News


Flood-control project in Baylands kicks off

 

Eighty years after the enactment of the federal Flood Control Act, a decades-in-the-making flood-protection effort on San Francisquito Creek is finally underway.

On Aug. 5, officials from the San Francisquito Creek Joint Powers Authority and numerous public officials gathered for a groundbreaking ceremony on top of a levee in East Palo Alto to celebrate getting the first phase of the project started.

The vantage point provided a sobering backdrop to the event: from atop the levee, one looked down at the nearby rooftops of East Palo Alto residents. In a 100-year flood event, all of those roofs could be under water, and residents might have little or no chance to escape, said members of the SFJPA, which is managing the project.

The $41.35 million project's first phase, the Bay to U.S. 101 segment, will protect 5,700 homes and businesses in East Palo Alto and parts of eastern Menlo Park and Palo Alto from a high-water flow that includes an extreme tide with more than 2 feet of sea-level rise, a so-called 100-year event, SFJPA Executive Director Len Materman said.

The project includes new flood walls near private property constraining the channel, widening the creek by building a new levee through the Palo Alto Municipal Golf Course, rebuilding the existing levee adjacent to East Palo Alto homes, and excavating decades of sediment that has built up in the channel.

Most of the work will take place from June through January 2017 to protect endangered species living in the area. The work is scheduled to be completed in 2018.

The project is the first of two. The second project, the "Upstream of Highway 101" segment, would follow, with potential bridge replacements, channel widening and construction of an upstream floodwater detention basin, underground bypass or flood walls. A draft environmental impact report for this phase is scheduled for release and public comment in 2017.

San Francisquito Creek's potential to cause damaging and life-taking floods has been recognized since 1941, when Congress authorized the Army Corps of Engineers to study the creek, said Paul Beck, legislative counsel for U.S. Congresswoman Anna Eshoo, D-Menlo Park.

But in the intervening decades, little had been done to fix the situation, which only became more dangerous after decades of altering the channel and the addition of thousands of residents.

Flood control became an imperative for local governments following the 1998 flood that damaged parts of Palo Alto, East Palo Alto and Menlo Park. In 1998, local officials, including those from Menlo Park, formed the Joint Powers Authority (JPA) to work collaboratively on a solution to the flooding – one that would not improve the situation for one community while worsening it for another.

Palo Alto Mayor Pat Burt said that the project finally came to fruition after the JPA began to recalibrate its approach eight years ago. From 1998 to 2006, the approach was primarily pursuing principal funding sources.

But a project with the U.S. Army Corps of Engineers stalled, and when funding fell through, JPA members and state and local officials worked to secure local financial resources to take on the first phase of the flood-control project, the Bay to U.S. 101 segment.

Nervous residents and public officials again received a reminder of the creek's destructive powers in December 2012. Rushing upstream water pounded the levee in East Palo Alto, causing damage that threatened to destroy the adjacent neighborhood and flooding some streets when water came up through storm drains.

Then-East Palo Alto Mayor Ruben Abrica scrambled to secure state emergency funds to repair the levee and portions of Woodland Avenue beside the creek.

Now the project is the first in the country to address 100-year flood protection with sea-level rise, and it is a model for other projects, Mr. Burt said.

Mr. Abrica, who sits on the JPA board, said he has a feeling of deep satisfaction that some of the wrongs done to the creek over the decades, with its re-engineering and dirt-pile levees made by farmers who wanted to use the creek water, will be corrected.

One of the major stumbling blocks involved is how to protect the endangered Ridgway's rail and the salt marsh harvest mouse and other threatened and endangered species.

Anne Morkill of the U.S. Fish and Wildlife Service said the project represents a paradigm shift of ecosystem and flood-control restoration.

"The (Bay) has lost 90 percent of its wetlands here, and the goal is to bring back 100,000 acres of marshland," she said.

"Through discussion we came up with a win-win situation" that protects the endangered species habitat and people, she added.

Comments

1 person likes this
Posted by Abba Niv
a resident of another community
on Aug 9, 2016 at 3:31 am

Abba Niv is a registered user.

Flood control article.
As a drainage engineer for the past 65 years. The approach as presented seems inadequate.
What is the area to the west which drains into the bay for this stream bed?
How much water will flow in west of 101?
What is the elevation of the bottom of the culvert on 101? C
Can the culvert pass a flood flow from the west?
Can the stream bed allow that flow to reach the bay without flooding homes on either side

The design must have a bottom as low as possible to allow flood water from the west to reach the bay at sea level plus!

As I plan to be in Palo Alto in the later half of September, I'd like to see the site My address willbe c/o Mr Naphtali Knox 1025 Forest' Palo Alto/


Sorry, but further commenting on this topic has been closed.

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