The river typically freezes over during much of the winter.

The river freezes in winter but may still flow under the ice.

However, in 1917, the river froze, leaving the city without supplies for two months.

The river of fear that flowed through him froze over and turned his blood to ice.

The river froze and even deer had trouble finding water.

In the winter, the river never completely freezes although it does form a heavy layer of ice.

The river had frozen over and snow lay on the solid ice.

He wondered if the river would freeze solid before spring.

Not my choice, but the river froze early and the ice broke up late.

Scant help could come to the Russians from the east until the river froze hard.