Los Angeles River

E75176

river urban waterway

The Los Angeles River is a largely channelized urban waterway running through Los Angeles County that has played a central role in the region’s history, development, and ongoing revitalization efforts.

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All labels observed (7)

Label	Occurrences
Los Angeles River canonical	43
Los Angeles River watershed	9
Los Angeles River corridor	2
Los Angeles River basin	1
Los Angeles River estuary	1
Los Angeles River watershed region	1
San Gabriel River mouth	1

How this entity was disambiguated

This entity first appeared as the object of triple T332405 — 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: Los Angeles River
Context triple: [El Pueblo de Nuestra Señora la Reina de los Ángeles, nearbyWatercourse, Los Angeles River]

A. Santa Cruz River
The Santa Cruz River is a significant river in southern Argentina that flows eastward from the Andes through the Patagonian steppe to the Atlantic Ocean.
B. Mojave River
The Mojave River is an intermittent river in the Mojave Desert of California that mostly flows underground and provides a crucial water source for the region’s arid ecosystems and communities.
C. Sacramento River
The Sacramento River is the longest river entirely within California, flowing through the northern part of the state and serving as a major source of water, transportation, and ecological habitat.
D. San Joaquin River
The San Joaquin River is a major river in central California that flows through the San Joaquin Valley and supports extensive agricultural, ecological, and water supply systems before joining the Sacramento–San Joaquin Delta.
E. Gila River
The Gila River is a major waterway in the southwestern United States that flows through New Mexico and Arizona before joining the Colorado River.
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: Los Angeles River
Target entity description: The Los Angeles River is a largely channelized urban waterway running through Los Angeles County that has played a central role in the region’s history, development, and ongoing revitalization efforts.

A. Santa Cruz River
The Santa Cruz River is a significant river in southern Argentina that flows eastward from the Andes through the Patagonian steppe to the Atlantic Ocean.
B. Mojave River
The Mojave River is an intermittent river in the Mojave Desert of California that mostly flows underground and provides a crucial water source for the region’s arid ecosystems and communities.
C. Sacramento River
The Sacramento River is the longest river entirely within California, flowing through the northern part of the state and serving as a major source of water, transportation, and ecological habitat.
D. San Joaquin River
The San Joaquin River is a major river in central California that flows through the San Joaquin Valley and supports extensive agricultural, ecological, and water supply systems before joining the Sacramento–San Joaquin Delta.
E. Gila River
The Gila River is a major waterway in the southwestern United States that flows through New Mexico and Arizona before joining the Colorado River.
F. None of above. chosen

Statements (77)

Predicate	Object
instanceOf	river ⓘ urban waterway ⓘ
basinSize	approximately 2,253 square kilometers ⓘ approximately 870 square miles ⓘ
channelizationPeriod	1930s ⓘ 1940s ⓘ
characteristic	ephemeral and seasonal flow historically ⓘ largely channelized in concrete ⓘ subject to flash flooding ⓘ
country	United States of America ⓘ surface form: United States
crossedBy	Fourth Street Bridge ⓘ Los Angeles River Viaducts ⓘ Seventh Street Bridge ⓘ Sixth Street Viaduct ⓘ numerous bridges ⓘ
drainageBasin	Los Angeles Basin ⓘ
environmentalIssue	habitat fragmentation ⓘ urban runoff pollution ⓘ water quality concerns ⓘ
feature	adjacent parks and greenways ⓘ bike paths along portions of its banks ⓘ some soft-bottom naturalized reaches ⓘ
flowsThrough	Burbank, California ⓘ surface form: Burbank Los Angeles ⓘ surface form: City of Los Angeles Compton, California, United States ⓘ surface form: Compton Downtown Los Angeles ⓘ Elysian Valley ⓘ Frogtown neighborhood ⓘ Glendale ⓘ Long Beach ⓘ Studio City ⓘ
governedBy	Los Angeles River Revitalization Master Plan ⓘ surface form: Los Angeles River Master Plan (LA County)
hasDesignation	navigable waterway in certain segments ⓘ
hasRestorationGoal	enhance flood management with green infrastructure ⓘ improve habitat connectivity ⓘ increase public access ⓘ
hasSection	Downtown Long Beach waterfront ⓘ surface form: Estuary at Long Beach Verdugo Wash ⓘ surface form: Glendale Narrows Sepulveda Basin ⓘ
hasTributary	Arroyo Seco ⓘ Burbank Western Channel ⓘ Compton Creek ⓘ Rio Hondo ⓘ Tujunga Wash ⓘ Verdugo Wash ⓘ
historicalRole	influenced location of Pueblo de Los Angeles ⓘ primary water source for early Los Angeles settlement ⓘ
inPopularCulture	featured in action film chase scenes ⓘ iconic symbol of Los Angeles infrastructure ⓘ
length	approximately 51 miles ⓘ approximately 82 kilometers ⓘ
locatedIn	California, United States ⓘ surface form: California Los Angeles County ⓘ
managedBy	Los Angeles County Flood Control District ⓘ U.S. Army Corps of Engineers ⓘ
mouthCity	Long Beach ⓘ surface form: Long Beach, California
mouthLocatedIn	Pacific Ocean ⓘ San Pedro Bay ⓘ
near	Downtown Los Angeles ⓘ surface form: Downtown Los Angeles Arts District Port of Long Beach ⓘ San Fernando Valley ⓘ
partOf	Los Angeles River self-linksurface differs ⓘ surface form: Los Angeles River watershed
region	Southern California ⓘ
sourceCity	Canoga Park, Los Angeles, California, United States ⓘ surface form: Canoga Park, Los Angeles
sourceLocatedIn	Santa Susana Mountains ⓘ Simi Hills ⓘ
subjectOf	Los Angeles River Ecosystem Restoration project ⓘ Los Angeles River Revitalization Master Plan ⓘ numerous environmental restoration efforts ⓘ
supports	migratory bird species ⓘ riparian habitat in natural-bottom sections ⓘ
underwent	major channelization after 1938 floods ⓘ
usedFor	cycling along river paths ⓘ filming location for movies and television ⓘ flood control ⓘ kayaking in certain reaches ⓘ recreation in designated segments ⓘ

