Cheyenne River
A map of where the Cheyenne River is located.
Does the Cheyenne River abandon or change its delta?
No, the Cheyenne River does not change its delta because it joins the Missouri River and flows into Lake Oahe.
Has it changed course? What have the cities or communities done?
It has never changed course so there has never been preparation needed.
Does it have a delta? Do sediments build up?
The Cheyenne River does not have a delta where it joins the Missouri River. So, because there is no delta there can be no build up of sediment.