Other Damning Report on the Damn Dam at Oroville

20 05 2019

UC Berkeley – Center for Catastrophic Risk Management

Root Causes Analyses of the Oroville Dam Gated Spillway Failures and Other Developments
By Robert G. Bea and Tony Johnson

https://drive.google.com/file/d/0Bz1I1mIutSEnbFJuVUJZWWNNVlU/view

ALT. LINKhttps://flyingcuttlefish.files.wordpress.com/2019/05/oroville-root-causes.pdf

P. 90, Appendix B, gets to the root causes of the 2017 debacle.

[CLICK IMAGE FOR FULL SIZE]

A report summary: Bob Bea Takes Us on a Deep Dive Through His Dire Oroville Report
By Glen Martin

 

LINK – https://www.youtube.com/watch?v=tmE0lI6xI7A

Earlier Posts –

Damning Gov’t. Report on the Damn Dam at Oroville

– has the FERC Report on Oroville dam

Scott Cahill Breaks Silence on Oroville Dam Fragility

Good reading material while we wait for the spillway cams to return to service and the real water data to be reported … – FC


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13 responses

20 05 2019
flyingcuttlefish

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20 05 2019
flyingcuttlefish

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20 05 2019
20 05 2019
flyingcuttlefish

OK –

I am giving this its own post …. lots of traffic on this topic here at FC ….

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21 05 2019
flyingcuttlefish

LOTS from this report shown here:

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21 05 2019
flyingcuttlefish

Featured in the above video is this –
Utah State University Water Research Laboratory Oroville Scale Model

Here is more on the model –

Fox 13 tv news (2017) USU constructs giant model of failed dam – has video
https://fox13now.com/2017/06/16/usu-constructs-giant-model-of-failed-dam/

Utah State U. – Utah Water Research Lab Team Constructs Scale Model of Oroville Spillway
https://www.usu.edu/today/index.cfm?id=56835

. . . more –
https://uwrl.usu.edu/hydraulics/hydraulic-modeling

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22 05 2019
flyingcuttlefish

REPORT:
Seismic signature of turbulence during the 2017 Oroville Dam spillway erosion crisis
https://www.researchgate.net/publication/322212934_Seismic_signature_of_turbulence_during_the_2017_Oroville_Dam_spillway_erosion_crisis

“Knowing the location of large-scale turbulent eddies during catastrophic flooding events improves predictions of erosive scour. The erosion damage to the Oroville Dam flood control spillway in early 2017 is an example of the erosive power of turbulent flow. During this event, a defect in the simple concrete channel quickly eroded into a chasm 47 meters deep.”

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23 05 2019
23 05 2019
flyingcuttlefish

other good document with good diagrams –
Free REpublic discussions
https://drive.google.com/file/d/0Bz1I1mIutSEnZ1BDXzAwZS12cDA/view

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23 05 2019
flyingcuttlefish

Page 43:
“DWR/DSOD seemingly “Hid” information of a “water vortex” (i.e. water induced flow formation) above the ground in front of the emergency spillway. This “water vortex” was discovered in a FERC/DWR database document that was NOT mentioned or hinted in the publicly released DWR/DSOD Inspection report. “

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29 05 2019
flyingcuttlefish

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6 06 2019
flyingcuttlefish

This report is quoted in a news article –
DWR ENGINEERING REPORT 5/1/2008 – Gate No. 4 Assessment and Main Seal Replacement

https://www.catholic.org/news/green/story.php?id=75205

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29 06 2019
Reminding Oroville dam operators of the California Records Law | flying cuttlefish picayune

[…] (post 9-11) we don’t think covers any repair records dealing with the spillway. With shoddy work done out of compliance with FERC regulations who needs […]

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