Crane with gripper attachment used to extract Logs and Wood debris collecting at the Spillway Inlet. Waterflow directed this floating debris and has been threatening to be pulled-in and flow through the Radial Gate Inlet structure when reservoir levels drop to the concrete curved Gate Inlet Chutes. This could cause damage to the Radial Gate metal skin plates in addition to the risk of debris jamming in the Radial Gate side seams. The force of a passed through log, then "jumping" from the outlet tail "fins" could also risk an unwanted impact on the spillway concrete chute. Good idea to eliminate these risks. Not sure "item" .I suspect the normal floating log boom is either damaged or may be unable to handle the volume and size of the logs in recent runoffs.
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.