Arroyo Calabasas
Encyclopedia
Arroyo Calabasas is a 7 miles (11.3 km) tributary
of the Los Angeles River
, in the southwestern San Fernando Valley
area of Los Angeles County in California
.
watershed
and McCoy Canyon Creek from a Simi Hills
(Hidden Hills
and Upper Las Virgenes Canyon Open Space Preserve
) watershed, near the Leonis Adobe
in the town of Calabasas
.
Arroyo Calabasas flows northeast through Woodland Hills
and Canoga Park. In Canoga Park it joins Bell Creek
, directly east of Canoga Park High School
beside Vanowen Avenue. The confluence
marks the "headwaters" of the Los Angeles River
, 34.1952°N 118.601838°W.
The flow of Arroyo Calabasas is entirely encased in a concrete
flood control channel
.
Tributary
A tributary or affluent is a stream or river that flows into a main stem river or a lake. A tributary does not flow directly into a sea or ocean...
of the Los Angeles River
Los Angeles River
The Los Angeles River is a river that starts in the San Fernando Valley, in the Simi Hills and Santa Susana Mountains, and flows through Los Angeles County, California, from Canoga Park in the western end of the San Fernando Valley, nearly southeast to its mouth in Long Beach...
, in the southwestern San Fernando Valley
San Fernando Valley
The San Fernando Valley is an urbanized valley located in the Los Angeles metropolitan area of southern California, United States, defined by the dramatic mountains of the Transverse Ranges circling it...
area of Los Angeles County in California
California
California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...
.
Route
The stream begins with the merging of: Dry Canyon Creek from a Santa Monica MountainsSanta Monica Mountains
The Santa Monica Mountains are a Transverse Range in Southern California, along the coast of the Pacific Ocean in the United States.-Geography:...
watershed
Source (river or stream)
The source or headwaters of a river or stream is the place from which the water in the river or stream originates.-Definition:There is no universally agreed upon definition for determining a stream's source...
and McCoy Canyon Creek from a Simi Hills
Simi Hills
The Simi Hills are a low rocky mountain range of the Transverse Ranges, located in eastern Ventura County and western Los Angeles County, of southern California, United States.-Geography:...
(Hidden Hills
Hidden Hills, California
Hidden Hills is an incorporated city, and also a gated development in Los Angeles County, California, United States. The population was 1,856 at the 2010 census, down from 1,875 at the 2000 census.It is located in the westernmost San Fernando Valley...
and Upper Las Virgenes Canyon Open Space Preserve
Upper Las Virgenes Canyon Open Space Preserve
The Upper Las Virgenes Canyon Open Space Preserve is a large open space nature preserve owned and operated by the Santa Monica Mountains Conservancy spanning nearly in the Simi Hills of western Los Angeles County and eastern Ventura County....
) watershed, near the Leonis Adobe
Leonis Adobe
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 by the wealthy rancher, Miguel Leonis, until his death in...
in the town of Calabasas
Calabasas, California
Calabasas is an affluent city in Los Angeles County, California in the western United States. It is located in the hills in the southwestern San Fernando Valley and the Santa Monica Mountains between Woodland Hills, Agoura Hills, West Hills, and Malibu, California. As of the 2010 census, the city...
.
Arroyo Calabasas flows northeast through Woodland Hills
Woodland Hills, Los Angeles, California
Woodland Hills is a district in the city of Los Angeles, California.Woodland Hills is located in the southwestern area of the San Fernando Valley, east of Calabasas and west of Tarzana, with Warner Center in its northern section...
and Canoga Park. In Canoga Park it joins Bell Creek
Bell Creek (Southern California)
Bell Creek is a tributary of the Los Angeles River, in the Simi Hills of Ventura County and the San Fernando Valley of Los Angeles County and City, in Southern California.-Route:...
, directly east of Canoga Park High School
Canoga Park High School
Canoga Park High School is a public school located in Canoga Park in the western San Fernando Valley region of the City of Los Angeles, California, United States, and is in the Los Angeles Unified School District...
beside Vanowen Avenue. The confluence
Confluence
Confluence, in geography, describes the meeting of two or more bodies of water.Confluence may also refer to:* Confluence , a property of term rewriting systems...
marks the "headwaters" of the Los Angeles River
Los Angeles River
The Los Angeles River is a river that starts in the San Fernando Valley, in the Simi Hills and Santa Susana Mountains, and flows through Los Angeles County, California, from Canoga Park in the western end of the San Fernando Valley, nearly southeast to its mouth in Long Beach...
, 34.1952°N 118.601838°W.
The flow of Arroyo Calabasas is entirely encased in a concrete
Concrete
Concrete is a composite construction material, composed of cement and other cementitious materials such as fly ash and slag cement, aggregate , water and chemical admixtures.The word concrete comes from the Latin word...
flood control channel
Flood control channel
Flood control channels are a series of large and empty open-air channels that extend a ways below the street levels of some larger cities, so that if and when a flood occurs, the flood will run into the channels, and proceed to be drained to the proper body of water...
.
Crossings
From mouth to source (year built in parentheses):- Vanowen Street (1964)
- Westfield TopangaWestfield TopangaWestfield Topanga, formerly known as the Westfield Shoppingtown Topanga and more commonly known to locals as the Topanga Mall or Topanga Plaza, is a two-story shopping mall consisting of 230 tenants spread across three sections...
Parking Lot (1964) - California State Route 27California State Route 27State Route 27 is a state highway in the U.S. state of California that runs from Pacific Coast Highway at Topanga State Beach near Pacific Palisades, through Topanga Canyon including the community of Fernwood Pacific also known as Topanga, and continuing through Woodland Hills, Canoga Park, West...
- North Topanga Canyon Boulevard (1962) - Kittridge Street [Pedestrian Bridge]
- Victory BoulevardVictory Boulevard (Los Angeles)Victory Boulevard is a major east-west arterial road that runs traversing the entire length of the San Fernando Valley in Los Angeles County. Through much of the San Fernando Valley, Victory Boulevard divides the affluent communities at the southern end of the Valley , from the less affluent...
(1966) - Sylvan Street [Private 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
See also
- Source (river or stream)Source (river or stream)The source or headwaters of a river or stream is the place from which the water in the river or stream originates.-Definition:There is no universally agreed upon definition for determining a stream's source...
- aka: watershed and headwaters - ConfluenceConfluenceConfluence, in geography, describes the meeting of two or more bodies of water.Confluence may also refer to:* Confluence , a property of term rewriting systems...
- aka: "headwaters" - Drainage basinDrainage basinA drainage basin is an extent or an area of land where surface water from rain and melting snow or ice converges to a single point, usually the exit of the basin, where the waters join another waterbody, such as a river, lake, reservoir, estuary, wetland, sea, or ocean...
- aka: "watershed"