OAR 690-503-0040: Surface Water Classifications

Edition: Current OARD snapshotEffective: 1991-03-14Last verified: 2026-09-07

Official history and status

Statutory/Other Authority: ORS 536.220, 536.300 & 536.310

History: WRD 4-1991, f. & cert. ef. 3-14-91

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Official source: https://secure.sos.state.or.us/oard/