The Fish Barrier in Marysville, California, is a crucial structure designed to regulate the flow of the Feather River and ensure water supply for irrigation purposes. Completed in 1964, this concrete gravity dam stands at a height of 61 feet and has a structural height of 91 feet. With a storage capacity of 580 acre-feet and a maximum discharge of 80,000 cubic feet per second, the Fish Barrier plays a vital role in managing water resources in Butte County.

Managed by the State of California and regulated by the Department of Water Resources and the Safety of Dams, the Fish Barrier undergoes regular inspections to ensure its safe operation. The dam's low hazard potential and moderate risk assessment indicate that it is well-maintained and poses minimal risk to surrounding areas. As a state-regulated structure, the Fish Barrier is equipped with an uncontrolled spillway that is 600 feet wide, allowing excess water to flow safely downstream without causing harm to the environment or nearby communities.

Located in a strategic position within the Feather River watershed, the Fish Barrier serves as a key component of California's water infrastructure. With its primary purpose being water supply, this dam not only supports irrigation activities but also contributes to the overall sustainability of the region's water resources. As water resource and climate enthusiasts, it is essential to recognize the importance of structures like the Fish Barrier in ensuring the efficient management and conservation of water for future generations.