SWMM56

In SWMM 5 there is a Routing time step summary which tells the modeler the minimum time step during the simulation based on the CFL condition, the average time step, maximum time step, the percent of time spent in steady state, the average iterations per step and the percent not converging.  The percent not converging means the percent of the time the link flows and node depths did not converge within the maximum number of trials per time step (Figure 1).   *************************   Routing Time Step Summary   *************************   Minimum Time Step           :     0.52 sec     Average Time Step           :     8.76 sec   Maximum Time Step           :    10.00 sec   Percent in Steady State     :     0.00   Average Iterations per Step :     2.14   Percent Not Converging      : ...