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NOR. CAL REGIONAL DINNER MEETING
Blue Prynt Restaurant
815 11th St.
Sacramento, CA 95814
USA
916.492.2969

View additional information#/id/i10791964
Tuesday, February 27, 2018, 6:00 PM - 8:30 PM PST
Category: Regional Dinner Meeting

Northern California Regional Dinner Meeting

Date & Time: Tuesday February 27, 2018, 6pm - 8:30pm

Oroville Spillway Damage & Repair

Presented by Holly Nichols, Department of Water Resources

On February 7, 2017, a hole formed in a portion of the concrete-lined spillway at Oroville Dam.  Continued operation of the gated spillway caused additional erosion and damage to the concrete structure.  The areas of deepest erosion occurred in portions of the spillway that were mapped during original construction as strongly weathered to decomposed amphibolite rock.  On February 12, 2017, during operation of the emergency spillway, rapid, deep headward erosion was observed in the northern portion of the unlined emergency spillway.  This presentation will discuss the geologic conditions that were understood at the site prior to construction, the geologic conditions that were documented during construction, the geologic exploration completed since the spillway failure, and the spillway reconstruction design, construction, and status.

Holly Nichols has been with the California Department of Water Resources since 2008, after working in the private sector for several years in Southern California.  She is currently a Senior Engineering Geologist in DWR’s Division of Engineering.  She has worked on a variety of water infrastructure design and construction projects including pipelines, canals, and dams throughout California’s State Water Project.  She received her B.S. in Geology from the University of Texas in Austin, and her M.S. in Geology from Washington State University, and is a licensed Engineering Geologist in California.  She has been AEG’s Sacramento Chapter Vice Chair for several years and has spent most of 2017 as the lead geologist for the Oroville Spillway Recovery efforts.

Please register early, registration will close 4-days prior to the event.

Cost: $45/CalGeo members, $60/non-members. Payment must be received in advance, no cash or checks accepted at the door. You may use the Invoice me option at check-out to print an invoice and submit payment via check.

Register Now!

Thank you to our generous sponsors, Tensar! Come and meet with Gene Weddle and Matthew Kennedy and enjoy a drink during dinner courtesy of Tensar.


Contact: Kelly Cabal, kelly@calgeo.org (949) 391-2436 with any questions.