Page - 86 - in Book of Full Papers - Symposium Hydro Engineering

COMMISSION INTERNATIONALE DES GRANDS BARRAGES ------- VINGT TROISIÈME CONGRÈS DES GRANDS BARRAGES L’Autriche, juillet 2018 ------- OROVILLE DAM SPILLWAY INCIDENT- ROLLER COMPACTED CONCRETE INFLUENCES ON RECOVERY STRUCTURAL DESIGN FEATURES*1 Jesse Dillon Structures Design Lead, State of California, Department of Water Resources Michael Rogers RCC Design Lead, Stantec Consulting Services, Inc. Ted Craddock Project Manager, State of California, Department of Water Resources Mike Driller Construction Design Lead, State of California, Department of Water Resources Mark Strahm Engineer-Bryte Soils & Concrete Lab, State of California, Department of Water Resources Steve Friesen Structural Designer, State of California, Department of Water Resources UNITED STATES OF AMERICA 1. INTRODUCTION Oroville Dam is located on the Feather River in northern California (USA). At 234.7 m (770-ft) tall, this earth embankment is the tallest dam in the United States. With its 4.3 billion m3 (3.5 million acre-feet) of storage, Lake Oroville is the second largest reservoir in California, supplying water to cities as far south as Los Angeles. The Oroville Dam, reservoir (Lake Oroville), and hydropower plant facility is the flagship of the State Water Project (SWP), which is owned and operated by the State of California, Department of Water Resources (DWR). The 2016-2017 Winter Storms brought record breaking precipitation to the Northern California Sierra mountains including the Feather River watershed. On February 7, 2017, the Oroville Dam’s 54.5 m (179-ft) wide Flood Control Outlet (FCO) Spillway chute (Fig. 1) was * INCIDENT DE DRAINAGE DE BARRAGE D'OROVILLE - INFLUENCES DE BÉTON COMPACTÉES PAR ROULEAU SUR LES CARACTÉRISTIQUES DE CONCEPTION STRUCTURALE DE RÉCUPÉRATION 86