What FishingRod said,, the COE is hugely influenced by political control of the country, as of the moment they are all powerful, they are going to save the world in the next few yrs. the four yrs prior they were somewhat neutered and lost a ton of steam, prior to that they were all powerful, they were planning on putting regulations and be in control of a minute draw in a cornfield, navigable waters wasn't in their dictionary anymore. they were gonna control everything. The association I belong to did a lot of work fighting their over reach and after 2016 they just sorta went back to navigable water control.
Check out the description of WOTUS. they were going to regulate anything and everything, any draw that water flowed thru at any point in time.
