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Storm and flood at Norman Creek, Brisbane (Australia) on 7 November 2004

Description

On 7 November 2004, the storm occurred as a series of heavy rainfalls through the morning and early afternoon. The video described the flood flow in the small catchment of Norman Creek, in the city of Brisbane, Queensland, Australia. Hubert CHANSON inspected Norman Creek between 12:00 noon and 13:50. He noted that the flow was larger than that of an earlier event on 31 December 2001, but less than the design flow. The flow was probably about 80-100 m3/s on 7 November 2004. Cornwall street was not overtopped, but the culvert obvert was submerged. There was a relatively strong hydraulic jump in the inlet of Ridge St culvert, while the Minimum Energy Loss waterway beneath the freeway experienced some small standing waves throughout the entire waterway.

In dry weather, Norman Creek is almost dry, and the flood event was typical of a subtropical, intense storm with rapid flow concentration.

The Minimum Energy Loss structures and the waterway in Norman Creek were built in 1975 as part of the construction of the South-East Freeway and the re-alignment of Norman Creek. These are described in [1] and [2]. Their historical development are detailed in [4] and [5]. Their operation and operational record are discussed in [3]

Author

Hubert Chanson

Date

2004

Copyright

Hubert Chanson

References

[1] CHANSON, H. (1999). "The Hydraulics of Open Channel Flows : An Introduction." Edward Arnold, London, UK, 512 pages (ISBN 0 340 74067 1).

[2] CHANSON, H. (2004). "The Hydraulics of Open Channel Flows : An Introduction." Butterworth-Heinemann, Oxford, UK, 2nd edition, 630 pages (ISBN 0 7506 5978 5).

[3] CHANSON, H. (2004). "Développement et Expérience avec les Systèmes de Drainage à Pertes de Charge Minimales (Minimum Energy Loss Culverts)." ('Development and Experience with Minimum Energy Loss Culverts.') Jl La Houille Blanche, No. 6, pp. 120-129 (ISSN 0018-6368) (in French). {http://eprint.uq.edu.au/archive/00002502/}

[4] CHANSON, H. (2003). "Minimum Energy Loss Structures in Australia : Historical Development and Experience." Proc. 12th Nat. Eng. Heritage Conf., IEAust., Toowoomba Qld, Australia, N. Sheridan Ed., pp. 22-28 (ISBN 0-646-42775-X). {http://eprint.uq.edu.au/archive/00002568/}

[5] CHANSON, H. (2003). "History of Minimum Energy Loss Weirs and Culverts. 1960-2002." Proc. 30th IAHR Biennial Congress, Thessaloniki, Greece, J. GANOULIS and P. PRINOS Ed., Vol. E, pp. 379-387 (ISBN 960-243-599-2). {http://eprint.uq.edu.au/archive/00002562/}