Dairy McKay Restoration Action Plan
The Dairy-McKay Sub-Basin covers approximately 147,895 acres draining the eastern side of the Coast Range Mountains. The sub-basin is bordered to the west by the Coast Range, north and east by the Tualatin Mountains, and south by the Chehalem Mountains.
The Dairy-McKay system is the largest sub-basin contributing to the Tualatin River, encompassing nearly one-third of the entire Tualatin River Basin. The Sub-Basin has been identified by the Tualatin River Watershed Council as a high-priority area for Upper Willamette River (UWR) steelhead spawning and rearing as well as for other native fish and wildlife. Many Tualatin River Basin partners have been active in restoration projects throughout the Sub-Basin.