ORS § 549.520
If anyone neglects to repair, rebuild or reconstruct a dike as specified in ORS 549.510, the owners of the contiguous tracts of land may complain to the county judge of the county in which the lands or some portion thereof are situated, who, after due notice, shall examine the premises. If the county judge determines that the dike is in need of reconstruction, rebuilding or repair, and that the dike is of sufficient benefit to the lands affected thereby to warrant its maintenance, and if the county judge finds that the dikes on the other contiguous tracts owned by the persons complaining are in a good state of repair, the county judge shall so signify in writing and shall cause to be served upon the delinquent owner a copy of such finding and shall direct the owner to rebuild, reconstruct or repair the dike within such time as the judge determines to be reasonable.
ORS 549.520