Ice jams in Pennsylvania are causing the Allegheny River to flood.
Some people in Armstrong County are now dealing with flooded homes and roads.
These ice jams happen when ice freezes on the river and flow downstream, getting caught on dams and river bends.
The Coast Guard and the Army Corps of Engineers are keeping a close eye on the river, but residents are not optimistic that things will improve soon.
When the river starts flowing again, rushing water and ice can damage property downstream.