DPS STATUS AND DESCRIPTION:  Listed as a threatened species on March 25, 1999; threatened status reaffirmed on January 5, 2006.  The DPS includes all naturally spawned anadromous O. mykiss (steelhead) populations below natural and manmade impassable barriers in the Willamette River, Oregon, and its tributaries upstream from Willamette Falls to the Calapooia River (inclusive). CRITICAL HABITAT STATUS: A final designation was published on September 2, 2005 (9.7 Mb PDF), with an effective date of January 2, 2006. PROTECTIVE REGULATIONS: Final revised protective regulations were issued for this DPS on June 28, 2005. STATUS REVIEWS & UPDATES:  Click here to view a list. FEDERAL REGISTER NOTICES: Click here to view a list. MAPS & GIS DATA: Click here to view.