Originally Posted by yesimapirate
This past Saturday we definitely saw an object sticking straight up out of one of the diversion dams after the canyon and before the big ranch. It was river left about 1/3 of the way out from the left shore. We didn't stop to investigate, but it was vertical and had been there long enough for some river schmegma to pile up against it. Slightly round in shape, and was visible enough (barely) from above the dam that I was able to avoid it.
I'm not posting to scare anyone off from the section. I just felt it was worth noting. And I'm kicking myself for not trying to do something more about it while we were there.
Yesimapirate, is the dam location you describe upstream or downstream from Spring Creek bridge?
If upstream from SC bridge, there are only two diversion dams just downstream from the canyon's lower end "Wall" whitewater, the Upper dam (left pic) and Lower dam (right pic) in post #33. There's another diversion dam a few hundred yards downstream of Spring Creek bridge of which I also may have a pic (I have photo'd a bunch of pics from GM dam down to the confluence for scenery and documentation purposes).
Having a potentially dangerous situation, discovery, removal and/or clear pics are needed to resolve this. According to the original event's date and the following posts' dates combined with the historical flow data on the gauge, the flows were all around 700-740 or so (confirm), the stream levels are close to each other so, to get a really good pic or removal, somebody needs to boat, check and photo/video after, say, November 1 or so when the flows are historically reduced for the end of the growing season.