They were often caused by ice dams blocking the river.

Another potential source of winter problems is an ice dam.

Then, suddenly, like an ice dam bursting, it was too much.

"The water has some way to rise before it tops that ice dam."

The lake was held back by an ice dam of the remaining glacier.

To find an ice dam, though, one must look up, not down.

Since ice dams often form under the snow, they are sometimes difficult to spot.

Its cause was the sudden release of a massive, 4-mile-long ice dam.

The ice dam itself is some two and half miles across.

Maybe ice dams, but since this house isn't used in the winter that's probably not it.

High temperatures during the following couple of days added to the ice jam, and several families were forced from their homes by the rising water.

But in 1902 water backed up from an ice jam and flooded it again, washing away the old building.

A severe ice jam also developed behind the dam on this date.

Senator Lieberman called the speech "an important statement that could break the ice jam and result in a major agreement."

However, an early spring and ice jam destroyed the piers.

In 1910, an ice jam took out three spans on the north side.

Thus in most northern areas governments quickly act to break up the ice jams before they can do much damage.

It was wrecked by an ice jam in 1913 and repaired.

The river is known for ice jams during the spring freshet.

It was destroyed by an ice jam eight years later, and rebuilt in 1882.