Spraying Drainage Ditches in the Township Right Away

Please refrain from spraying in the drainage ditches along side the road. They require vegetation to keep them from washing out with storms. There is nothing to hold the solid in place if all the vegetation is dead. We have seen numerous spots in the township where the landowner has sprayed the with area thus killing all vegetation. I assume people were unaware of the importance of having vegetation in the ditches. We ask for your help with this going forward. No vegetation in the ditch will cause unnecessary work for our roadcrew to repair washed out ditches. They have plenty of work to do trying to catch up as it is.
Thank you in advance for your consideration in the matter.