Tag Archive | "green river valley"

Flood risk drops dramatically for Howard Hanson Dam

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Flood risk drops dramatically for Howard Hanson Dam


PH03738IIn a story in the Kent Reporter dated November 5 by reporter Steve Hunter, the community learned that the flood risk for the Howard Hanson Dam has dropped dramatically from early predictions. According to the article, a recent fix to the dam dropped the Green River Valley’s chance of flooding from a 1 in 3 chance to 1 in 32. Compared to the 1 in 140 chance offered by an undamaged dam, this risk is dramatically reduced, but a high risk of flooding still exists.

Read the full story here.

Thanks to the Kent Downtown Partnership for sharing this story.

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KCC Authorizes Emergency Funding for Relocation of Co. Serv. in Case of Flooding


Contact: Al Sanders 206-296-1685/Frank Abe 206-296-0355

October 19, 2009

Council authorizes emergency funding for relocation of County services and protection of County facilities in flood-threatened Green River Valley

Vital county services to continue operating despite any flooding from federal Howard Hanson Dam.

The Metropolitan King County Council today authorized the emergency funds needed to relocate County services and protect critical County facilities in the Green River Valley, in advance of the threat of flooding from the storm-damaged, federal Howard Hanson Dam.

“It is imperative that the County take the necessary actions to protect our employees and the facilities in which they work in the Green River Valley,” said Councilmember Larry Gossett, chair of the Council’s Budget and Fiscal Management Committee that reviewed the legislation. “Today’s actions help us prepare to take the steps we need to ensure continued operation of vital county services.”

“Our job is to protect citizen access to their government and the services that only we can provide,” Said Councilmember Jane Hague.

“In the event of a major flood, it is crucial that King County be able to guarantee basic services, such as wastewater treatment, to its citizens,” said Council Chair Dow Constantine. “These measures will also allow King County to maintain its key justice system functions during an emergency.”

The $34.6 million appropriation funds work already underway to, among other things:

·       negotiate for jail space to relocate inmates from the Maleng Regional Justice Center (MRJC),
·       negotiate for leases to relocate Superior Court, District Court, the Prosecuting Attorney, the Public Defender, and Judicial Administration from the MRJC,

·       hire a contractor to build a wall of concrete blocks and earthen berms around the MRJC, and provide flood protection around other critical, valuable County facilities,

·       negotiate for leased space for Aukeen District Court and affected public health facilities,
·       lease a temporary animal shelter for five months,
·       lease generators capable of producing 16 megawatts of electricity to continue pumping treated sewage out of the South Treatment Plant in the event of a power failure,

·       erect a water barrier around the South Treatment Plant, and
·       move the Elections Office out of the Earlington Building to the King County Airport Operations Center.

“It would be irresponsible if King County was not prepared,” said Councilmember Julia Patterson. “The County has already acted to protect the November election, but if other critical services are not protected, flooding in the Green River Valley could leave our employees at the Regional Justice Center unable to provide basic services to citizens, and raw sewage headed to our wastewater treatment facility could back up and pollute Lake Washington. This funding provides reassurance that County services, services that are critical to protecting people, property, and democracy, will continue in the event of a flood.”

“This emergency funding to protect our wastewater facility could save millions in property damage” said Councilmember Reagan Dunn. “Preserving county services and protecting the wastewater facilities from damage are key elements of responsible planning and response to the flood threat.”

“To ensure the health and safety of King County residents, we must make these investments to prepare for potential flooding,” said Councilmember Bob Ferguson. “The U.S. Army Corps of Engineers has made it clear that it may take the federal government 5 years to permanently fix the dam. Today’s decisive action is an important step in addressing a multi-year problem.”

“If flood waters strike there will be limited time to react to keep our facilities out of harm’s way,” said Councilmember Pete von Reichbauer. “This decision assures that the County’s vital services such as wastewater treatment will continue their primary responsibility of serving the homes and business in the Green River Valley.”

