FLOOD WARNING SYSTEM
for the
MACINTYRE AND WEIR RIVERS

Macintyre River at Goondiwindi

Contained in this document is information about: (Last updated October 2018) Flood Risk Previous Flooding Flood Warning Local Information Flood Warnings and Bulletins Interpreting Flood Warnings and River Height Bulletins Flood Classifications Other Links

Flood Risk

The Macintyre and Weir Rivers drain an area of about 44,000 square kilometres, most of which lies in the southern border parts of Queensland, with a small part of the basin extending into New South Wales. The Macintyre River has three main tributaries - the Macintyre River in New South Wales, the Dumaresq River along the border, and the Macintyre Brook. Major flooding can occur along each of these river systems causing isolation of towns and rural lands, and severe flooding at times in the Goondiwindi area.

Major flooding is also experienced along the Weir River which joins the Macintyre about 200 kilometres downstream from Goondiwindi, near Talwood.

Previous Flooding

Records of large floods at Goondiwindi extend back as far as 1886, and since then more than 60 major floods have occurred. In 1956, Goondiwindi experienced three major floods within six months which prompted the building of levee banks to protect the town. The 1996 flood of 10.6 metres stood as the Goondiwindi record flood until January 2011 when the Macintyre River reached 10.64 metres.

Flood Forecasting

The Goondiwindi Regional Council, in conjunction with the Bureau of Meteorology operate a flood warning system for the Border River catchments. The ALERT network consists of automatic rainfall and river height stations which regularly forward data via radio telemetry to base stations located at Inglewood and the Bureau's Flood Warning Centre in Brisbane. The system provides early warning of heavy rainfall and river rises in the catchment and enables more accurate and timely flood warning and forecasts. The balance of the network consists of volunteer rainfall and river height observers who forward observations by telephone when the initial flood height has been exceeded at their station. The Department of Natural Resources and Mines also operates a number of automatic telemetry stations throughout the catchment which also provides data during floods.

The Bureau Flood Warning Centre in Brisbane issues Flood Warnings and River Height Bulletins for the Macintyre and Weir Rivers during flood events. River height predictions are given for a number of flood affected towns, including Talwood, Inglewood, Texas and Goondiwindi. The Bureau of Meteorology's  Flood Warning Centre located in Sydney, provides forecasts and warnings for the NSW towns of Bogggabilla on the Macintyre River and Mungindi on the Barwon River.

Local Information

The Goondiwindi Regional Council is able to provide further information on flooding in the area of the Macintyre and Weir River catchment.

Flood Warnings and Bulletins

The Bureau of Meteorology issues Flood Warnings and River Height Bulletins for the Macintyre and Weir River catchment 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 :

Radio
Radio stations, particularly the local ABC, and local commercial stations, broadcast Flood Warnings and River Height Bulletins soon after issue. 

Local response organisations
These include the Council, Police, and State Emergency Services in the local area. 

Internet/World Wide Web
Flood Warnings, River Height Bulletins and other weather related data is available on the Bureau's Web page at http://www.bom.gov.au . The Queensland Flood Warning Centre website is http://www.bom.gov.au/qld/flood .

Telephone Weather
Flood Warnings are available through a recorded voice retrieval system, along with a wide range of other weather related and climate information.

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 Macintyre and Weir River catchment - it contains the flood gauge heights of the more significant recent floods.

All heights are in metres on the flood gauges.
[*] These heights have been taken at old gauge sites and may not relate to existing gauge sites.

Historical flood heights for all river stations in the Macintyre and Weir River Floodwarning network, as shown on the map, are available from the Bureau of Meteorology upon request.

Flood Classifications

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.

Minor Flooding : Causes inconvenience. Low-lying areas next to watercourses are inundated. Minor roads may be closed and low-level bridges submerged. In urban areas inundation may affect some backyards and buildings below the floor level as well as bicycle and pedestrian paths. In rural areas removal of stock and equipment may be required. Moderate Flooding : In addition to the above, the area of inundation is more substantial. Main traffic routes may be affected. Some buildings may be affected above the floor level. Evacuation of flood affected areas may be required. In rural areas removal of stock is required. Major Flooding : In addition to the above, extensive rural areas and/or urban areas are inundated. Many buildings may be affected above the floor level. Properties and towns are likely to be isolated and major rail and traffic routes closed. Evacuation of flood affected areas may be required. Utility services may be impacted.

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 Macintyre and Weir River catchment.

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: