Removing Matilija Dam:
- Why Remove Matilija Dam?
- Objectives
- Benefits from Removal
- Impacts: Habitat
- Impacts: Sediment
- Matilija Dam spilling
Final Design:
- Project Description
- Sediment Management
- Slurry Disposal
- Levees
- Bridges
- Robles Diversion modifications
- Arundo (giant reed) management
- Our Comments
Feasibility Study:
Early Progress:
Background Information:
About the Matilija Coalition:
Levee
Design
The Matilija Dam Project includes modification or construction of three levees downstream of the dam site. These are located at Meiners Oaks, Live Oak (Oak View) and Casitas Springs.
Issues:
- Impacts to recreation and
public access
- Combined with the proposed
levee the MODA site may induce flooding and subsequent urbanization of the adjacent
neighborhood
References: http://matilijadam.org/documents/VenturaLeveeDesigns-DRAFTV4.pdf
Meiners Oaks Levee
These figures
show the historical river channel migration since 1947 and location of tributary
inflows. The alignment of proposed
levee is shown in the figure on the left. Green lines represent existing flood control channels.
These
figures show the existing 100-year flooding threat, worst-case flooding with
dam removal, and intended flood mitigation with proposed levee (which is shown
for reference on each image.) Inflow from upland tributaries was not included
in this analysis. Ref: Hydrology, Hydraulics, and Sediment Studies for the Meiners Oaks
and Live Oak Levees - DRAFT Report (July 2007), http://matilijadam.org/
(see also Matilia Coalition Levee Comments 10-24-08.pdf)
Flooding analysis from
Feasibility Study