[EarthResearcher333]

ES channel dubbed "Oregon Gulch" - Large Concrete pipes laid to handle ES flows @ earthen bridge - Feather river

DWR is emplacing three large concrete pipes in the channel carved by the first emergency spillway flow near the junction at the Feather River. A large earthen bridge has been in use for the excavation process to deposit the river dredged materials. These concrete pipes will allow a volume of waterflow to pass under the rebuild of the earthen bridge. Not sure if the combined flow volume capacity of these pipes are intended for the spill volume in a potential temporary re-use of the spillway (i.e. enough for 30,000 cfs as noted in the recent BOC reports?).

Existing earthen bridge excavated to emplace 3 large concrete pipes. Pipes in the channel eroded by the first emergency spillway flow. Channel dubbed "Oregon Gulch". Bridge facilitates access for reconstruction work & to massive debris pile side of the bridge.

[KC Burke]

Those three pipes have got to be a temporary item. There is so much area above the pipes in-flow area that is not gunite or lined in any manner that the pipes would silt in with earth, rock and debris during an emergency overflow usage. Sure, first usage, they will conduct a lot of water based upon their size, but the first usage would probably leave them half full of debris cutting their capacity by 50% off the bat.

[meyer]

“Oregon Gulch” - because they didn’t want it to be named “Croyle Canyon”. :)

Maybe the ought to run those large (6 foot diameter?) pipes all the way up to the dike and install some big valves at the top so that, instead of eroding more of the hillside, they can actually spill a few thousand CFS through the pipes to the river below.

Stated half-humerously. :)

[EarthResearcher333]

Correction: Oregon Gulch & bridge is further downstream where the 3 large pipes are being installed - Emergency Spillway Gulch re-opened for naming

I wasn't able to reconcile all of the photographic angles of the 3 pipe emplacements to the Emergency Spillway erosion channel. Doing more investigation I found that the real location of the Oregon Gulch is further down stream.

This means that the bidding for naming the Emergency Spillway Gulch is back on.

(note: this also makes sense for the 3 pipe capacity volume. 3 pipe design fits better with the Oregon Gulch capacity than what the Emergency Spillway flow could create (even if temporary).

[Jim W N]

Why “Oregon Gulch” I wonder. What’s Oregon got to do with it? Maybe trying to deflect a little bit.

How about “Glitch Gulch”? “Head for the Hills Gulch”? Nah.