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Thursday, October 22, 2009

HWY 410 Landslide Update



Naches, WASH-OCT.22 , 2009

Public Meeting Today at the Nile Valley Church- 5:00 PM

Washington State Patrol

WSP is still on site, working with the DOT to maintain traffic flow and patrol the area to insure compliance with flaggers and safety signage.

National Weather Service
These are the sites we watch the river for changes. They are public sites so you can look as well.

Home Page
http://www.wrh.noaa.gov/pdt/

To view the latest river stages and forecasts, select from left hand menu, River and Lakes AHPS or follow link below.

http://ahps2.wrh.noaa.gov/ahps2/index.php?wfo=pdt
Either click on Cliffdell icon or select from drop down menu.
Shows the latest river stage data and forecast/trend out 7 days.
To view graphical forecasts including amount of precipitation expected and possible amount of snow.
From left hand menu, select "Weather Forecasts" and click on region of interest.
The amount of precipitation expected is under "QPF" and is included out
72 hours.

To view precipitation received at differing stations, from the main NWS Pendleton Web page
www.wrh.noaa.gov/pdt

Select Observations and then you can use the click-able Mesonet map site to view locations.
The Northwest River Forecast Center Web page
http://www.nwrfc.noaa.gov/
Can see at a glance, with colored icons, sites that are approaching action or warning stages.
You can also use this site to see current and forecast river conditions as well as the hydrological discussion, and other features.

Washington State DOT
The Nile Road is open to all traffic expect delays. Still working on property acquisition for the interim road. While waiting they are continuing to build up the Nile Road near the lower end to a height of a 100 year flood. They are also working on a monitoring system to insure we are warned in the event the slide moves again. They will be testing this on Saturday we are told. They have in coordination Yakima County Flood Control District lowered the level of the pool behind the slide about a foot.

Yakima County Public Services
Public Services continues to acquire property to establish an interim Nile Road. Once the needed property has been acquired which I understand is very close WSDOT will have the green light to start construction. Then the race is on to see if the road can be built before Mother Nature smacks us again. Just to give you an idea of how important this road is the current flow in the river is between 4-500 CFS. The Yakima County Flood Control Zone District puts the average flow in November at 2000 CFS. This means there were some days there was more some less. The current channel is reported to be capable of carry about 1700 CFS. If one does the math there will be problems with the temporary (Original) Nile Road that has been built up.

Yakima Sheriff’s Office
YSO will have a reduced presence. They will have extra patrols working the area along with WSP.

Yakima Valley Office of Emergency Management
Incident Action Plans continue to be developed for the potential isolation of the area. These plans will be living documents adapting to the changing environment presented by the slide and weather in the future. KR Continues to be available at the Nile Church from 11:00 to 3:00 each day. If you have questions stop by.

The CERT Team has received about 500 survey forms that they developed to begin to identify the situation of the residents in the valley. They will have a table at the Public Meeting Tomorrow Night. Please stop by and help your community prepare for what experts believe is coming.

The above information is excerpts from information gleamed from e-mails discussions and phone conversations with Jim Hall(Director of the Yakima Valley Office of Emergency Management today. As with any situation, things change fast. If you have questions about this incident please call 574-1900 before “assuming” what has been said is totally accurate.

The Nile communities disaster resilience is a thing to be proud of ! The Office of Emergency Management can not say this enough; prepare now. We (government agencies) will not be able to help everyone if the worst happens. Please do not be caught surprised !