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Frame 9: West Valley

Mid Valley
West Valley Section

M, L, XL Sites

River Origin Park (RM 51)
Canoga Park High School (RM 50.9)
Canoga Park River Park (RM 50.6)
Pierce College Connector (RM 48.9)
LA River Valley Bikeway and Greenway (RM 47.8)
Southern Aliso Green Network (RM 47.5)
Aliso Creek Confluence Park / Reseda River Loop (RM 47.4)
Reseda Expansion (RM 46.8)
Caballero Creek Confluence Park (RM 46.5)
Sepulveda Basin (RM 44)

XS, S Sites

Project 2: Canoga Park High School Outdoor Classroom (RM 51) 1 Los Angeles River Revitalization Master Plan
Bassett St & Alabama Ave (RM 50.85)
Project 5: Canoga Park Regional Gateway (RM 50.78) 2 Los Angeles River Revitalization Master Plan
De Soto Ave South (RM 50.24) 3 Los Angeles River Revitalization Master Plan
Project 18: Acquisition of Property between Oso Avenue and Vanowen Street (RM 49.44) 4 Los Angeles River Revitalization Master Plan
Winnetka (RM 49.17)
Project 22: Acquisition of Property between Corbin Avenue and the River (RM 48.7) 5 Los Angeles River Revitalization Master Plan
Shirley Ave & Kittridge St (RM 48.41)
Project 24: Acquisition of Property at Tampa Avenue and the River (RM 48.1) 6 Los Angeles River Revitalization Master Plan
Project 23: Tampa Avenue and Victory Boulevard Enhanced Intersection (RM 48.09) 7 Los Angeles River Revitalization Master Plan
Vanalden (RM 47.86)
Vanalden Avenue Pocket Park (RM 47.85) 8 Los Angeles River Revitalization Master Plan
Aliso Connector (RM 47.5)
Project 32: Amigo Avenue Pocket Park (RM 47.22) 9 Los Angeles River Revitalization Master Plan
Project 37: Reseda Park River Park Buffer (RM 46.84) 10 Los Angeles River Revitalization Master Plan
Project 40: Reseda High School Outdoor Classroom (RM 46.7) 11 Los Angeles River Revitalization Master Plan
Project 43: Caballero Creek Non-Motorized Bridge (RM 46.56) 12 Los Angeles River Revitalization Master Plan
Zelzah Ave & Duncan St (RM 46.22)
Project 44: White Oak Avenue and Victory Boulevard Enhanced Intersection (RM 45.97) 13 Los Angeles River Revitalization Master Plan
White Oak Ave & LA River (RM 45.97)
Project 46: Encino Velodrome Wetlands Park (RM 45.59) 14 Los Angeles River Revitalization Master Plan
LA River Veteran Tribute Park (RM 45.58) 15 Los Angeles River Revitalization Master Plan
Project 48: Orange Line Bridge Non-Motorized Bridge (RM 45.45) 16 Los Angeles River Revitalization Master Plan
Project 51: Sepulveda Basin Regional Gateway (RM 45.05) 17 Los Angeles River Revitalization Master Plan
West of Balboa Blvd (RM 44.99)
Balboa & Encino Golf Course (RM 44.5)
Sepulveda Basin Boating (RM 44.17) 18 Los Angeles River Revitalization Master Plan
Project 53: Sepulveda Basin River Park Buffer (RM 44.11) 19 Los Angeles River Revitalization Master Plan
Project 57: Sepulveda Basin Non-Motorized Bridge (RM 43.85) 20 Los Angeles River Revitalization Master Plan
Project 54: Sepulveda Basin Wetlands (RM 43.61) 21 Los Angeles River Revitalization Master Plan
Burbank (RM 43.45)
Project 56: Hjelte to Dam Wetlands Park (RM 43.32) 22 Los Angeles River Revitalization Master Plan

Location

City of Los Angeles
Canoga Park
Encino
Lake Balboa
Reseda
Sepulveda Basin
Tarzana
West Hills
Winnetka
Woodland Hills

River Miles

43.1 – 51

Channel Width

180 ft.

Channel Slope

0.2%

More about the West Valley frame

Channel Characteristics

The channel in this frame begins (at river mile 43.1) as a soft bottom with riparian edges at Sepulveda Basin, and transitions to entrenched trapezoidal concrete channel at mile 45.5. with a typical width of 180 feet. At mile 51, the channel transitions to an entrenched concrete box channel with a typical width of approximately 60 feet.

Landside Right-of-Way Characteristics

In this frame, the landside right-of-way ranges from 20-30 feet with a few larger tracts in the western portion of Canoga Park that are closer to 40-50 feet in width. The eastern soft bottom portion of the river channel has no landside right-of-way in Sepulveda Basin for approximately two miles (about 25% of the frame).

Notable Features

  • Dense residential context
  • Bell Creek confluence at river mile 51 - also the location of Canoga Park High School
  • Browns Canyon Wash confluence at river mile 49.8
  • Aliso Canyon Wash confluence at river mile 47.3
  • Reseda Park from river mile 46.6 to 47.0 along the right bank
  • Sepulveda Basin Recreation Area and Wildlife Reserve from river mile 43.1 to 45.5; a significant ecological area

Significant Considerations

  • Mile 51 at the Bell Creek confluence marks the headwaters of the LA River, and projects nearby should consider the significance of this moment of the LA River.
  • Projects in this frame have the opportunity to enhance native habitat and connect to other important habitat area in the region, such as the Santa Monica Mountains.
  • Sepulveda Basin occurs in this frame, and as a soft-bottomed sediment basin approximately 2,000 acres large, it provides a tremendous opportunity for native habitat and biodiversity.
  • Generally surface water in the channel portions of this frame is insignificant, except during rain events.
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