The US coastguard has had to deploy icebreakers on New York's waterways to keep shipping and ferry traffic running.
Although the northeastern US is used to cold winters, conditions have been particular icy in early 2015.
Ice in rivers and waterways, including New York's Hudson River, has caused serious travel disruption.
New York City relies on ferries to keep moving and ice build-up from sustained cold weather has brought services to a halt at some points in recent weeks. Temperatures have been consistently below zero for weeks, plummeting further at night.
