2011 ORS § 368.251¹
Obstruction of road drains prohibited

No person shall stop, obstruct or in any other manner impair or damage any drain, ditch or other man-made or natural waterway that:

(1) Prevents water from causing damage to, flowing across or standing on a public road under county jurisdiction; or

(2) Benefits a public road under county jurisdiction. [1981 c.153 §26]