* WHAT…Flooding caused by snowmelt and ice jams is expected.
* WHERE…Colville near Umiat To The Mouth Of The River.
* WHEN…Until 400 PM AKDT Friday.
* IMPACTS…High water from rapid snow melt and recent ice jams is
leading to significant flooding along the Colville River.
* ADDITIONAL DETAILS…
– At 939 AM AKDT, Monday morning, water levels at the USGS
Colville River gage at Umiat were at 62.94 ft and still
rising. This is the highest on record by over 3 ft since the
gage was established in 2003.
Water has now inundated portions of the Umiat airstrip and is
encroaching on structures in the camp.
High water extends downstream to the Colville River Delta
where several ice jams have formed over the previous 24-hrs,
leading to flooding of the eastern floodplain.
Once these ice jams release, communities and infrastructure
downstream should prepare for and expect high water and
flooding over the next couple of days.
Water levels are expected to continue to slowly rise and
level off through the end of the week as additional high
elevation snow melt is expected to make its way downstream.
– Http://www.weather.gov/aprfc