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Frequently Asked Questions...
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Flood protection is a critical priority in Sutter County, which is protected by more than 200 miles
of levees. New, higher standards have been imposed to ensure the stability of the levees in the
event of major storms and high water. Although primarily a State responsibility, levees and flood
protection also present many challenges to local government. The following are among the most
frequently asked questions regarding the levee program, followed by answers to help inform the
public and developed by County staff and engineers.
This document will be updated as events warrant.
If your question hasn't been answered or you have suggestions or comments, feel free to contact
the Public Works Water Resources Department by submitting a
contact form.
You can view the answers by clicking on the questions.
There has been more than $55 million invested in repairs to the levees over the past decade,
addressing critical known problems and improving their strength. But the State and federal
governments have raised the requirements to meet new standards in the wake of Hurricane
Katrina and other experiences that taught us much about levee safety.
The regulations are the result of lessons learned from very real and tragic events.
Compliance is necessary for the safety of the community.
FEMA has long required levees to be constructed and maintained to a height and strength
that would withstand a "100-year flood" to reduce the flood risk to the point of not
requiring flood insurance. In past
FEMA mapping studies, existing levees which were high
enough were assumed to be properly constructed. Now,
FEMA requires that all existing
levees be "accredited," meaning they must undergo state-of-the-art engineering analysis
to verify that they meet present-day design, operation and maintenance criteria.
History shows that we had 15 major floods in the last century. Three most recent ones
involved levee breaks in Sutter and Yuba counties. They occurred in 1955, 1986, and 1997.
The Federal Emergency Management Agency
(FEMA)
produces maps that designate inland areas
by risk factors such as "A," "AE," "AR," and "X."
"A" represents the highest risk. Insurance companies will use those designations
to quote premium rates. It is important to understand that the Federal government is the
insurance carrier for flood insurance; private insurance companies are merely brokers.
The Federal government sets the rates and allows a small commission to private firms.
Once evaluation and maps are completed, Sutter County will likely have large new areas
of flood zones in the "A" designation. Residents who carry lower-cost
"preferred risk" flood insurance prior to those new maps becoming effective will
see their rates increase from approximately $300 per year to $1,100 per year.
However, residents who wait to get flood insurance until it is required will have to
pay $2,000 for the same policy.
Once we have made improvements and worked with
FEMA to get the levees accredited and
new maps issued, insurance rates will drop back to "preferred risk" levels.
FEMA is expected to release new effective maps for the area south of Yuba City in about July,
the Natomas Areas in November, and the northeast Sutter County area (including Yuba City and Live Oak) in 2008.
Currently, Sutter County, Yuba City, and the local levee districts are working with the U.S. Army Corps
of Engineers and State Dept. of Water Resources to evaluate the levees’ strength by taking core samples
to verify the strength of existing levees and identify weak spots where seepage or stability do not meet
standards. In these areas, we must make improvements to meet standards. Additionally, we must verify that
the height of levees is at least 3 feet above the 100-year-flood level in confined waterways, ensure
that drainage of areas on the dry side is adequate, and address other issues. We are clearly at the
early stages of a long-term effort for improvements. Tentative estimates call for construction work to
begin in 2009 and continue for several years.
Several factors will help us develop priorities, including extent of weakness or inadequacy in a levee,
and population or economic impact at risk. Those high-risk urban areas where there is more population,
such as Yuba City and Live Oak, will be higher priority under State and federal funding guidelines.
We don’t know yet. We will provide more financial information once we have assessed the problem and
strategies to address it. It is likely to be an expensive program.
While the State and Federal governments bear primary responsibility for levees, it is clear that local
communities will be expected to share in the costs. Since no significant reserves exist to finance repairs,
it is very likely that residents will have to contribute a share in the form of some type of tax or assessment.
Whatever the obligation and options considered to deal with it, we will provide information and opportunities
for public input throughout the process.
Watch the local news media for public meetings regarding flood protection. The County Board of Supervisors
and local city council agendas will include updates as appropriate. We are planning to post relevant reports,
maps, and reference materials on the County and City’s websites. Watch
www.suttercounty.org,
and
www.yubacity.net for information.
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