Amtrak says it's not clear when service will return along the Northeast Corridor between Boston and Philadelphia after Hurricane Irene.
Floodwaters remained Monday on the tracks in Trenton, N.J., used by Amtrak and commuter trains.
Spokeswoman Danelle Hunter says the rail line is also dealing with power issues in some areas. And crews worked Monday afternoon to remove trees and other debris that got pushed on the tracks by Irene.
Hunter says trains are running as usual between Washington and Philadelphia.