erosion in the nexus

the crops are mostly in and the corn stalks and roots are still in the soil...but that doesn't seem to have lessened some of the erosion going on out there...a short trip into the nexus has turned up several cuts in the berms and if i had had more time i probably could have discovered more...that break in the third photo feeds into what i have to calla ditch in the fourth...that bisects a field and i am wondering how long it has taken it to become that deep...that big pile of cut trees and brush in the bottom photo ( probably shrubs growing on the periphery of the fields ) tells me the farmer is getting bigger by bringing some marginal land under production next season and that the rate of soil erosion isn't going to abate.