Supreme Court Denies Timber Industry Requests to Review Expansion of Cascade-Siskiyou National Monument

Decision ensures that southwest Oregon rivers, fish, and wildlife remain protected


Jackson Chiappinelli,, 585-402-2005


The U.S. Supreme Court today denied requests by the timber industry to review and potentially reverse the expansion of the Cascade-Siskiyou National Monument in southwest Oregon.

In response, Kristen Boyles, Earthjustice, and Susan Jane Brown, Silvix Resources (attorneys for conservation groups defending the Monument) issued the following statement:

“Two federal appellate courts previously ruled against the timber companies that attacked the Cascade-Siskiyou National Monument and its streams, fish, wildlife, and recreation.  Monument supporters have fought for decades to protect this special place, renowned for its remarkable biodiversity.  The Supreme Court’s order shuts down timber’s transparent greed.”


Originally designated in 2000 by President Clinton, Cascade-Siskiyou National Monument includes distinct ecoregions with a wide range of topography, climate, and geology, and is widely recognized as one of the most biologically diverse places in North America. It is an important ecological link for wildlife migration, genetic dispersal, and the process of evolution in the Pacific Northwest.

President Obama expanded the Monument in 2017 based on recommendations from numerous scientists and strong support from local residents, tribes, conservationists, local business leaders, hunters, anglers, local, state, and federal elected officials, and others, including both Oregon’s U.S. Senators and consecutive Governors.

The expanded Monument now consists of almost 114,000 acres of forest, meadow, and oak grasslands at the junction of the Cascade Range and the Siskiyou Mountains in southwestern Oregon and northwestern California.

A threatened Mardon skipper butterfly basks in the sun at Cascade-Siskiyou National Monument.
A threatened Mardon skipper butterfly basks in the sun at Cascade-Siskiyou National Monument. This butterfly is native to the Pacific Northwest region of North America and relies on specific grasses such as Idaho Fescue and Bluebunch Wheatgrass as host plants. The Mardon skipper is a species of conservation concern and its populations have been declining due to habitat loss and degradation. (Seth Coulter / BLM)

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