Public Information Statement
Issued by NWS Seattle/Tacoma, WA

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NOUS46 KSEW 021717
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Public Information Statement
National Weather Service Seattle WA
920 AM PST Fri Dec 2 2016

...Adjustment to be made to the flood level for the new flood
warning point at White River at R Street gage...

The flood flow level for the White River at R St. gage will be
adjusted from 6,000 cubic feet per second (cfs)to 5,500 cfs starting
Monday morning, December 5, 2016. Additional evaluations have
indicated that flood impacts could be expected with flows starting
at the 5,500 cfs level. Due to the changing nature of the stream
channel of the lower White River, there is a fair amount of
uncertainty regarding at what river level the flooding will begin.
This evolving nature of the river will likely mean continued
adjustments to the flood levels as we see what the actual flood
impacts are under high water conditions in the coming months and
years.

Flood warnings for the White River R St. gage will address flooding
from Auburn down to the confluence with the Puyallup River,including
the cities of Auburn, Pacific, and Sumner. This area has seen an
increasing flood threat over the last several years due to changes
in the stream bed. Here are the flood levels for the three flood
categories that will be in effect as of December 5, 2016:

Minor Flood flow/flood warning level.....5,500 cfs
Moderate Flood flow......................8,000 cfs
Major Flood flow........................10,000 cfs


If you would like more information about the National Weather
Service hydrologic services in the Seattle area...please contact
Brent Bower...Senior Service Hydrologist...at 206-526-6095.

$$

weather.gov/seattle

$$

jbb



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