2011 ORS § 549.400¹
Obstruction, befoulment or pollution of ditch prohibited

No person shall throw, dump, place or allow to be thrown, dumped or placed, any rubbish, refuse or any article or thing in any ditch, lateral, canal, slough, waterway or conduit constructed, operated or maintained under the provisions of ORS 549.310 (Application of ORS 549.320 to 549.400) to 549.390 (Appeal from order authorizing work or assessing damages), or befoul, pollute or allow to be befouled or polluted any such ditch, lateral, canal, slough or conduit.