Logan River catchment early works - Bromelton offstream storage
Client: Queensland Water Infrastructure
Location: Queensland, Australia
Date: March 2007 – May 2008
Designing a pump station, pipeline and embankment dam to improve water storage for safe, reliable and sustainable water supply in a rapidly growing region
Background
The Bromelton offstream storage (BOS) is part of a region-wide, long-term water supply scheme developed in response to drought which severely affected water supplies in Brisbane and surrounds. This development is near an area of rapid urban and industrial growth and connects areas with an oversupply of water to areas lacking water via a network of storages and potable bulk water pipelines.
The BOS facility comprises a pump station, water transfer pipeline and offstream storage dam. With Cedar Grove Weir and the Wyaralong Dam, it delivers additional capacity to improve reliability of water supply in drought.
Solution
Entura was part of the Water Infrastructure Solutions Alliance engaged by Queensland Water Infrastructure to design, procure and construct the Logan River catchment early works.
A submersible pump station connects to a water transfer pipeline to the storage dam, 1500 m in length and 1200 mm in diameter, and also connected to the pipeline is an 800mm diameter control valve to release water from the storage back to the river.
The off-stream storage has a capacity of 8200 ML at full supply level. The homogeneous embankment is 4100 m long and 9.5 m high at its maximum section, and incorporates an innovative filter system and sub-soil drains to improve drainage capacity.
Outcome
The design and construction of BOS was fast-tracked and was commissioned ahead of schedule ready to service the critical water needs of south-east Queensland. Bromelton off-stream storage together with the Cedar Grove Weir and Wyaralong Dam will yield an extra 26 000 ML per year to south-east Queensland.
