OAR 629-642-0500
Leaving Green Trees and Snags along Small Type N Streams subject to Rapidly Moving Landslides

(1)

The purpose of this rule is to provide a source of large wood that can be moved by rapidly moving landslides into Type F or Type SSBT streams.

(2)

When directed by the State Forester, operators must retain green trees and snags required for harvest type 2 or type 3 units under ORS 527.676 (Leaving snags and downed logs in harvest type 2 or 3 units) adjacent to small Type N streams subject to rapidly moving landslides likely to deliver wood to Type F or Type SSBT streams.

(a)

The green trees and snags must be retained within an area that is 50 feet on each side of the small Type N stream and 500 feet upstream from a riparian management area of a Type F or Type SSBT stream.

(b)

Requirements under OAR 629-623-0300 (Public Safety Risk Levels) supersede the requirements of this rule.

(3)

Operators are required to retain all green trees and snags in the area described in subsection (2)(a) of this rule up to the number determined by the equation H - T where:

(a)

H is the total number of green trees and snags required to be retained in the harvest type 2 or type 3 unit; and

(b)

T is the number of trees retained in riparian management areas in the harvest unit that may be counted as harvest unit leave trees under OARs 629-642-0100 (General Vegetation Retention Prescription for Type F Streams)(11) and 629-642-0400 (General Vegetation Retention Prescription for Type D and Type N Streams)(12).

(4)

An operator may propose a plan for an alternate practice to meet the purpose of this rule. Alternate practices may include but are not limited to placing wood directly in the Type F or Type SSBT stream.

(5)

This rule takes effect on October 1, 2007.

Source: Rule 629-642-0500 — Leaving Green Trees and Snags along Small Type N Streams subject to Rapidly Moving Landslides, https://secure.­sos.­state.­or.­us/oard/view.­action?ruleNumber=629-642-0500.

Last Updated

Jun. 8, 2021

Rule 629-642-0500’s source at or​.us