This brochure describes the flood
warning system operated by the Australian Government, Bureau of
Meteorology for the Logan and Albert Rivers. It includes reference
information which will be useful for understanding Flood Warnings and
River Height Bulletins issued by the Bureau's Flood Warning Centre
during periods of high rainfall and flooding.
The Logan River has a catchment area of about 3850 square kilometres and lies in the south east corner of Queensland. The catchment extends from the Logan City-Beenleigh area in the north to the McPherson Ranges in the south on the Queensland-NSW border. The major tributaries are the Albert River and Teviot Brook. Smaller tributaries include Running, Christmas, Burnett and Canungra Creeks in the headwaters. Major flooding is experienced in both rural and urban areas of the catchment although major flooding in the upper part of the catchment does not necessarily result in significant flooding in the lower catchment.
Scrubby and Slacks Creeks in the lower reaches of the Logan River can be subject to flash flooding as well as backwater flooding during major river flood events.
Records of large floods in the Logan-Albert Rivers extend back as far as 1887, and since then there have been several major flood events. The flood of January 1974 was the most severe in recent memory. Severe floods have occurred in the upper reaches of the Logan River in February 1976 and February 1991.
The Bureau of Meteorology operates a flood warning system for the Logan and Albert River catchments based on a rainfall and river height observations network shown on the map. The network consists of a number of volunteer rainfall and river height observers who forward observations by telephone when the initial flood height has been exceeded at their station, as well as automatic telephone telemetry stations which are operated by the Department of Natural Resources & Mines and the Bureau of Meteorology.
In conjunction with the Logan City Council, the Bureau also operates an ALERT radio telemetry network of Floodwarning stations in the lower reaches of the Logan River in the Slacks Creek and Scrubby Creek catchments, as well as the station at Waterford on the Logan River. These rainfall and river height stations regularly send data via radio telemetry to a base station located in Council offices and the Bureau's Flood Warning Centre in Brisbane. The system provides early warning of heavy rainfalls and river rises throughout the catchment and enables more accurate and timely flood warning and forecasts.
The Bureau's Flood Warning Centre issues Flood Warnings and River Height Bulletins for the Logan and Albert Rivers during flood events. Quantitative flood forecasts are issued for Waterford when the level is likely to exceed 6.0 metres or minor flood level.
The Logan City Council and Scenic Rim Regional Council are able to provide further information on flooding in your area of the Logan and Albert River catchments.
Flood Warnings and Bulletins
The Bureau of Meteorology issues Flood Warnings and River Height Bulletins for the Logan and Albert River catchments regularly during floods. They are sent to radio stations for broadcast, and to local Councils, emergency services and a large number of other agencies involved in managing flood response activities. Flood Warnings and River Height Bulletins are available via :
Internet/World Wide Web
Interpreting Flood Warnings and River Height Bulletins
Flood Warnings and River Height Bulletins contain observed river heights for a selection of the river height monitoring locations. The time at which the river reading has been taken is given together with its tendency (e.g. rising, falling, steady or at its peak). The Flood Warnings may also contain predictions in the form of minor, moderate or major flooding for a period in the future. River Height Bulletins also give the height above or below the road bridge or causeway for each river station located near a road crossing.
One of the simplest ways of understanding what the actual or predicted river height means is to compare the height given in the Warning or Bulletin with the height of previous floods at that location.
The table below summarises the flood history of the Logan and Albert River catchments - it contains the flood gauge heights of the more significant recent floods.
[*] Estimated peak flood heights from flood marks and other information.
Historical flood heights for all river stations in the Logan and Albert River catchments Floodwarning network, as shown on the map, are available from the Bureau of Meteorology upon request.
At each flood warning river height station, the severity of flooding is described as minor, moderate or major according to the effects caused in the local area or in nearby downstream areas. Terms used in Flood Warnings are based on the following definitions.
Each river height station has a pre-determined flood classification which details heights on gauges at which minor, moderate and major flooding commences. Other flood heights may also be defined which indicate at what height the local road crossing or town becomes affected by floodwaters.
The table below shows the flood classifications for selected river height stations in the Logan and Albert River catchments.
(B) = Bridge (A) = Approaches
The above details are correct at the time of preparing this document. Up-to-date flood classifications and other details for all flood warning stations in the network are at:
Flood gauge information
For the latest rainfall and river height conditions please use the following link:
For the latest rainfall and river height network map please use the following link:Network maps
For further information, contact:
The Regional Hydrology Manager, Bureau of Meteorology, GPO Box 413, Brisbane Q 4001