Abstract
We describe a simplified method for computing dam-break waves and the results of the corresponding validation tests. Computation for one given cross section only uses data relative to the dam and that section completed by the Manning-Strickler coefficient for the reach between the dam and that section. The references of the various comparisons consist of computations with a model solving de Saint-Venant equations. Results are generally good as well for maximum water heights (difference less than 30% in more than 90% of sections) as for maximum velocities and wave arrival times. We also note this important point that the uniform flow equation is verified between maximum discharge and maximum water height.
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