Arroyo Calabasas (also known as Calabasas Creek) is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data
The National Map
, accessed March 16, 2011

tributary A tributary, or affluent, is a stream or river that flows into a larger stream or main stem (or parent) river or a lake. A tributary does not flow directly into a sea or ocean. Tributaries and the main stem river drain the surrounding drainage ...

of the

Los Angeles River , name_etymology = , image = File:Los Angeles River from Fletcher Drive Bridge 2019.jpg , image_caption = L.A. River from Fletcher Drive Bridge , image_size = 300 , map = LARmap.jpg , map_size ...

, in the southwestern

San Fernando Valley The San Fernando Valley, known locally as the Valley, is an urbanized valley in Los Angeles County, California. Located to the north of the Los Angeles Basin, it contains a large portion of the City of Los Angeles, as well as unincorporated ar ...

area of

Los Angeles County Los Angeles County, officially the County of Los Angeles, and sometimes abbreviated as L.A. County, is the most populous county in the United States and in the U.S. state of California, with 9,861,224 residents estimated as of 2022. It is the ...

California California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ...

Route

Origin of the Los Angeles River in Canoga Park

The stream begins with the merging of: Dry Canyon Creek from a

Santa Monica Mountains The Santa Monica Mountains is a coastal mountain range in Southern California, next to the Pacific Ocean. It is part of the Transverse Ranges. Because of its proximity to densely populated regions, it is one of the most visited natural areas in ...

watershed Watershed is a hydrological term, which has been adopted in other fields in a more or less figurative sense. It may refer to: Hydrology * Drainage divide, the line that separates neighbouring drainage basins * Drainage basin, called a "watershe ...

and McCoy Canyon Creek from a

Simi Hills The Simi Hills are a low rocky mountain range of the Transverse Ranges in eastern Ventura County and western Los Angeles County, of southern California, United States. Geography The Simi Hills are aligned east-west and run for , and average arou ...

(

Hidden Hills ''Hidden Hills'' is an American sitcom television series that aired on NBC from September 24, 2002 to January 21, 2003, during the 2002 fall line up. Based on the book ''Surviving Suburbia'', the series was created by Peter Segal and Ric Swart ...

and

Upper Las Virgenes Canyon Open Space Preserve The Upper Las Virgenes Canyon Open Space Preserve is a large Open space reserve, open space Nature reserve, nature preserve owned and operated by the Santa Monica Mountains Conservancy spanning nearly in the Simi Hills of western Los Angeles Cou ...

) watershed, near the

Leonis Adobe The Leonis Adobe, built in 1844, is one of the oldest surviving private residences in Los Angeles County and one of the oldest surviving buildings in the San Fernando Valley. Located in what is now Calabasas, California, the adobe was occupied ...

in the town of Calabasas. Arroyo Calabasas flows northeast through Woodland Hills and

Canoga Park Canoga Park is a neighborhood in the San Fernando Valley region of the City of Los Angeles, California. Before the Mexican–American War, the district was part of a rancho, and after the American victory it was converted into wheat farms and t ...

. In Canoga Park it joins Bell Creek, directly east of

Canoga Park High School Canoga Park High School is a high school located in Canoga Park in the western San Fernando Valley region of the City of Los Angeles, California, United States. It is in the Los Angeles Unified School District. It is located at the start of the L ...

beside Vanowen Avenue. The

confluence In geography, a confluence (also: ''conflux'') occurs where two or more flowing bodies of water join to form a single channel. A confluence can occur in several configurations: at the point where a tributary joins a larger river (main stem); o ...

marks the ''"headwaters"'' of the

, . The flow of Arroyo Calabasas is entirely encased in a

concrete Concrete is a composite material composed of fine and coarse aggregate bonded together with a fluid cement (cement paste) that hardens (cures) over time. Concrete is the second-most-used substance in the world after water, and is the most wi ...

flood control channel Flood control channels are large and empty basins which let water flow in and out (except during flooding) or dry channels that run below the street levels of some larger cities, so that if and when a flood occurs, the water will run into these ch ...

Crossings

From mouth to source (year built in parentheses): *Vanowen Street (1964) *

Westfield Topanga Westfield Topanga & The Village is a shopping mall in the Canoga Park neighborhood of Los Angeles, California. It spans and houses anchor stores Neiman Marcus, Nordstrom, Macy's, and Target. History Opened on February 10, 1964, Topanga Plaza ...

Parking Lot (1964) *

California State Route 27 State Route 27, commonly known by its street name Topanga Canyon Boulevard (), is a state highway in the U.S. state of California that runs from the Pacific Coast Highway ( California State Route 1) at Topanga State Beach near Pacific Palisades ...

- North Topanga Canyon Boulevard (1962) *Kittridge Street edestrian Bridge* Victory Boulevard (1966) *Sylvan Street rivate Pedestrian Bridge*Shoup Avenue (1964) *Oxnard Street (1963) *Fallbrook Avenue (1961) *Burbank Boulevard (1968) *Woodlake Avenue (1968) *Mariano Street (1968) *Canzonet Street (1968) *Dry Canyon Creek enters from south *Valley Circle Boulevard (1962) *McCoy Canyon Creek enters from west

References

{{Southern California major watersheds Rivers of Los Angeles County, California Tributaries of the Los Angeles River Geography of the San Fernando Valley Geography of Los Angeles Santa Monica Mountains Calabasas, California Canoga Park, Los Angeles Woodland Hills, Los Angeles Rivers of Southern California

Route

Crossings

See also

References