Willamette Basin

• The Willamette basin contains approximately 70 percent of Oregon's population.
• It is bound on the west by the Coast Range and on the east by the Cascade Range, encompassing the Willamette Valley.
• Large dams on most Cascade tributaries control valley flooding, but significantly alter fish passage and stream flow throughout the basin.
• The dominate economies are a high tech, diverse agricultural production forestry and wood products industries.