Project activities are limited to the following.

1. (1) Bank Terracing, Sloping, and Reshaping. Such projects include bank terracing and sloping, and associated placement of biodegradable erosion control, to facilitate establishment of woody vegetation. A project must meet the following criteria:

   1. (a) The slope must not be steeper than 3:1 (horizontal:vertical) ratio unless otherwise approved by the Department when natural slopes within the waterway reach are steeper than 3:1;
   2. (b) The entire bank treatment area must be replanted with native vegetation appropriate to the area and at a density consistent with natural stream bank densities in the area, unless otherwise approved by the Department; and
   3. (c) Planting of native vegetation must be completed by March of the year following establishment of the new contours unless otherwise approved by the Department.

2. (2) Placement of Large Wood. Trees or root wads may be used. A project must meet the following criteria:

   1. (a) At a minimum, root wad diameter, trunk diameter and tree length, or their cumulative effect, must be of a size sufficient to withstand the rate of flow that caused the bank erosion;
   2. (b) The root wads or basal ends must be oriented upstream unless otherwise approved by the Department;
   3. (c) Large wood must be of a species native to the riparian zone within the project area or a reference area unless otherwise approved by the Department;
   4. (d) If fastening is necessary, only pinning may be used; and
   5. (e) If anchoring is necessary, only rock ballast, untreated wood posts, stabilizing wood or key pieces of wood may be used as anchors.

3. (3) Log Toe Placement. The project must meet the following criteria:

   1. (a) Log toes must not extend more than one foot above the elevation of the water at base flow (i.e., the flow sourced from the ground and not from runoff);
   2. (b) Logs must be large enough to withstand the hydraulic energy in the stream and be anchored securely to the bank by burial; and
   3. (c) Logs must be of a species native to the riparian zone within the project area unless otherwise approved by the Department.

Statutory/Other Authority

ORS 196.600 - 196.692 & 196.795 - 196.990

Statutes/Other Implemented

ORS 196.600 - 196.692 & 196.795 - 196.990

History

DSL 2-2024, amend filed 05/31/2024, effective 07/01/2024
DSL 15-2018, minor correction filed 01/03/2018, effective 01/03/2018
DSL 2-2011, f. & cert. ef. 3-1-11