The above Box Elder maple and the 2 Eastern Cottonwood trees have recently been worked on by local beavers.
These 2 Eastern cottonwood trees will be cut completely down at some time. Notice the bottom photo there is a sapling just to the left of the cottonwood tree that was cut and removed. This tree was probably dragged off to be eaten or used to make a den.
Beaver don't usually make a den in the water of the Missouri river. They put their den on the river bank.
Psalm 39:7 "And now, Lord, for what do I wait? My hope is in You."