source: github Introduction Evaporation usually is not a significant source of loss for models running a single design storm for system capacity analysis. However, for continuous simulation with a focus on water volume and quality, it can have significant impact on the modeling results. Evaporation happens when there is standing water…

When working with modeling software packages like XPSWMM or SWMM, text files are often used to store the models. Even software that uses a database to store the model, like InfoWorks ICM, may still use text files as an exchange format. As the size of the model grows, the text…

In part 1 we covered the basics of SCS hydrology (CN method and SCS UH), and in part 2 we showed how to set it up in XPSWMM and HEC-RAS. In this post we’ll go through the steps of setting up SCS hydrology in an InfoWorks ICM network. InfoWorks ICM subcatchment InfoWorks manages…

InfoWorks ICM Ground Infiltration simulates the complicated long term hydrological cycle of sewer infiltration over seasons. Most modelers with a Civil background are not familiar with these concepts, and here are a few diagrams to give you a fast start. Input Parameters

In part 1, we reviewed the basic ideas behind SCS hydrology method. In this post, we will setup a model in both XPSWMM and HEC-HMS. XPSWMM In XSWMM, for each subcatchment, you enter the following, · Area · Imp (%) · Shape factor · Initial abstraction · CN · Time of…

Introduction SCS hydrology is a widely used method for designing stormwater sewer. It is well documented in TR-55 and implemented in many software packages. HEC-HMS online help explains how it transforms the rainfall into hydrograph, · SCS curve number loss model · SCS Unit hydrograph routing model In the first step…

Source: github Introduction Outfall nodes are terminal nodes where water leaves the simulated system. You can define the boundary conditions of outfall in SWMM5 as, Critical or normal flow depth in the connecting conduit A fixed stage A tidal stage A user defined stage vs time series XPSWMM provides similar options…

source: github Introduction To model an underground storage unit shown below is straight forward, you just need to define the storage curve of the tank and the manhole. …

source: Innoyvze Support Portal From time to time, the 2D results might not show up in XPSWMM. Most of the time you can get the results showing up with a few simple steps. Select scenario & global storm Select the global storm or the scenario in the dropdown list will reload the results. Reload the results You can also try to reload the results.