Archives: COAs

This COA includes much of Steens Mountain’s southwestern flank before moving north and skirting along the edge of Malheur National Wildlife Refuge and then east into the northern Steens Mountain uplands and High Lava Plains.

Includes the Sprague River and its surrounding habitat.

Includes the mainstem John Day River and surrounding high quality fish and wildlife habitat. Southern part of area begins near Silvies River and continues north to the confluence near the town of Kimberly.

Located in the middle of the ecoregion, this COA follows the windy course of the South Umpqua and many of its tributaries. Area boundaries near the towns of Roseburg, Winston, Dillard, Riddle, and Tiller

At the southern edge of the ecoregion, adjacent to several COAs and slightly west of the town of Burns

Relatively large (222 sq mi) area located within the Coast Range near the Rogue River-Siskiyou Forest and immediately adjacent to the Sixes River-Elk River COA

The eastern edge of this COA follows the Oregon/Idaho border from the Jordan Valley area south to the North Fork Owyhee River. It then moves west and north into the Owyhee Canyon, and includes the Spring Creek watershed and the Oregon portion of the Soldier Creek watershed. Finally, the COA covers most of Antelope Reservoir …

This area is a transition zone at the nexus of three ecoregions and as a results has a high diversity of species in unique assemblages.

Smith-Bybee Lakes is located north of Portland, adjacent to the confluence of the Willamette and Columbia Rivers. The Columbia Slough flows out of Fairview Lake north of the City of Fairview, westward through a series of regulated levees to Bybee Lake. Area includes the former St. Johns landfill.

This area contains much of the Coast Range’s Oak Woodlands and is potential habitat for Western Snowy Plover. It is a key corridor for migrating birds and has high plant and animal diversity.