If selected and the change in lateral inflow or node volume or node depth is higher that the defined tolerance for any single node in the collection system, then hydraulic routing will be conducted, otherwise the steady state condition will be assumed. (See Improved Dry Weather Computation Efficiency for more information.)
Skip Steady State Period - Select to skip steady state period and use the tolerances below or leave blank to use internal default tolerances. (Note: Internal default tolerance: Lateral Inflow = 0.00001 cfs, Node Depth = 0.00001 ft, Node Volume = 0.01 ft3.)
Lateral Inflow Tolerance - minimum change in lateral inflow per simulation timestep for hydraulic routing to be performed.
|Figure 1 - InfoSWMM Non Steady Periods|
|Figure 2 - Event Editor in EPA SWMM 5.1.011|