The California-Oregon border’s largest dam removal project, the Klamath River, is set to finish next year.

Over the next decade, workers will plant and monitor nearly 17 billion seeds to return the river and surrounding terrain to its pre-dam state.

The project is part of a national movement to restore habitat for fish and other wildlife, with over 2,000 dams demolished in the U.S. since February.

The project will empty three reservoirs across 3.5 square miles (9 square kilometers) at the California-Oregon border, exposing land to sunshine for the first time in over a century.

Native American tribes have hand-gathered seeds and shipped them to nurseries for five years to spread along the newly untamed river.

Helicopters will drop hundreds of thousands of trees, shrubs, and fish-friendly tree roots along the riverbank.

The project is funded by taxpayers and PacifiCorps ratepayers.

The Siskiyou County Water Users Association filed a federal lawsuit against the demolition, but it has yet to stop the demolition.

The project will involve plummeting lakes and planting wooly sunflower, Idaho fescue, and Blue bunch wheat grass seeds.

The Elwha River, which runs from Olympic National Park into the Strait of Juan de Fuca, had the greatest dam removal project, with salmon recolonizing areas they hadn’t seen in over a century within months of the dams being removed.