March 12, 2007
Phase II flood alerts issued for Green, White rivers
Snoqualmie remains at Phase III, Tolt Phase II, as King County monitors flows
Scheduled water releases from dams on the Green and White rivers
have brought flows on these two rivers into a Phase II flood alert
level, according to the King County Flood Warning Center. A Phase
III flood alert level remains in place on the Snoqualmie River,
while the Tolt River remains at Phase II flood alert level.
As of 10:30 a.m., the White River was flowing at 7,400 cubic feet
per second (cfs), well above the 6,000 cfs threshold for a Phase
II declaration. At this water level, roads may be overtopped in
the Red Creek area, downstream from Mud Mountain Dam.
Scheduled releases from Howard Hanson Dam on the Green River are
expected to bring flows of about 7,000 cfs to the Auburn gauge later
today. At this water level, which is the threshold for declaring
a Phase II flood alert level, minor lowland flooding could be expected
in the Green River valley upstream of Auburn.
Meanwhile, the Snoqualmie River remains at a Phase III flood alert
level, with a number of roads closed due to high water. At 11:30
a.m., the sum flow of the three forks of the Snoqualmie was 20,200
cfs and dropping, however, flows continue to rise upstream at Snoqualmie
Falls. The threshold between a Phase II and Phase III flood alert
level on the Snoqualmie is 20,000 cfs.
The Tolt River remains at a Phase II flood alert level, with only
minor flooding reported. At 11 a.m., the Tolt River near Carnation
was flowing at 2,610 cfs and dropping.
A Phase II warning on any major King County river is the level
of the county's four-phase warning system at which the Flood Warning
Center is activated to monitor lowland flooding. The center has
been open since 11 a.m. Sunday. Real-time
river level information is available online by visiting: http://dnr.metrokc.gov/wlr/flood/flood.htm.
A number of roads are affected by high flows. Problems on county
maintained roads can be reported by calling 206-296-8100 or 1-800-KC-ROADS.
King County is advising residents living or traveling in flood-prone
areas to continue to monitor weather conditions and be on the look
out for road closures. Motorists are reminded never to drive through
standing water or around barricades; this is how most lives are
lost during flooding.
Residents in affected areas can get updated information on flooding
on the King County Web site at www.metrokc.gov,
or can visit RPIN, the
area's regional Web site at www.govlink.org.
A recorded flood-information hotline is also updated each hour for
citizens wanting information in flood areas. The number is 206-296-8200
or 1-800-945-9263. Citizens who need help interpreting flood information
should call 206-296-4535 or 1-800-768-7932.