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Frame 1: Estuary

South Plain
Estuary Section

M, L, XL Sites

W 28th St to 405 Freeway (RM 3.7)
Willow Street (RM 2.9)
Middle Long Beach (RM 1.7)
South of Willow Street (RM 1.6)
Long Beach Municipal Urban Stormwater Treatment (RM 0.9)
Drake Chavez Park (RM 0.8)
Shoemaker Bridge Replacement (RM 0.7)
Cesar Chavez Park Connector (RM 0.6)

XS, S Sites

Spring St & De Forest Ave (RM 3.36)
De Forest / 26th (RM 2.99)
25th St & De Forest Ave (RM 2.72) 1 Lower LA River Revitalization Plan
De Forest / 25th (RM 2.67)
Burnett St & De Forest Ave (RM 2.59) 2 Lower LA River Revitalization Plan
23rd St & De Forest Ave (RM 2.5) 3 Lower LA River Revitalization Plan
Hill St West (RM 2.36) 4 Lower LA River Revitalization Plan
Hill St East (RM 2.34) 5 Lower LA River Revitalization Plan
21st St & De Forest Ave (RM 2.23) 6 Lower LA River Revitalization Plan
20th St & Long Beach Fwy (RM 2.12) 7 Lower LA River Revitalization Plan
19th St & De Forest Ave (RM 1.98) 8 Lower LA River Revitalization Plan
19th Street (RM 1.98)
De Forest (RM 1.12)
5th St & Long Beach Fwy (RM 0.67)
South of Golden Shore RV Resort (RM 0.13)

Location

Long Beach

River Miles

0.0 – 4.0

Channel Width

400 ft.

Channel Slope

0.1%

More about the Estuary frame

Channel Characteristics

The channel in this frame is a leveed trapezoidal concrete cross section with a width of approximately 400 feet. The soft channel bottom with year-round water transitions at river mile 3 to a concrete bottom section with hard rip-rap sides, with a typical width of 585 feet.

Landside Right-of-Way Characteristics

This frame contains east and west facing parcels along levee, with areas that vary from approximately 15 feet to 100-150 feet wide.

Notable Features

  • Estuary (including projections for sea level rise)
  • Important bird habitat area
  • Brackish water year round
  • Present transition from river channel to soft bottom estuary at Willow Street
  • Wrigley Greenbelt from river mile 2.9 to 4.0 along the left bank
  • Santa Cruz Park, Golden Park, and Cesar Chavez Park from river mile 0.3 to 0.8 along the left bank, bisected from the river by West Shoreline Drive.
  • Shoreline Aquatic Park and the Queen Mary at river mile 0

Significant Considerations

  • This frame is in closest proximity to the ocean and Port of Long Beach, with unique site conditions for projects along the LA River.
  • Projects here are potentially subject to high amounts of salt spray and salt content in the water and soil. Material and plant selections should be able to tolerate these conditions.
  • Raised banks along the channel bottom allow for planting and should be managed as to not encourage the spread of invasive species.
  • The wide ROW parcels, year-round presence of water, and proximity to the ocean provides opportunities for the creation and enhancement of valuable coastal habitat such as wetlands and nesting grounds.
  • Sea level rise may occur in coming decades in this frame.
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