The ordinance provides funds to lease a temporary King County animal shelter for five months, but prohibits the use of the funds for purchase of an animal services facility. The County Executive has already announced that animals will be relocated from the animal shelter in Kent and the facility closed by November 1 in anticipation of the flood threat, and proposed the transition of both animal control and sheltering services to a new entity by June 30, 2010.

“As an advocate for being prepared, I appreciate this thoughtful plan for moving the animals in our Kent shelter out of harm’s way due to the threat of severe flooding this winter,” said Councilmember Kathy Lambert. “Because the warning period for flooding could be very short, we need to have a flexible and cost-effective plan for transferring our court operations as well as the animal shelter to temporary locations. I am confident that this framework will provide for the continuity of operations that still delivers compassionate care for the animals in our custody and responsive customer service in our court system.”

Of the emergency funds authorized today, $27.2 million will come from the sale of bond anticipation notes and $7.4 million from the County’s Wastewater Treatment construction fund. The legislation requires the Executive to report back to the Council every two weeks on how the money is being spent. Money that is not used during this flood season will be returned to the General Fund and the wastewater fund to be held in reserve in the event of another Green River flood threat next year.

The Council doubled the amount of funds placed into a flood contingency fund from $4.5 million to nearly $10 million by reducing other areas of the Executive’s budget request.

The Council on August 31 gave the County Executive proactive authority to declare a state of emergency in advance of actual flooding, which he did on Sept. 10.

“Relocating vital services out of the Howard Hanson Dam flood zone will ensure that the business of the county will continue uninterrupted in the event of a flood,” said Councilmember Larry Phillips. “This is an interim precaution we must take while urging the federal government to speed up permanent repairs to the dam.”

Agencies that are moved out of their facilities will remain at their interim locations until testing on the interim “grout curtain” being injected into the earthen abutment next to the Howard Hanson Dam is complete and it is determined that it is safe to return. The legislation calls on the Executive to report back to the Council with a 3- to 5-year relocation plan for County facilities, the period of time the Army Corps has said it will take to design, fund and construct a permanent fix for the dam.

Read more about this legislation on the King County Council’s LEGISEARCH system at
http://kingcounty.legistar.com and type in “2009-0559 and 2009-0560”

Follow the Council’s deliberations through Twitter by visiting the

King County Council Web site at:
www.kingcounty.gov/council

Watch all Council proceedings held in chambers LIVE on King County TV
on Comcast and Broadstripe Cable on channel 22, or online at:
www.kingcounty.gov/KCTV

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Giant Sandbags to Help Prevent Flooding


New information 10/2/09 from City of Kent:

Starting the weekend of October 10, the City will begin placement of 20,000 giant sandbags on 12 miles of Kent’s levees.

Each giant sandbag is 3×3 feet wide, stands 3 feet tall and weighs 1.7 tons, or 3,375 lbs. They will be covered with black vinyl plastic to help seal them and keep water from getting inside, as well as protect them from ultra-violet (UV) damage.

City staff will place an equal number of small sandbags to hold the plastic vinyl in place.

Originally posted 9/23/09:

Contact:
Michelle Witham, City of Kent
253-856-5709
mwitham@ci.kent.wa.us

Giant Sandbags Ordered to Help Prevent Flooding

Kent Mayor Takes Proactive Step to Protect Valley Residents and Businesses

KENT, Wash. – September 22, 2009 – With restrictions on the water pool level behind the Howard Hanson Dam, Kent Mayor Suzette Cooke, Chair of the King County Flood Control Zone District Advisory Committee, took a proactive step to reduce potential flooding this winter in the Green River Valley.  “Our first line of defense should be to fight the flood at the levee – not in the Valley,” Cooke declared.  “It is much less costly to prevent flooding in the first place, than to suffer the financial and emotional expense of cleaning up after a flood.”

Cooke requested staff begin purchasing giant sandbags for placement on top of the Green River levee system within Kent’s city limits.   The City is coordinating its efforts with the US Army Corps of Engineers, King County and the other Valley cities of Auburn, Tukwila and Renton.

According to Larry Blanchard, Kent’s Public Works Director, these structures are a proven method to assist in flood-fighting.  “Giant sandbags have been successfully used around the country to manage the flow of water,” Blanchard said.  “They would be up to three feet high and weigh 3,500 pounds each.  They are easily installed and can be placed on top of Kent’s levees to increase their height.”

