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Branch River Infiltration Gallery
Client: Manawa Energy
Collaborators: Fulton Hogan Civil
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(Taylors partnered with Fulton Hogan Civil as the Concrete construction subcontractor)
Taylors were contracted to construct the Branch River Intake enhancement at the Branch River Hydro Electric Power Scheme. The work involved the construction of an intake gallery system under the river bed upstream from the existing weir and intake.
Key Project Challenges
● The installation of large 2.5m HDPE pipes and a new transition to the existing canal.
● Installation of the infiltration gallery and concrete structure below the river bed.
● Hydro Scheme shutdown required to complete the works.
Key Achievements
The infiltration gallery consisted of a precast concrete box structure with stainless steel mesh screens perpendicular to the concrete. The works involved a shutdown of the power scheme to allow the in-river works to be completed. Works also included control gates and commissioning, significant earthworks for the HDPE pipe, riprap, flood management, river diversion works, pumping, crushing and screening of all aggregates on site, and temporary works design.
