US lawWashingtonRegulationsTitle 173 — ECOLOGY, DEPARTMENT OFChapter 173-18 — SHORELINE MANAGEMENT ACT—STREAMS AND RIVERS CONSTITUTING SHORELINES OF THE STATE173-18-030WAC 173-18-030WAC 173-18-030. DefinitionsLast amended: 1972Year: 2026Length: 14 wordsOfficial source The definitions and concepts set forth in RCW 90.58.030 shall apply as used herein.PreviousWAC 173-18-020NextWAC 173-18-040