All new ditches require a ditch buffer. Existing drainage systems are essentially grandfathered in, meaning they are allowed to continue without a one-rod buffer until the Drainage Authority orders a Re-determination of Benefits or a Determination of Benefits for an improvement is performed. Ditch buffers are required on all improvements.
Establishing ditch buffers is not required for most repairs. Some repairs, such as re-sloping, require viewers and a buffer must be established.