Borumba Dam after the remediation works were completed on flood damage.
Borumba Dam after the remediation works were completed on flood damage. Contributed

Borumba Dam flood damage works completed

SEQWATER has repaired scouring and erosion at the toe of Borumba Dam in readiness for the summer months.

The repairs were required as a result of damage caused by the January 2011 floods.

The toe, made of rock, sits in front of the dam wall and almost 3,600 tonnes of rock was brought in to provide extra protection against erosion. Being so close to the waterway, Seqwater commissioned an environmental study before starting the works to ensure any possible affects were minimised.

The January 2011 floodwaters also deposited about 12,000 tonnes of gravel in the outlet channel downstream of the dam spillway.

The gravel has been cleared to improve outflows from the dam.

The remediation works began in May after the wet season to reduce the risk of outflows over the ungated spillway during construction.

The timing of the project also allowed for the works to be finished before the Christmas holidays so there would be no negative effect on the popular camping spot downstream of the dam.

Despite several construction days lost to wet weather and challenges experienced while moving water from one section of the plunge pool to another to allow for access, the works were completed in less than five months.

While every effort was made by the Seqwater project team and the contractor to reduce noise and disruption caused by the works, Seqwater said it appreciated and thanked those using the camping facilities downstream for their patience and understanding during the project.

Borumba Dam facts

  • Located on Yabba Creek near Imbil
  • Full supply capacity of 45,952 megalitres
  • Surface area of 480ha when full
  • Construction completed in 1963
  • Dam wall upgraded in 1997
  • Wall is 343m long, built from concrete and rock
Gympie Times


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