Page - 84 - in Book of Full Papers - Symposium Hydro Engineering

REFERENCES [1] CROYLE, W., GUTIERREZ, D., ANDERSEN, M., LEDESMA, J., TAPIA, S., and BLACKETT, F. Oroville Dam Spillway Incident – Situation Development, Incident Response and Public Safety [2] NICHOLS, H., GRAY, M., HALL, C., KUTTEL, J., and CRADDOCK, T. Oroville Dam Spillway Incident – Geological and Geotechnical Investigations for Recovery Design Features [3] PANDEY, G., FORD, D., CRADDOCK, T., WHITE, M., FORTNER, M., LEAHIGH, J., ANDERSON, M. Oroville Dam Emergency Response and Spillway Restoration – Hydrologic and Hydraulic Engineering Activities to Inform Operation and Design SUMMARY Following the February 7, 2017, Oroville Dam Spillway Incident, DWR formed the Oroville Emergency Recovery (OER) team to restore spillway capacity in advance of the 2017-2018 Winter Flood Season. The team worked under considerable pressure during the ongoing incident to quickly develop recovery plans for the two major areas of damage – the Flood Control Spillway and the Emergency Spillway. Using an expedited process that included integral coordination with state and federal dam safety regulators, a recovery design was developed and construction contracts were issued. The 2017 expedited design and construction processes used in the urgent restoration of spillway capacity were unprecedented, and were only successful because of the commitment of everyone involved to work together. KEYWORDS analysis, apron, buttress, concrete, construction, dam, design, drainage, emergency spillway, erosion, excavation, flood, flood control, flood storage, foundation treatment, FCO spillway chute, geology, hydraulic model, Oroville Dam, secant pile, reservoir operation, roller compacted concrete, scour protection, spillway, uncontrolled spillway, weathered rock. 84