Copco Lake, an artificial reservoir on the Klamath River in Siskiyou County, California, no longer exists for paddling. The lake was drained in January 2024 as part of the Klamath River Renewal Project, with the Copco Number 1 Dam scheduled for complete removal by the end of 2024.

Prior to its draining, Copco Lake offered opportunities for kayaking, fishing, swimming, windsurfing, power boating, and sailing. The surrounding area provided facilities for picnicking and hiking. However, paddlers should be aware that during summer months, the lake often experienced large blooms of toxic cyanobacteria, rendering the water unsafe for human contact or consumption.

The lake's creation dates back to 1922 when the California Oregon Power Company constructed the Copco Number 1 Dam. This dam, 415 feet long and 132 feet high, impounded the lake's waters as part of the Klamath River Hydroelectric Project.

Wildlife enthusiasts once observed various species around the lake, including deer, ducks, geese, blue herons, and pelicans. The lake also served as a refuge for migratory birds. However, the recent draining has significantly altered the ecosystem, with concerns raised about the impact on local wildlife.

The dam removal project, aimed at restoring the Klamath River's natural flow, has dramatically changed the landscape. Where the lake once stood, vast expanses of mud now dominate the scenery. Restoration efforts are underway, with crews actively planting native vegetation along the former shoreline.

Given the ongoing changes and potential safety hazards in the area, paddling is no longer possible or advisable at the former Copco Lake site. Those interested in the area's transformation should consult local authorities for current conditions and access restrictions.