How these facts were elicited

Referenced by (58)

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

El Pueblo de Nuestra Señora la Reina de los Ángeles → nearbyWatercourse → Los Angeles River ⓘ

San Pedro Bay → borderedBy → Los Angeles River ⓘ

this entity surface form: San Gabriel River mouth

Studio City, Los Angeles, California, United States → hasLandmark → Los Angeles River ⓘ

Tongva people → traditionalTerritoryIncludes → Los Angeles River ⓘ

Los Angeles Basin → drainedBy → Los Angeles River ⓘ

San Gabriel Mountains → drainageTo → Los Angeles River ⓘ

San Gabriel Mountains → partOfWatershed → Los Angeles River ⓘ

this entity surface form: Los Angeles River watershed

Interstate 710 → follows → Los Angeles River ⓘ

Los Angeles River → partOf → Los Angeles River self-linksurface differs ⓘ

this entity surface form: Los Angeles River watershed

Arroyo Seco → flowsInto → Los Angeles River ⓘ

Arroyo Seco → partOf → Los Angeles River ⓘ

this entity surface form: Los Angeles River watershed

Elysian Valley → borderedBy → Los Angeles River ⓘ

Santa Susana Mountains → drainage → Los Angeles River ⓘ

this entity surface form: Los Angeles River watershed

Atwater Village → borderedBy → Los Angeles River ⓘ

Los Angeles Zoo → near → Los Angeles River ⓘ

Tongva → traditionalTerritoryIncludes → Los Angeles River ⓘ

this entity surface form: Los Angeles River basin

Los Angeles, California, United States of America → hasRiver → Los Angeles River ⓘ

subject surface form: Los Angeles

San Fernando Valley → drainageBasinOf → Los Angeles River ⓘ

Rainbow Harbor → connectedTo → Los Angeles River ⓘ

this entity surface form: Los Angeles River estuary

Gabrielino → traditionalTerritoryIncludes → Los Angeles River ⓘ

Kizh Nation → culturallyAssociatedWith → Los Angeles River ⓘ

Puvungna → near → Los Angeles River ⓘ

South Gate → locatedNear → Los Angeles River ⓘ

Montebello → locatedNear → Los Angeles River ⓘ

subject surface form: Montebello, California

Battle of La Mesa → near → Los Angeles River ⓘ

Glendale Boulevard → crosses → Los Angeles River ⓘ

Glendale Boulevard → hasBridgeOver → Los Angeles River ⓘ

Maywood → locatedNear → Los Angeles River ⓘ

subject surface form: Maywood, California

Los Angeles River Ranger District → locatedIn → Los Angeles River ⓘ

this entity surface form: Los Angeles River watershed region

Los Angeles River Ranger District → primaryWatercourse → Los Angeles River ⓘ

Bell → locatedOnRiver → Los Angeles River ⓘ

subject surface form: Bell, California

Frogtown neighborhood → locatedOnWaterway → Los Angeles River ⓘ

subject surface form: Frogtown

Rio Hondo → tributaryOf → Los Angeles River ⓘ

Rio Hondo → mouthLocation → Los Angeles River ⓘ

Rio Hondo → partOf → Los Angeles River ⓘ

this entity surface form: Los Angeles River watershed

Verdugo Wash → tributaryOf → Los Angeles River ⓘ

Verdugo Wash → mouth → Los Angeles River ⓘ

Verdugo Wash → partOf → Los Angeles River ⓘ

this entity surface form: Los Angeles River watershed

Burbank Western Channel → tributaryOf → Los Angeles River ⓘ

Burbank Western Channel → flowsInto → Los Angeles River ⓘ

Burbank Western Channel → partOf → Los Angeles River ⓘ

this entity surface form: Los Angeles River watershed

Burbank Western Channel → hasHydrologicConnection → Los Angeles River ⓘ

Los Angeles River Viaducts → cross → Los Angeles River ⓘ

Los Angeles River Revitalization Master Plan → appliesTo → Los Angeles River ⓘ

Los Angeles River Revitalization Master Plan → focusesOn → Los Angeles River ⓘ

this entity surface form: Los Angeles River corridor

Los Angeles River Ecosystem Restoration project → locatedIn → Los Angeles River ⓘ

this entity surface form: Los Angeles River corridor

Los Angeles River Ecosystem Restoration project → focusesOn → Los Angeles River ⓘ

Greater Los Angeles hydrologic system → includes → Los Angeles River ⓘ

this entity surface form: Los Angeles River watershed

Sixth Street Viaduct → crosses → Los Angeles River ⓘ

All labels observed (7)

How this entity was disambiguated Show

Statements (77)

How these facts were elicited Show

Referenced by (58)

How this entity was disambiguated

How these facts were elicited