In the post I delve into the latest news on sediment management for sea level rise in the San Francisco Bay Area, including the hot topic of BCDC's lawsuit against the U.S. Army Corps of Engineers (read the 2-page BCDC brief about the suit here, read the entire filing here), filed Sept. 22, 2016, by California's then-Attorney General Kamala Harris.
Here is the full list of SF Bay sediment/sea level rise-related pilot projects that appears in my WWF ClimatePrep article in truncated form:
A SF Bay Wetlands
Restoration Project Roll Call
There are many pilot projects involving sediment in various
stages of development in the SF Bay.
Bel Marin Keys/
Hamilton Airfield
This ACE/
California Coastal Conservancy project is celebrated as a successful
transformation of a military site into a wetland. Click here
to see a 1:38 video with images of the breaching of the levee, opening the
land to the SF Bay waters in 2014. This
project benefited from beneficially reused sediment.
Oro Loma Horizontal
Levee Project
This,
the first horizontal levee in the SF Bay, using vegetation on a slope to slow
waves rather than a vertical wall, was set to be fully operational in 2016. It
might be the first levee of its kind in the world. After more than four years
in the permitting process it took six months to build (per Nate Kauffman in Save the
Bay, 2016).
Cullinan Ranch
This
project in the North Bay, now near completion in the Napa River Delta, came
out of a movement to block fill and residential development on the former
wetlands. Read about its return to recreational use in “Into the Breach:
Paddlers and Ducks Return to Cullinan Ranch” (2016).
South Bay Salt Ponds
This is “the
largest tidal wetland restoration project on the West Coast.” It is fully
underway, and will convert 15,100 acres of commercial salt ponds at the south
end of SF Bay into mud flats and tidal marsh. It will rely mostly on natural
sedimentation processes rather than reused dredged material.
Montezuma Wetlands
Restoration Project (Suisun Marsh)
Now completed, this is an interesting project because it used
“slightly more chemically challenged” dredged material than what is usually
used in restoration projects: it is designed to safely make beneficial reuse of
material that otherwise would be dumped in the open ocean. Scroll to the bottom
of this
page for a brief description of this project by the SF Bay Regional Water
Quality Control Board. A
3-page description of the project written during its initial stages.
Living Shorelines
This
subtidal restoration demonstration project in San Rafael and Hayward was
begun in 2012, is ongoing and now expanding to a new location in Richmond,
California. It focuses on eelgrass and oyster habitat restoration.
Bothin Marsh
This project is intended to enhance Bothin Marsh for habitat
and sea level rise protection through beneficial reuse of dredge sediment from
Coyote Creek. Although Marin County has received a grant
to develop a feasibility assessment, it remains in
the conceptual design stage.
Sediment
self-distribution in the South Bay?
A 2014 study (Bever
et al.) showed through modeling that dredged material dumped south of the
southern-most bridge across the SF Bay (Dumbarton) could result in the
nourishment of “mudflats, marshes and breached salt ponds through natural
sediment redistribution.” Any actual experiments with this kind of dumping
would have to wait for BCDC to change its bay fill policy.
-
Update: WWF's ClimatePrep blog apparently went defunct in 2018 and may not be revived. I'm updating this blog's links to ClimatePrep to snapshots on Archive.org (where available). Some articles look OK there, some not so OK. For a readable version with images intact, see my ClimatePrep articles as reconstructed on this blog:
• Head in the Clouds: The Dream of Harvesting Water from Fog
June 08, 2017
• Story Maps: A Rising Star of Climate Change Communication
April 10, 2017
• The Sea Level Rise Solution that is as Charismatic as Mud
February 17, 2017
• The Internet of Water - October 31, 2016
• Sea Level Rise Seen with New Eyes: the OWLs of San Mateo
August 30, 2016
• California: The Rebeavering
May 22, 2015
• Government Folly in the Face of Climate Change
March 19, 2015
• In the Heat of the Moment
December 02, 2014
• California’s Adaptation Clarion Call
September 02, 2014
• Farmland in Flux
July 8, 2014
• Honest Conversations: Climate Change and Uncertainty
December 12, 2013
-
Update: WWF's ClimatePrep blog apparently went defunct in 2018 and may not be revived. I'm updating this blog's links to ClimatePrep to snapshots on Archive.org (where available). Some articles look OK there, some not so OK. For a readable version with images intact, see my ClimatePrep articles as reconstructed on this blog:
• Head in the Clouds: The Dream of Harvesting Water from Fog
June 08, 2017
• Story Maps: A Rising Star of Climate Change Communication
April 10, 2017
• The Sea Level Rise Solution that is as Charismatic as Mud
February 17, 2017
• The Internet of Water - October 31, 2016
• Sea Level Rise Seen with New Eyes: the OWLs of San Mateo
August 30, 2016
• California: The Rebeavering
May 22, 2015
• Government Folly in the Face of Climate Change
March 19, 2015
• In the Heat of the Moment
December 02, 2014
• California’s Adaptation Clarion Call
September 02, 2014
• Farmland in Flux
July 8, 2014
• Honest Conversations: Climate Change and Uncertainty
December 12, 2013