John C. Boyle Dam, Removed hydroelectric dam site in Klamath County, Oregon, US

The John C. Boyle Dam was a concrete structure that stretched across the Klamath River and incorporated an earthen section designed for water storage and electricity generation. The facility included three spillway gates, fish screens, and a fish ladder that worked together to manage flow and protect aquatic life.

Built from 1956 to 1958, the dam was part of a broader hydroelectric project designed to power the region with renewable energy. In 2024, the structure was decommissioned and removed, marking a significant reversal in the region's approach to river management.

The dam's removal in 2024 marked a turning point in how the region views waterways, with communities embracing the restoration of the river and its natural processes. This shift reflected growing recognition that returning the river to its original state could benefit both local ecosystems and future generations.

The dam stood on the upper Klamath River about 12 miles (19 km) north of the California border, downstream of Keno. With the structure gone, the site is reached from Keno via local roads; the former reservoir and diversion works are no longer in place, so plan around the river corridor itself rather than a dam viewpoint.

The dam was originally called Big Bend before being renamed for John C. Boyle (1899–1979), chief engineer of the California Oregon Power Company, who designed nearly all of the Klamath Hydroelectric Project. Because it ran at peak times, water returned to the river only intermittently, leaving a "bathtub" ring on the banks below the turbines.