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  1. sushi

    Oroville Dam Spillway Failure

    Fifth, each one of those workers will likely have family, friends, co-workers, and future work locations, downstream in the flood zone. I have worked in these type of environments and these are typically tight knit crews that look out for one another and have a strong sense of moral integrity ...
  2. sushi

    Oroville Dam Spillway Failure

    It is in this post: https://www.metabunk.org/oroville-dam-drains-in-the-spillway-walls-how-do-they-work.t8407/page-4#post-202279
  3. sushi

    Oroville Dam Spillway Failure

    Thanks for the data whoosh. My reading of that graph is that the FCS spillway flowed for a single time in the period of March to May 2016 and then sat unused until the recent event.
  4. sushi

    Oroville Dam Spillway Failure

    Thanks Boilermaker. MIck - I just checked the date at the Terraserver site. The date given is confirmed as May 2nd 2016. According to my timeline the first flow after a few years of drought was March 24th 2016: MARCH 14 2016 LAKE OROVILLE RISING...
  5. sushi

    Oroville Dam Spillway Failure

    Does anyone know the date of this image? This is apparently a product preview provided by a satellite image service. Can the original poster provide the date upon which the satellite performed the actual capture? Did a Google search on site:metabunk.org and found lots of interesting images...
  6. sushi

    Oroville Dam Spillway Failure

    Instrumentation? Subsurface sensor? EDIT Cancelled edit. As for the tree being toast, I think it is just migrating out of Dodge as fast as it can go:
  7. sushi

    Oroville Dam Spillway Failure

    Good overhead of the armored area below the auxiliary spillway. Only a single truck left. Looks like they are still working on that very tough fig tree. o_O Screen capture from the post by Inspector Clouseau: https://www.metabunk.org/oroville-dam-spillway-failure.t8381/page-34#post-202204
  8. sushi

    Oroville Dam Spillway Failure

    As a confirmed Pareidoliac, I knew I had seen that tree somewhere before. Finally found it: Looks like they grow very tough fig trees in California. Image contained in dierdre's post: https://www.metabunk.org/pre-failure-oroville-dam-spillway-historical-images.t8410/#post-201255
  9. sushi

    Oroville Dam Drains in The Spillway Walls - How Do They Work?

    Great find. I was looking at that and trying to decipher what it represented. What I do not yet understand: 1) The vertical dimension form top of slab to the C/L of the dowel is indicated as 1'-0" There is no dimension given for the depth of slab from C/L of the dowel to the bottom of the...
  10. sushi

    Oroville Dam Drains in The Spillway Walls - How Do They Work?

    How do you know this? If you review the photographic evidence in the thread you will find little basis for your assertions.
  11. sushi

    Oroville Dam Drains in The Spillway Walls - How Do They Work?

    In this image it is evident that the "grade beam" exhibited significant variation in width. The image also shows what appear to be bolt holes which would normally be found well set back from the outer face of the beam. In the image the bolts, or other form of reinforcement is completely missing...
  12. sushi

    Oroville Dam Main Spillway Waterfall Erosion Watch

    The post https://www.metabunk.org/oroville-dam-spillway-failure.t8381/page-33#post-202055 contains another of Alan Kuertz' videos of the FCS spillway. Source: https://www.youtube.com/watch?v=JB8ssAI6lF8 Just around the 11:40 mark when Alan begins to talk about the wild turkeys, he pans the...
  13. sushi

    Oroville Dam Drains in The Spillway Walls - How Do They Work?

    This image suggests significant variation in the depth of the concrete pour. If correct, this has implications for the structural rigidity and load bearing capacity of the spillway slabs.
  14. sushi

    Oroville Dam Spillway Failure

    I am a geologic dweeb. Marine and aeronautical charts are not a problem. But when it comes to looking at rock maps, I am a total fish out of water. In trying to understand the geology of the site I have gone back through the thread looking for relevant information. This image is from a post by...
  15. sushi

    Oroville Dam Spillway Failure

    The spacing between the fence posts on the spillway sidewalls is actually 10' between posts. There is an entire parallel thread looking at these details. EDIT added the link to the thread https://www.metabunk.org/oroville-dam-drains-in-the-spillway-walls-how-do-they-work.t8407/
  16. sushi

    Oroville Dam Spillway Failure

    I think it is important to remind ourselves that at the time this dam was designed cigarettes were good for you, cars did not contain seat belts, the dash was made of stamped sheet metal, the steering column had no padding or collapse mechanism to prevent it spearing the driver's chest, and...
  17. sushi

    Oroville Dam Drains in The Spillway Walls - How Do They Work?

    I love counter intuitive evidence. There is another deviation from the enginnering specs found in FCS PLAN zh9californiastatew2003calirich_0152a.jpg The above FCS PLAN suggests that from centreline to the sidewall there should be 4 slabs each 20 feet wide then a fill in slab of 9.33 feet...
  18. sushi

    Oroville Watershed Weather Forecast, Lake Level and Inflow Calculations

    What a difference 10 hours makes. EDIT I based the interval on the time of your posting as the Generated date and time was not showing.
  19. sushi

    Oroville Dam Spillway Failure

    My background is in marine and offshore safety. When it comes to geology I am truly a true fish out of water. Would it be accurate to say the ground under the entire site demonstrates a geologic heterogeneity which renders it not readily understandable? The Wikipedia entry on Ophiolite makes...
  20. sushi

    Oroville Dam Drains in The Spillway Walls - How Do They Work?

    NOTES 1. See A-3B5-4 for concrete notes See A-3B6-1 for general reinforcement notes 2. See A-3K1-7 for excavation details 3. Sections shown on this sheet are typical showing HANDLING of different situations 4. Formed wall contr[ACTION JOINTS] and [SCORED?] INVERT CONTRACTION JOINTS not shown...
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