NEW YORK (AP) -- Flooding is threatening much of the East even as Irene's march up the seaboard draws to a close.
Sirens were triggered Sunday by rising waters at a dam on a creek near Gilboa in upstate New York.
Environmental officials urged residents to seek higher ground but said they didn't believe the dam was in danger of imminent failure.
Flooding has closed roads across the region, and not just in coastal areas where Irene's surge inundated the shore.
Swollen creeks and rising rivers are filling streets in Pennsylvania and New Jersey.
Heavy rains this summer have already saturated the ground and exacerbated flood dangers.