Flood Management Studies

Council has ongoing conversations with the community about our future as a community on a floodplain, and you can take part at www.wagga.nsw.gov.au/FloodFutures

Since early white settlement the Murrumbidgee River has flooded on a number of occasions causing flood damage and inconvenience to the development in the flood plains.

Wagga Wagga City Council has undertaken a number of studies into the flooding of the Murrumbidgee River, and how to manage the risk it poses to the City. These are accessible below. Council has also prepared modelling for a variety of flood scenarios.

History of Floods in Wagga

Since the first rural settlement in the early 1840s there have been 77 floods of over 8.23m. Official records of River heights since 1891 read at the Hampden Bridge gauge are available and estimated records are available of rivers over 8.23m since 1844. Flooding of the City area in the south flood plain was frequent and to a lesser extent flooding occurred in the North Wagga Wagga village.

There have been years of frequent floods, i.e. in one year 1974 Wagga Wagga had five floods all over 8.92 m and there was severe flooding in the 1950 to 1956 period. In other long periods 1939 to 1949 and 1960 to 1970 no floods occurred. Significant floods have occurred in Wagga Wagga in 1852, 1853, 1870, 1891, 1925, 1950, 1952, 1974, 1991 and 2012 with the largest recorded flood of 10.97 metres occurring in 1844. There have been two floods greater than the 1974 flood.

View a complete list of flood years and heights.

2018 Wagga Wagga Revised Murrumbidgee River Floodplain Risk Management Study and Plan 2018

Wagga Wagga Revised Murrumbidgee River Floodplain Risk Management Study and Plan - Volume 1 (PDF, 4.9 MB)

Wagga Wagga Revised Murrumbidgee River Floodplain Risk Management Study and Plan - Figures and Appendices below

Figure 1 - Study Area (PDF, 341.0 KB)
Figure 2 - Key locations and floodplain communities (PDF, 1.6 MB)
Figure 3 - Wagga Wagga City Council LEP - 2010 (PDF, 8.1 MB)
Figure 4 - Wagga Wagga 0.5EY Design Flood Depths and Extent (PDF, 2.3 MB)
Figure 5 - Wagga 10% AEP Design Flood Depths and Extent (PDF, 2.2 MB)
Figure 6 - Wagga 5% AEP Design Flood Depths and Extent (PDF, 2.2 MB)
Figure 7 - Wagga 2% AEP Design Flood Depths and Extent (PDF, 2.1 MB)
Figure 8 - Wagga 1% AEP Design Flood Depths and Extent (PDF, 2.1 MB)
Figure 9 - Wagga 0.5% AEP Design Flood Depths and Extent (PDF, 2.0 MB)
Figure 10 - Wagga 0.2% AEP Design Flood Depths and Extent (PDF, 2.0 MB)
Figure 11 - Wagga PMF Design Flood Depths and Extent (PDF, 1.8 MB)
Figure 12 - Hydraulic Categorisation - 1% AEP Event (PDF, 1.8 MB)
Figure 13 - Hydraulic Categorisation - 5% AEP Event (PDF, 1.9 MB)
Figure 14 - Hydraulic Hazard - 1% AEP Event (PDF, 11.2 MB)
Figure 15 - Hydraulic Hazard - 5% AEP Event (PDF, 11.7 MB)
Figure 16 - Emergency Response Planning Classification - 1% AEP Event (PDF, 3.8 MB)
Figure 17 - Emergency Response Planning Classification - PMF Event (PDF, 3.6 MB)
Figure 18 - Flood Planning Area - Post Levee Upgrade (PDF, 1.7 MB)
Appendix A - Glossary  (PDF, 220.5 KB)
Appendix B - Initial Community Consultation (August / Sept 2016) (PDF, 212.3 KB)
Appendix C - Flood Damages Assessment (PDF, 334.5 KB)
Appendix D - Hydraulic Categorisation - Floodway Definition (PDF, 3.8 MB)
Appendix E - Management Options Mapping (PDF, 17.1 MB)
Appendix F - Management Options Details and Costings (PDF, 1.3 MB)
Appendix G - Future Flood Risk Management (PDF, 4.2 MB)
Appendix H - Vegetation Management Plan (PDF, 11.6 MB)
Appendix I - SES Flood Intelligence Draft Updates (PDF, 543.1 KB)
Appendix J - Emergency Management Considerations for raising North Wagga Levee (PDF, 806.6 KB)
Appendix K - December 2010 and March 2012 Flood Warnings and Evacuation Warnings / Orders for Wagga Wagga (PDF, 208.7 KB)
Appendix L - Alternate North Wagga Evacuation Route (PDF, 727.6 KB)
Appendix M - Responses to Public Exhibition Submissions (PDF, 655.0 KB)

2014 Wagga Wagga Detailed Flood Model Revision - Final Report August 2014

2012 Wagga Wagga Local Government Area Flood Study - Final Report January 2012

2011 Wagga Wagga Major Overland Flow Flood Study (MOFFS) - Final Report August 2011

2011 Oura to Braehour Flood Model Extension

2010 Murrumbidgee River Model Conversion Project

2009 Floodplain Risk Management Plan documentation

2009 Floodplain Risk Management Study documentation

2004 Flood Study documentation