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Statement of Purpose


Removing Matilija Dam:

Final Design:

Feasibility Study:

Early Progress:

Background Information:

About the Matilija Coalition:

Contact us


Robles High Flow Sediment Bypass:


Description: The intent of the high flow bypass modification to the Robles Diversion Dam is to solve the problem of sediment accumulation.  The Feasibility Study included a proposed new radial gate structure that would open during high flow events to flush sediment downstream.  The figure below shows a variation on this from the Value Engineering Study on the ROBLES DIVERSION PROJECT Ventura River Basin, CA June 2007. Physical modeling was showcased in Denver on Feb 11, 2008.


Issues: Some concerns with this project component include providing for fish passage and adequate integration with the existing facility and the proposed levee. Successful design should achieve the project objectives, most importantly restored natural sediment transport and fish passage.


see also:



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Page last updated: Jan 2003