ Nebraska ⓘ New York ⓘ North Carolina ⓘ North Dakota ⓘ Ohio ⓘ Oklahoma ⓘ Pennsylvania ⓘ Saskatchewan ⓘ South Dakota ⓘ Tennessee ⓘ West Virginia ⓘ Wisconsin ⓘ Wyoming ⓘ
influences	hypoxic zone in the northern Gulf of Mexico ⓘ
locatedIn	Canada ⓘ North America ⓘ United States ⓘ linked to: United States of America
majorCityInBasin	Memphis ⓘ Minneapolis–Saint Paul ⓘ New Orleans ⓘ St. Louis ⓘ linked to: St. Louis, Missouri, United States
name	Mississippi River basin ⓘ
partOf	Mississippi River system ⓘ linked to: Mississippi River basin
rank	one of the largest river basins in the world ⓘ

How these facts were elicited

Referenced by (469)

Full triples — surface form annotated when it differs from this entity's canonical label.

Great Plains → borders → Mississippi River basin ⓘ

Upper Mississippi Valley → partOf → Mississippi River basin ⓘ

Chicago River → partOf → Mississippi River watershed ⓘ