shallow water are governed by the shallow water wave equations, also know as the saint-venant system. This paper present a finite volume method used to solve the two-dimensional shallow water wave equations and how the finite volume method is implemented in ANUGA software. This finite volume method is the numerical method underlying the software. Anuga is open source software developed by Australian National University (ANU) and geoscience Austealia (GA). This software uses the finite volumt method with triangular domain discretisation for the computation. Four test cases are considered in order to evaluate the performance of the software. Overall, ANUGA is a robust software to simulate two-dimensional shallow water flows.