Forest Service Considers Rule Change That Prevented Logging Of Some Northwest Old-Growth Trees

OSU scientists detect a tagged hermit warbler in the canopy of an old growth grove in the Oregon Cascades. Learning how the small song birds travel over the course of a day could provide insight into why bird populations are doing well in old growth forests while declining in other warming landscapes of the Pacific Northwest. CREDIT: GREG DAVIS
File photo. OSU scientists detect a tagged hermit warbler in the canopy of an old growth grove in the Oregon Cascades. Learning how the small song birds travel over the course of a day could provide insight into why bird populations are doing well in old growth forests while declining in other warming landscapes of the Pacific Northwest. CREDIT: Greg Davis

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The U.S. Forest Service is considering changing a rule that prevents logging of large trees on national forestland in parts of Washington and Oregon. 

Federal officials say it’s an important update that could help tame large-scale wildfires. Conservation groups worry the amendment process has been rushed and could damage important forest habitat.

The land management plans, known as the “Eastside Screens,” came about in 1995 to protect old growth trees east of the Cascades. The rules were meant to be temporary. The Forest Service wants to amend a section of the policy called the “21-inch rule,” which prohibits harvesting trees that are greater than 21-inches in diameter.

Conservation groups say the provisions, though largely unknown, are “the most meaningful protections for large trees and old-growth” in Oregon.

“By keeping old-growth logging off the table for 25 years on public lands, these protections for wildlife habitat, clean water, and other values have kept the peace and created conditions for some level of agreement over forest management in the region,” Rob Klavins with Oregon Wild said.

While Klavins says his group isn’t opposed to removing individual trees at times, he says hastily removing the 21-inch rule would drastically weaken the Eastside Screens provisions, and thereby hurt old-growth forests.

Making Land Management Decisions

The amendment would apply to the Deschutes, Fremont-Winema, Malheur, Ochoco, Umatilla, and Wallowa-Whitman National Forests, which are primarily in Oregon with some sections in southeastern Washington. It wouldn’t apply to the portion of Washington’s Okanogan-Wenatchee National Forest that falls under the Eastside Screens management plan. The Colville National Forest, in northeastern Washington, recently removed the Eastside Screens provisions – including the 21-inch rule – from its forest plan.

Forestry groups say the blanket rules don’t help make wise land management decisions. Amending the 21-inch rule would lead to better management of individual stands, says Andy Geissler with the American Forest Resource Council.

“It should be done on a stand-by-stand basis. Using just one number for every stand out there, without actually looking at the stands, is just flawed. It’s using this absolute approach, and it just doesn’t work,” Geissler said.

Geissler says removing the 21-inch rule won’t drastically increase the amount of logging done on national forests, calling it an “incremental change.” But conservation groups aren’t convinced that’s the case.

The Forest Service says it’s trying to encourage a mix of different types of trees of all different sizes. That would help forests better withstand wildfires and drought, says spokesperson Stephen Baker.

“The ability to remove some 21-inch trees would help us manage for more resilient forests with species that are less likely to die in wildfires and other disturbances. It could also allow us to manage homogenous, high-density stands in a way that lowers the potential for large-scale forest die-offs from individual disturbances like a wildfire or an insect outbreak,” Baker wrote in an email.

Baker says the 21-inch rule has allowed fast-growing, shade tolerant species to thrive, such as grand firs. That means there are bigger trees in forests, but not necessarily older trees. He says those younger trees can out-comp