A recent engineering survey of the levee elevation indicated with every one foot increase in height of the river bank, the Green River gains an additional 1,000 CFS (cubic feet per second) capacity.  “The giant sandbags will provide additional capacity in the Green River, allowing us to protect ourselves up to 13,900 CFS with three feet of free board space above the river’s main flow level,” Blanchard said.

The City previously considered using giant water-filled bladders, or aqua-dams, to line the levee system but determined that sandbags are more sturdy.  Aqua-dams may be used as a second line of defense.

Kent officials are still preparing for potential flooding this winter due to concerns about the Howard Hanson Dam after sink holes were discovered in its right abutment last January.  The U.S. Army Corps of Engineers, who has responsibility for the dam, has warned that it will not be able to hold back as much water as in the past during heavy rains, therefore increasing the risk of flooding downstream.

“Even with giant sandbags in place along the levees, every resident and business in the Green River Valley needs to purchase flood insurance and devise a plan for evacuation,” Cooke said.  “Emergency measures are linked to our web site, www.choosekent.com, and being distributed through numerous meetings and mailings.  While the dam itself is not under our jurisdiction, the City is doing all that it can within its authority to prevent a disaster.”

The City of Kent is the fourth largest city in King County, Washington with a population over 88,000. As a culturally rich destination, Kent’s dynamic quality of life features captivating neighborhoods, award-winning parks and nationally accredited police and fire departments. In recent years, Kent has experienced impressive economic growth, and is nationally known as a prime location for manufacturing. For more information, visit www.choosekent.com.

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Flooding in the Green River Valley: What You Need to Know

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Flooding in the Green River Valley: What You Need to Know


flood.ashx

Flooding in the Green River Valley

Residents, businesses and farms below the Howard Hanson Dam in the Green River Valley should prepare for floodprepare now for a higher risk of flooding. Parts of Seattle, Auburn, Kent, Renton and Tukwila—could be flooded and evacuations in some communities are possible.

MORE INFO HERE.

Are you ready?

See the King County Flood Plan website for complete information on upcoming presentations and tips on how to prepare for potential flooding. Events listings here.

Not sure if you are in an area that may be affected? Check this map for more information. Potential areas to be affected are those below the Howard Hanson Dam including Kent, Auburn, Renton, South Seattle and Tukwila.

Additional is also available in this blog post.

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Prepare now for floods

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Prepare now for floods


flood pix

King County is advising residents of the Green River Valley area to prepare for possible flooding this fall. On their list of “to dos”:

1.  Make an emergency plan and an emergency kit.

2.  Buy flood insurance now. It takes 30 days to become active. Check with your local property & casualty insurance agent* for a quote.

3.  Purchase an AM or emergency radio that runs on batteries.

4.  Monitor news media for severe weather.

5.  Listen for evacuation alerts and be aware of evacuation routes near you.

6.  Monitor local road conditions and obey road closure signs.

7.  Take medications and medical supplies with you.

8.  Be prepared to relocate pets, livestock and other animals.

9.  Minimize flood damage.

For more information and tips on how to prepare for a flood, visit the King County website.

*Some local agents with knowledge about flood insurance include:    Patti Jenson, Allstate (Maple Valley); Rob Jones, Farmers Insurance; Doug Jones, State Farm; and Rod Saalfed, Bell-Anderson Insurance.

[Note:  There are other agents throughout the Green River Valley area who will also be able to provide a quote on flood insurance. This list is not all inclusive and not meant to endorse any of the listed agents.]

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Get up-to-date info on Howard Hanson Dam

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Get up-to-date info on Howard Hanson Dam


From the City of Kent’s website:

You’ve likely heard the news coverage about the Howard Hanson Dam. King County’s new site provides coordinated information from the County and cities in the Green River Valley. You can find maps, fact sheets, links to other resources, as well as details about upcoming meetings:  King County website

Also visit Kent Emergency Management Website for more information.

Map from King County website:

Howard Hanson dam

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