NEW : U.S. Army Corps of Engineers sends six flood flight teams to Washington state . Damage assessments begin immediately on 200 homes , an official says . Flooding reported on several rivers , with some still rising . Several counties report flooding , Washington state says .
NEW : U.S. Army Corps of Engineers sends six flood flight teams to Washington state . Damage assessments begin Monday on flooded homes , an official says . Flooding reported on several rivers , with some still rising . Nine counties report flooding , Washington state says .