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Oroville Dam Emergency Spillway Recovery

© DWR
© Kiewit
© Kiewit
© Kiewit
© Kiewit

Ninyo & Moore provided upwards of 50 lab and field technicians and special inspectors for this major reconstruction project. Two Ninyo & Moore on-site laboratories were mobilized to facilitate adequate and timely testing of the construction materials. In 2020, the DWR was recognized by the American Society of Civil Engineers with the Outstanding Projects and Leaders (OPAL) Award for their efforts on the Oroville Spillways Reconstruction Project.

Project Highlights:

  • Special Inspection
  • Materials Testing
  • Emergency Reconstruction of Existing Spillway
  • Observation/Documentation of 7,000 Drilled Anchor Locations
  • Involved 1 Million Cubic Yards of Roller Compacted Concrete and 500,000 Cubic Yards of Structural Concrete
  • Two N&M Onsite Mobile Laboratories
  • 50 N&M Field and Laboratory Technicians/Special Inspectors

Ninyo & Moore provided special inspection and materials testing services for the Oroville Emergency Spillway Recovery project. During the winter rains of 2016 and 2017, the existing spillway had dangerously eroded and been compromised causing a significant hazard for the area residents. The California Department of Water Resources (DWR) contracted with Kiewit Construction to completely rebuild the spillway as well as ancillary roadways and parking areas around the dam between 2017 and 2020. Testing included laboratory and field sampling of the concrete, lab testing of the aggregates and various testing of miscellaneous structural backfill and placement of Roller Compacted Concrete. Special inspections were performed by Ninyo & Moore’s ICC inspectors during the construction of the structural concrete elements for the new spillway and asphalt testing for the roadways and parking areas.

Ninyo & Moore is excited to see the reconstructed spillway in action! We’re proud of our team’s efforts to support #constructionmaterials services for this critical emergency project. 

Project Details

Client:

State of California Department of Water Resources c/o Kiewit Infrastructure West

Location:

Oroville, California

Client Testimonials

Paul Brown
"For over 25 years, Ninyo & Moore has performed in an outstanding manner on SDUPD as-needed environmental consulting services… Among Ninyo & Moore’s major attributes are a strong understanding of public sector client needs, innovative technical solutions, detailed understanding of regulations, and a proactive, professional relationship with regulators and consultants in the region."
Paul Brown
Program Manager
Environmental San Diego Unified Port District
Michael Grossman, P.E.
"I wanted to personally congratulate you and your team on wrapping up an extremely complex geotechnical project... The Bureau of Engineering, site soils conditions, and complex/revised structural system did not make for an easy scope of services… When faced with adversity your team was up to the task. It worked through a tough re-design/compressed time line, difficult series of approvals, and persevered…"
Michael Grossman, P.E.
Managing Director
AvAirPros: Milestone for Terminal 1.5 at Los Angeles International Airport (LAX)
Glenn Young
"Thank you for the incredible value, service, quality and impact… We are so appreciative of your commitment, expertise and experience in preparing plans and reports, obtaining superb field contracting services and providing professional field work. You are the best of the best."
Glenn Young
California Department of Resource and Recycling
Mark D. Claussen, PE
"Services provided include hazardous material investigation and documentation; geotechnical evaluation, testing and observation; and, special inspections and testing services. …I highly recommend Ninyo & Moore for all these services to any government agency tasked with the public safety, and providing timely and professional data to support both project schedule and budget development."
Mark D. Claussen, PE
Bond Program Manager
Southwestern Community College
Mark Stapledon
"Ninyo & Moore’s team is responsive, collaborative, and technically knowledgeable… I highly recommend Ninyo & Moore for these services to any other school district due to their excellent service, technical abilities, timely response to any request, and ability to support our schedules and budgets."
Mark Stapledon
Construction Management Supervisor
San Diego Unified School District
Mark Law
"Ninyo & Moore’s staff responded to the City’s needs and worked closely with our Capital Improvement Division to ensure cost effective recommendations and services. Ninyo & Moore’s team services are professional, client oriented, and provide quality reports."
Mark Law
Project Manager
City of Missouri City
Kay Khadem, CCM, PMP, LEED ®AP
"I wanted to take the time to thank you for the service your company provided to ours. We sincerely appreciate your customer service, how you’re always available to handle challenging issues, the excellent work you have demonstrated on every project, and the professional way you conduct business."
Kay Khadem, CCM, PMP, LEED ®AP
Senior Project Manager
Santa Monica-Malibu Unified School District
Kevin Huber
"Ninyo & Moore’s consultants have been efficient and extremely responsive and have demonstrated excellent communication skills and quality of work. I am pleased with the value of Ninyo & Moore’s services and am happy to refer them to my associates and other entities in need of their services. We would highly recommend using Ninyo & Moore for any of their services…"
Kevin Huber
Executive Director
Cooperative Strategies

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