Oroville Dam

The Oroville Dam is a large embankment dam on the Feather River in Northern California. It is the tallest dam in the United States, standing 770 feet high, and it forms Lake Oroville, the second-largest reservoir in California. The primary purposes of the dam are water supply, hydroelectric power generation, and flood control.

Construction and Builders

Construction Period: The construction of the Oroville Dam began in 1961 and was completed in 1968.

Primary Builder: The dam was built by the California Department of Water Resources (DWR) as part of the California State Water Project, a complex water management system designed to distribute water from the northern part of the state to the drier, more populous southern regions.

Key Features

1. Height and Volume: At 770 feet tall, it is the tallest dam in the U.S. and holds approximately 3.5 million acre-feet of water.
2. Hydroelectric Power: The dam's Edward Hyatt Powerplant generates up to 819 megawatts of electricity.
3. Flood Control: The dam helps manage floodwaters from the Feather River, protecting downstream communities.

Historical Context and Significance

The Oroville Dam was a major engineering feat of its time and remains a critical component of California's water infrastructure. Its construction required the relocation of roads and railroads and the creation of a new town for workers. The dam has faced challenges, notably the 2017 spillway incident that led to the evacuation of nearly 200,000 people due to concerns about potential structural failure.