Treasure Valley, Valley region between Vale and Boise, United States.
Treasure Valley is a region spanning southwestern Idaho and eastern Oregon, containing five rivers that flow into the Snake River drainage system. The valley includes Idaho's three largest cities—Boise, Nampa, and Meridian—which together account for roughly two-fifths of the state's population.
The region received its current name in 1959 from Pete Olesen, replacing its previous designation as the Lower Snake River Valley. This renaming marked a shift in how the area defined itself as it grew in economic importance.
The valley is home to the largest concentration of Basque people outside Europe, with a community that has shaped local traditions and celebrations for generations. You can experience this heritage through restaurants, festivals, and cultural centers throughout the area.
The valley has a continental climate with hot summers and cold winters, making the warmer months the best time to explore. The three main cities are relatively close together and easy to reach, allowing visitors to see multiple places during a single visit.
The Owyhee Dam supplies water across the valley, enabling farming on thousands of acres that would otherwise be dry desert. This irrigation project from the 1900s transformed the region's settlement patterns and made its agricultural economy possible.
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