(1) The riparian management area measurement widths for streams in each geographic region for both the standard practice prescriptions and small forest owner minimum option prescriptions are provided for each stream type and size classification in OAR 629-643-0100 through 629-643-0500. The measurement widths apply to each side of the stream.
- (a) Except as indicated in section (2), the operator shall measure the riparian management area width using the slope distance. The operator shall measure the riparian management area from the edge of the active channel, or channel migration zone if a channel migration zone is present, as defined in OAR 629-600-0100, and consistent with this rule.
- (b) Notwithstanding the distances designated in subsection (1)(a), where wetlands or side channels extend beyond the designated riparian management area widths, the operator shall expand the riparian management area as necessary to entirely include any stream-associated wetland or side channel plus at least 25 additional feet.
- (2) In situations where the slope immediately adjacent to the stream channel is steep exposed soil, a rock bluff or talus slope, operators shall measure the riparian management area as a horizontal distance until the top of the exposed bank, bluff or talus slope is reached. From that point, the remaining portion of the riparian management area shall be measured as a slope distance.
Statutory/Other Authority
ORS 527.710 & Section 2(1), Chapter 33, Oregon Laws 2022
Statutes/Other Implemented
ORS 527.710, 527.765, 527.620 & Section 2(2), Chapter 33, Oregon Laws 2022
History
DOF 7-2022, amend filed 11/21/2022, effective 01/01/2024
DOF 1-2017, f. 6-9-17, cert. ef. 7-1-17
FB 3-1994, f. 6-15-94, cert. ef. 9-1-94, Renumbered from 629-057-2200