OAR 141-089-0810
Wetland Ecosystem Restoration - Authorized Activities

The following activities are allowed under this general authorization:

(1)

Vegetation Management. Ground-altering activities needed to re-establish and maintain native vegetation, such as mechanized land clearing to remove non-native vegetation and disking for seedbed preparation and planting of native wetland species.

(2)

Floodplain Contouring. Floodplain contouring of wetland terraces to reconnect a waterway to an adjacent wetland or expand the area of seasonal inundation. This activity does not include modification of a stream channel.

(3)

Microtopography Establishment. Grading and contouring to re-establish microtopography (hummocks, minor ridges, very shallow depressions) in areas that have been previously leveled, scalped or otherwise disturbed to eliminate pre-existing microtopography. Activity is limited to six-inch maximum elevation rise or drop.

(4)

Macrotopography Establishment. Shallow excavation to create scrapes, basins, meanders and swales that do not exceed two feet in depth from existing or original ground surface and have minimum side slopes of 6:1 or gentler. If shallow excavation is combined with berm construction described in Section 6 of this rule, the maximum depth of inundation must not exceed two feet.

(5)

Removal of Materials. Removal of soil or other materials that have been placed in a wetland for the purpose of restoring the natural and/or historical topography.

(6)

Low Earthen Berms and Spillways. Construction of low earthen berms and vegetated spillways that impede, contain or direct surface water may be used to extend the area or duration of shallow inundation. The design height of the berms must be no more than 18 inches from the existing ground level and have a maximum top width of four feet, variable slopes at a minimum of 6:1 or gentler on the water side, and maximum slopes of 6:1 on the land side, unless gentler slopes do not result in the conversion of wetland to upland. These structures may be installed to manipulate seasonal water depth, duration and degree of fluctuation that would be characteristic of natural or historical hydrologic conditions and to manage invasive species. When berms are combined with shallow excavation described in Section (4) of this rule, the maximum depth of inundation must not exceed two feet.

(7)

Removal of Structures. Removal of diversion structures, water control structures, small (three feet high or less) berms and tidegates, as long as the removal does not cause water to rise or be redirected in such a manner to result in damage to structures or substantial property.

Source: Rule 141-089-0810 — Wetland Ecosystem Restoration - Authorized Activities, https://secure.­sos.­state.­or.­us/oard/view.­action?ruleNumber=141-089-0810.

141‑089‑0620
General 141‑089‑0625
General Authorizations (GA) 141‑089‑0630
Project Applicability 141‑089‑0635
Fees 141‑089‑0640
Pre-Construction Notification 141‑089‑0645
Expiration of Project Eligibility 141‑089‑0650
General Conditions 141‑089‑0655
Enforcement 141‑089‑0656
Authorization Decision Appeals 141‑089‑0660
Minimal Disturbance Within ESH - Purpose 141‑089‑0665
Minimal Disturbance Within ESH - Eligibility Requirements 141‑089‑0670
Minimal Disturbance Within ESH - Authorized Activities 141‑089‑0675
Minimal Disturbance Within ESH - Activity-Specific Conditions 141‑089‑0680
Piling Placement And Removal Within ESH - Purpose 141‑089‑0685
Piling Placement And Removal Within ESH - Eligibility Requirements 141‑089‑0690
Piling Placement And Removal Within ESH - Authorized Activities 141‑089‑0695
Piling Placement And Removal Within ESH - Activity-Specific Conditions 141‑089‑0700
Temporary Impacts to Non-Tidal Wetlands - Purpose 141‑089‑0705
Temporary Impacts to Non-Tidal Wetlands - Eligibility Requirements 141‑089‑0710
Temporary Impacts to Non-Tidal Wetlands - Authorized Activities 141‑089‑0715
Temporary Impacts to Non-Tidal Wetlands - Activity-Specific Conditions 141‑089‑0720
Waterway Bank Stabilization - Purpose 141‑089‑0725
Waterway Bank Stabilization - Eligibility 141‑089‑0730
Waterway Bank stabilization - Authorized Activities 141‑089‑0735
Waterway Bank Stabilization - Activity-Specific Conditions 141‑089‑0740
Transportation-Related Activities - Purpose 141‑089‑0745
Transportation-Related Activities - Eligibility Requirements 141‑089‑0750
Transportation-Related Activities - Authorized Activities 141‑089‑0755
Transportation-Related Activities - Activity-Specific Conditions 141‑089‑0760
Removing Sediment Behind Tidegates - Purpose 141‑089‑0765
Removing Sediment Behind Tidegates - Eligibility Requirements-Ineligible Projects 141‑089‑0770
Removing Sediment Behind Tidegates - Mandatory Requirements 141‑089‑0775
Removing Sediment Behind Tidegates - Conditions of Issuance of General Authorization 141‑089‑0780
Waterway Habitat Restoration - Purpose 141‑089‑0785
Waterway Habitat Restoration - Eligibility Requirements 141‑089‑0790
Waterway Habitat Restoration - Authorized Activities 141‑089‑0795
Waterway Habitat Restoration - Activity-Specific Conditions 141‑089‑0800
Wetland Ecosystem Restoration - Purpose 141‑089‑0805
Wetland Ecosystem Restoration - Eligibility Requirements 141‑089‑0810
Wetland Ecosystem Restoration - Authorized Activities 141‑089‑0815
Wetland Ecosystem Restoration - Activity-Specific Conditions 141‑089‑0820
Non-motorized In-stream Placer Mining in ESH – Purpose 141‑089‑0823
Non-motorized In-stream Placer Mining within ESH - Definitions 141‑089‑0825
Non-motorized In-stream Placer Mining in ESH - Eligibility Requirements 141‑089‑0827
Non-motorized In-stream Placer Mining within ESH - Expiration and No Transfer 141‑089‑0830
Non-motorized In-stream Placer Mining in ESH - Authorized Activities 141‑089‑0835
Non-motorized In-stream Placer Mining in ESH - Activity-Specific Conditions
Last Updated

Jun. 8, 2021

Rule 141-089-0810’s source at or​.us