The township of Lockhart is located 60 km southwest of Wagga Wagga, 56 km south of Narrandera and 97 km north of Albury in Lockhart Shire Council Local Government Area. The township of Lockhart experiences regular flooding from the Brookong Creek and also from major overland flow. This Study considers flooding from both sources.
Primarily, the study was developed in order to meet the objective of defining the flood behaviour (5 year ARI, 10%, 5%, 1%, 0.5% AEP events and the Probable Maximum Flood (PMF)) in the township of Lockhart and to:
- Define flood behaviour in terms of flood levels, depths, velocities, flows and flood extents within the study area (provided electronically to Council);
- Prepare flood extent mapping (for all design events modelled);
- Prepare provisional flood hazard category mapping for the 5% and 1% AEP events as well as the PMF;
- Provide hydraulic category mapping as well as a discussion of the method used relative to other guidelines and methods;
- Provide Interim Flood Planning Area maps (FPAs);
- Identify flooding “hotspots” – existing and future – for further consideration as part of the FRM Study; and to
- Create a modelling system that might be used in the subsequent FRMS&P to test whatever flood mitigation works might be proposed by either the community, OEH, Council or the consultant.
