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Showing posts from October, 2017

How the Pump Target setting in #SWMM5 works with Initial Conditions

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How does the Pump Target setting in #SWMM5 work?  Your pump options, include the initial conditions, the pump on and off depths, the pump type, the pump curve and optional real time rules or RTC Rules. Red is the situation if you start with the Pump with the Wet Well depth greater than the Pump Off Depth. The Pump Setting is greater than zero and the depth is greater than the Pump Off Depth – the pump never turns off.   You need start the pump in the off condition.Purple and Green is the situation when you start the model with the Pump Off.  The Pump then turns on based on the Pump On depth and off based on the Wet Well depth and the Pump off depth.

How is the variable time step option used in #SWMM5

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How is the variable time step option used in #SWMM5? - Normally when using the variable time step in SWMM5 (Figure 2), the node time step is equal to the maximum user defined time step, the link time step changes based on a combination of the shortest link, Cr value and Velocity (Figure 1). Figure 1 How is the variable time step option used in #SWMM5
Figure 2 Dynamic Wave Options in SWMM 5 include Variable Time Steps

Overview of Center for Infrastructure Modeling and Management NCIMM for #SWMM6

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The Center for Infrastructure Modeling and Management has been envisaged as an entity that will preserve, promote and extend the US EPA SWMM and EPANETsoftware applications, and potentially other applications.  SWMM and EPANET are two foremost tools for assessment of watershed hydrology and pipe network hydraulics, respectively, and are perhaps unparalleled examples of technical community accomplishments conducted as a partnership of stakeholders from all avenues of professional practice.  Build over decades with participation from regulatory, academic, consulting,  owner/operator, vendors, and institutional support under the continuing leadership of the US EPA, these tools are used around the world as 'first choice' software applications in many, many situations.  They will remain as first choice tools for years to come.  A key question, therefore, is how to ensure these hallmarks of professional practice can be maintained, promoted, and developed going forward.  The expectat…

InfoSWMM and EPA SWMM 5 Version Comparison and How InfoSWMM works as an Extension in Arc GIS

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InfoSWMM and EPA SWMM 5 Version Comparison and How InfoSWMM works as an Extension in Arc GIS
See below for the important list of InfoSWMM versions and EPA SWMM 5 engines.  Figure 1 shows how the SWMM5 data is shown in both the Database of InfoSWMM and the Map of Arc GIS.  You see the data on the map and you can edit the data in the Attribute Browser (AB) and DB Editor.
     InfoSWMM Version 14.5 Update 10 for Arc Map 10.5 and Windows 7/8/8.1/10 pro or above - EPA SWMM 5.1.012  10/7/2017      InfoSWMM Version 14.5 Update 9 for Arc Map 10.5 and Windows 7/8/8.1/10 pro or above - EPA SWMM 5.1.012  5/15/2017      InfoSWMM Version 14.5 Update 8 for Arc Map 10.5 and Windows 7/8/8.1/10 pro or above - EPA SWMM 5.1.012  4/17/2017      InfoSWMM Version 14.5 Update 7 for Arc Map 10.5 and Windows 7/8/8.1/10 pro or above - EPA SWMM 5.1.011  3/29/2017      InfoSWMM Version 14.5 Update 6 for Arc Map 10.5 and Windows 7/8/8.1/10 pro or above - EPA SWMM 5.1.011  3/9/2017      InfoSWMM Version 14.5 Update 5 …

A visual view of the CDM SWMM5 GUI Circa 2007

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This is from a working QA/QC version of SWMM 5.022 showing some feedback from the Simulation Run to the User’s Run Status dialog: You can see the total inflow, outflow, storage and flooding in a graph and text box in the Run Status dialogYou can see a running estimate of the Continuity Error (CE) andIt stays on the screen when the run as finished.The following images show some examples.