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Close inspection of Mick West's photos in #59 shows that there has unequivocally been some loss of material from the scarp between Feb. 9 and Feb. 16, and that the mode of movement is geotechnical slumping, not just plain particle-by-particle erosion as in a standard head cut in a channel...

Stuart Little, I noticed that too. Simplistically, it would seem to indicate that the main source of the water that's flowing out of the drains is high up on the slope, and is running down under the spillway floor or along the outside of the side walls, or both. When that water gets to the...

Thank you CRM114! Exactly what I knew someone could contribute. It does seem like a lot of flow. Here's a screenshot from the DWR link provided above (http://pixel-ca-dwr.photoshelter.com/galleries/C0000OxvlgXg3yfg/G00003YCcmDTx48Y/I00000T6R7shWRQU/DK-Oro-Spillway-damage-4203-02-15-2017-jpg). I...

In post #43, samfriday asks Any other comments on the footage? . I do have one, more of a question for someone who is knowledgeable about engineering and/or the construction plans. I notice in Alan Kuentz's video, when he zooms out a bit, the spillway is visible in the right foreground, and you...

Some inferences of moderate validity about erosion prognosis might be drawn from examination of the vegetation in the high resolution photo provided above in post #32 by retired mech eng (https://www.metabunk.org/attachments/rx1hia2-jpg.24694/). I hope that link is correct. I draw also from...