Aliso Creek
Origin	Oat Mountain
Mouth	Los Angeles River
Basin countries	United States
Length	10 mi (16 km)
Source elevation	1,400 ft (430 m)
Mouth elevation	600 ft (180 m)

For other uses see Aliso Creek (disambiguation).

Aliso Creek (also Aliso Canyon Wash or Aliso Wash) is a major tributary of the Los Angeles River in Los Angeles County, California, with a watershed of 21 square miles (54 km²).^[1] It is the first major tributary to enter the Los Angeles River downstream of the Bell Creek/Calabasas Creek merge.^[2] The stream runs about 10 miles (16 km) from Aliso Canyon below Oat Mountain to its confluence with the Los Angeles River. During its first mile, it is a free-flowing stream mostly contained within Aliso Canyon Park and Eddlestone Park. After it passes under State Route 118 (Ronald Reagan Freeway) it empties into a retention basin and from there on is encased in a concrete flood control channel, flowing due south. Upstream of Plummer St., it merges with the Wilbur Canyon Wash, and shortly downstream merges with Limekiln Wash, both on the right bank. West of the West Valley Park, Aliso Creek makes a 90-degree bend to the east and merges with the mainstem Los Angeles River.^[3]

[edit] Crossings and tributaries

From northern source to southern mouth (year built in parentheses):

Rinaldi Street California State Route 118 - Ronald Reagan Freeway (1980) Concrete flood channel opening San Fernando Mission Road Tribune Street Chatsworth Street Service bridges Devonshire Street Lemarsh Street Reseda Boulevard (1950) Lassen Street (1966) Yolanda Avenue (1963) Limekiln Canyon Wash enters Wilbur Avenue (1969) Plummer Street (1967)

Nordhoff Street (1969) Wilbur Canyon Wash enters Railroad: Union Pacific Coast Line Parthenia Street (1955) Chase Street [Pedestrian Bridge] Roscoe Boulevard (1955) Wilbur Avenue (1955) Strathern Street (1952) Arminta Street [Pedestrian Bridge] Saticoy Street (1954) Valerio Street [Pedestrian Bridge] Sherman Way (1954) Hart Street [Pedestrian Bridge] Vanowen Street (1954) Merges with the Los Angeles River

[edit] Notes