[Ray76]

I don’t know if a link to this doc has been posted yet, but it mentions “cyclopean check dams”

https://www.ferc.gov/industries/hydropower/safety/projects/oroville/03-17-17.pdf

[Repeal The 17th]

Thanks!
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“Additional aspects of the short-term mitigation consist of the cyclopean backfill
placed downstream of the approximately 1,000-ft-long monolithic ogee weir section.
The weakest point in this plan occurs at the downstream end of the armoring where
all flows are directed and become channelized. To this end, DWR has placed small,
3-ft-high cyclopean check dams to slow the flow in these areas and control the
gradient. The knickpoints in these channels downstream of the check dams could be
problematic should future flows occur.
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9
[This displays as page 5 of 16; the physical page number is 3]

[Repeal The 17th]

Googling up images for cyclopean you see things like this:

But it sounds like they are actually talking about
the boulders that they are embedding in shot-crete.