News Staff
Wednesday, December 10, 2025
The majority of folks living in South Dakota today do not remember when the Missouri River was a free-flowing river which flooded every spring. This flooding was usually caused by ice jams, which occurred when massive chunks of dislodged, free-flowing ice refroze or got caught further downstream. These ice jams could be started at bridge pilings, shallow areas, river bends, narrow areas, or a myriad of other naturally occurring obstacles such as rocks or tree trunks.