The Wintu are Native Americans who live in what is now Northern California. They are part of a loose association of peoples known collectively as the Wintun. There are three major groups that make up the Wintu speaking people. The Wintu, Nomlaki, and Patwin. The Wintu language is part of the Penutian language family.

The Trinity River is a major river in northwestern California in the United States and is the principal tributary of the Klamath River. The Trinity flows for 165 miles (266 km) through the Klamath Mountains and Coast Ranges, with a watershed area of nearly 3,000 square miles (7,800 km2) in Trinity and Humboldt Counties. Designated a National Wild and Scenic River, along most of its course the Trinity flows swiftly through tight canyons and mountain meadows.