As a result of the melting sea ice there is an increase in sea level and increased river levels in reaction to lack of drainage to the ocean

May 22, 2008
Spokane, Washington
Photographer states :: Spokane Falls in Downtown Spokane. River is about 5 feet higher than normal and still has yet to crest.

Spokane River flooding hits peak (click here)
May 23, 2008 08:05 PM EDT

SPOKANE -- The Spokane River hit its height early Friday afternoon and should now continue on a slow but steady fall before finally dipping below flood stage next Thursday.
As a result, the National Weather Service issued Flood Warning for Spokane will remain in tact until Thursday, May 29th unless the river drops faster than expected. But it looks like, barring unforeseen circumstances, the flooding has hit its peak without causing the widespread damage that some had feared....