If
you regularly drive along Jamboree Road, from the 73 Freeway to the
Newport Beach coast, you will have noticed some dramatic changes at
the uppermost end of the Back Bay. Specifically, sediment washed
down San Diego Creek has transformed areas of open water
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mudflat. The transformation is impacting habitats and species
in the Upper Newport Bay Ecological Reserve significantly.
Species affected include those that are endangered, such as
the California least tern, and those that are commercially
significant, such as the California halibut. At the same time,
sediment carried further down the Bay and out into the ocean
has created navigation problems in the Lower Newport Bay, and
affected the Marine Life Refuges along the coast. |
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The problems caused by the sediment led federal
and state agencies to classify it as a pollutant and set
requirements to reduce the influx into the Bay. One of these
requirements is to provide and maintain a capture basin of specified
depth at the entry of San Diego Creek. The existing basin was not
very efficient in dropping out sediment and it is now full.
Consequently for the last several years large amounts of sediment
have carried through and deposited further down the Bay at a rate as
high as six inches per year in some places in both the Upper and
Lower Bay..
The need for a long-term solution was
identified in the 1990's, various studies were performed, and
alternate designs proposed. The outcome was the $38.5 million UNB
Ecosystem Restoration Project ("dredging project") to be
funded 65% by the federal government and 35% by local partners.
Although all of the roughly $13.5 million local
share of the funds was committed up-front in 2005in 2005, only $11.0
million of the roughly $25 million federal share has been provided
so far. Recently, Senator Dianne Feinstein and Congressmen John
Campbell and Ed Royce were able to secure an additional $2.2 million
in the current federal budget to enable the contractor to start on
the crucial main part of the project: the widening and deepening of
the capture basin at the entry of San Diego Creek to the Bay.
However, unless more federal money is authorized by the fall of
2008, the work will have to stop and the contractor will demobilize.
Remobilization later will result in substantial additional costs.
Sadly, if this funding does not come through in
a timely manner, and the much larger and more efficient capture
basin is not dredged to the needed width and depth, much of the
restoration performed thus far with the local funds may be in
jeopardy. The fact that recent wildfires have ravaged the foothills
of the Newport Bay watershed, leaving barren hillsides that are
prone to mudslide, compounds this concern. If we have a wet winter
in the next several years, a major storm will almost certainly dump
a massive amount of sediment into the Bay which will be deposited in
the recently-dredged areas downstream of the uncompleted capture
basin.
To avoid a costly demobilization this fall two
things must happen. First, the federal Army Corps of Engineers needs
to allocate sufficient bridge funding this summer to keep the
contractor fully mobilized pending approval of the federal October
2008 to September 2009 budget. Secondly, the bulk of the remaining
federal commitment needs to be included in the 2008/2009 budget.
The County of Orange, the City of Newport Beach and the other cities in
the Newport Bay watershed are working with the local Congressional
Delegation to secure final funding for the project. The Newport Bay
Naturalists and Friends urges them to take every action to secure
this funding now in order to honor the federal government's
obligation and avoid unnecessary costly overruns. We encourage
others to express strong support for a restoration project that is
regionally and nationally important.
Roger
Mallett
Newport Bay Naturalists & Friends
Adapted with permission from a recent article in The Daily Pilot
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