Tuesday, September 5, 2017

Matilija Dam news stories

Thanks to a $3.3 million grant from the California Department of Fish and Wildlife, the project will take a huge leap toward completion of the final design phase for removing the dam.

“What we’re seeing with dam removal is that a river will restore itself quicker than anyone predicted,” said Jenkin.
                                                                                                                   -  www.newsdeeply.com

The good news is coastal systems naturally recover quickly after a dam is removed.  But in order for recoveries like that to happen, old dams must be torn down and sediment must be dealt with. 
Matilija Dam would be a prime candidate. It provides no recreational value, no flood control and no water to the area. It has trapped 8 million cubic yards of sediment in its reservoir, and by 2020, it will be completely silted up.  It presents a major safety risk, and its owner, Ventura County, wants it gone. Patagonia, the outdoor gear maker, has thrown its considerable weight — and more than $275,000 — behind the removal effort. The river runs through the backyard of the company's headquarters.

...regarding "Managed Shoreline Retreat":

"The real aim is to give the beach room to adapt over the course of decades," he said. "In drought, we have a scarcity of sediment in the system and the beach naturally retreats. Then we have a flood cycle and the beach grows back again. Trying to hold that line interrupts the whole process."

And here's the latest on the Elwha dam removal project:

High Country News Sept 2017