RCC Dam and Spillway Tracker

The first use of roller-compacted concrete (RCC) in the United States was in 1980 to construct an overtopping protection spillway for Ocoee Dam No. 2 in Tennessee to prevent deterioration of the existing timber crib dam structure. In 1982, the Willow Creek Dam in Oregon became the first all-RCC dam constructed in the world and served to protect the town of Heppner from recurrence of the dreadful flood of 1903 that claimed the lives of 251 people. Both Ocoee #2 and Willow Creek Dam are still serving their intended purposes today. Over the last four decades, hundreds of RCC dams and hydraulic structures have been constructed in the U.S. to provide the critical infrastructure we rely on for water supply, flood protection, hydropower energy, environmental protection and even recreation.

PCA has tracked the RCC overtopping protection spillways and RCC dams over 50 feet high constructed in the U.S. Select a state below to view constructed projects with key information for each including project size, design parameters and RCC mixture proportions.