Oroville Dam Repairs Top 1.1 Billion Dollars

Oroville Dam Spillway

November 1, 2018 is a public safety construction milestone to complete placement of all concrete on the main spillway. The Department of Water Resources says they will meet that deadline but other related work will continue past that date.

Main Spillway: The upper chute is 63% complete. The middle chute is 77% complete. Repair work on the dentates is 45% complete.

Emergency Spillway: Placement of roller-compacted concrete (RCC) on the southern half of the emergency spillway splashpad is 72% complete. The RCC buttress at the base of the emergency spillway will be built later this year. Work at the emergency spillway site is not dependent on the public safety construction milestone and will continue past November 1, 2018.

Other updates: Work continues on an underground transmission line project along Oro Dam Boulevard East between Glen Drive and Canyon Drive. One-way traffic controls are in place from 6 a.m. to 6 p.m. and will continue until the project is complete in mid-October.

Cost updates: As work continues to meet the November 1, 2018 public safety construction milestone to fully reconstruct the main spillway, DWR has updated its cost estimates. The current estimate for emergency response and reconstruction of the main and emergency spillways is $1.1 billion. Cost estimates are based on actual and projected work and may be adjusted further as work continues through completion of the project in 2019.

DWR will continue to submit expenditures to the Federal Emergency Management Agency (FEMA) for reimbursement. To date, FEMA has approved reimbursement of $87.4 million of the $116.5 million submitted by DWR.

Live video streams of the ongoing construction are available here.

More information is available at the DWR Oroville Spillway incident page.

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