Battle Creek Salmon and Steelhead Restoration Project 1

July 2017 Construction Photos

North Battle Creek Feeder Diversion Dam: The Contractor is utilizing a 130-ton crane to hoist the wooden piers into position to support the diversion pipes.

North Battle Creek Feeder Diversion Dam: The Contractor is fusion welding two 50’ length sections of the 30” diameter high density polyethylene (HDPE) pipe that will be used for the creek diversion system.

Battle Creek Salmon and Steelhead Restoration Project 2

North Battle Creek Feeder Diversion Dam: A close-up view of the fusion welding of two 50’ length sections of the 30” diameter HDPE pipe to create 100’ length section.

North Battle Creek Feeder Diversion Dam: The Contractor is placing 50 lb sand bags into the creek bed for construction of the upstream cofferdam.

Battle Creek Salmon and Steelhead Restoration Project 3

North Battle Creek Feeder Diversion Dam: The first section of the 30” diameter HDPE pipe used to divert water upstream of the cofferdam into the canal flume is being hoisted into place.

North Battle Creek Feeder Diversion Dam: The Contractor is constructing temporary slide gates for the 30” diameter HDPE diversion pipes.

Battle Creek Salmon and Steelhead Restoration Project 4

North Battle Creek Feeder Diversion Dam: The Contractor is using all-terrain forklifts to move a 100’ length section of the 30” diameter HDPE pipe down to the creek for installation of the diversion system.

North Battle Creek Feeder Diversion Dam: The Contractor is installing diversion pipes on the right side of the creek.

Battle Creek Salmon and Steelhead Restoration Project 5

North Battle Creek Feeder Diversion Dam: The Contractor is constructing a temporary wooden energy dissipater at the transition between the diversion pipe into the canal flume.

North Battle Creek Feeder Diversion Dam: The above photo shows the flow diversion into the wooden energy dissipater.

Battle Creek Salmon and Steelhead Restoration Project 6

North Battle Creek Feeder Diversion Dam: The Contractor is drilling holes for the epoxy grouted dowels along the 74’ fish screen wall extension.

North Battle Creek Feeder Diversion Dam: The Contractor is using combi-hammers to chip/bush the surface of the fish screen wall and to create a concrete surface profile for the new extension.

Battle Creek Salmon and Steelhead Restoration Project 7

North Battle Creek Feeder Diversion Dam: The above template chips were used to determine compliance of the concrete surface profile (CSP 5 or greater) created by the bush hammering.

North Battle Creek Feeder Diversion Dam: The Contractor is saw cutting along the face of the new fish screen wall extension.

Battle Creek Salmon and Steelhead Restoration Project 8

North Battle Creek Feeder Diversion Dam: The Contractor is chipping out concrete for the construction of a new sluice gate at the downstream end of the fish screen bay.

North Battle Creek Feeder Diversion Dam: The Contractor is installing epoxy grouted dowels along the new 74’ fish screen wall extension.