Growing up adjacent to the Susquehanna, every winter featured ice skating on the river and many years when huge ice jams would back the river up and cause flooding in Washington Boro and at Long Level. I remember one year the mounds of ice were over 10' high and the ice would "moan" as it slowly moved about.
Skating on the Susquehanna hasn't been available for years down this way and ice jams are rare as well. Just doesn't get cold enough, long enough for it to happen.