source: github Introduction Spatially varying rainfall in InfoWorks ICM help to improve the rainfall spatial accuracy. You can add spatially varying rainfall into InfoWorks ICM using a Rainfall Event or Spatial Time Series Database. A rainfall event object records rainfall for a network of rain gauges. Each gauge has a…

source: Innovyze support Portal Some ICM models can produce large results datasets — sometimes in the order of tens or even hundreds of GBs per simulation. Large results datasets can lead to storage or file access issues. In this article we’ll discuss strategies to manage the size of modelling results…

source: github Introduction SWMM/XPSWMM is a widely used software that utilizes a node-link scheme for modeling drainage networks, particularly for underground pipe systems. While this scheme works well for such networks, it becomes challenging when modeling open channels or culverts since these objects do not have physical nodes in the real…

source: github Introduction When building large hydrology models, you might find it easier to prepare the subcatchments input parameters in GIS or CAD software. Two commonly used methods to get external data into XPSWMM are “import from GIS” and “GIS Link”. Most users are familiar with the “import from GIS”, but…

Source: github Introduction The runoff from pervious areas can be highly dependent on the infiltration settings used in models like SWMM. To ensure accurate results, SWMM infiltration methods have undergone several major updates. The choice of infiltration methods in SWMM5 are the modified Green Ampt, Modified Horton, and CN methods, all…

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