Subject:   How to use the Report Feature of the HGL Plot in InfoSWMM

The report feature of the HGL plot helps you understand in more detail the pump flows, forcemain flows and node heads.

Step 1. Load the Domain in the HGL Plot using Report Manager

Step 2. Click on … Read the rest

Subject:   3 Types of Subcatchment Flow in SWMM 5

There are three types of Subcatchment flow in SWMM 5

 1.   Impervious area with depression storage in which the runoff from the precipitation is delayed due to the depression storage.  Evaporation occurs based on the depth of water in the subarea … Read the rest

Subject:   H2OMAP Sewer and InfoSewer DB Queries to find Loading Manholes

This Database Query (DB) will find all loading Manholes with a Load1 and a Load2 greater than 0.  InfoSewer has up to ten possible loads in a Manhole.  You can use the DB Query (Figure 1) to … Read the rest

Note:  How to Set a Flap Gate in InfoSWMM

 You can set a flap gate in InfoSWMM either by using the attribute browser and changing the Flap Gate Installed to Yes or No or by using the DB Editor and changing the Flag for Flap Gate Installed to Yes by … Read the rest

Subject:   SWMM 5 Arrow Direction Question

A question often asked is what happens to the flow in a SWMM 5 link if the downstream and upstream node names are entered in reverse.    The flow will be exactly the same as if the nodes were entered in the right order but … Read the rest

Subject:    SWMM 5, H2OMap SWMM and InfoSWMM Time Step Guide

If you use a variable time step in SWMM 5 or InfoSWMM/H2OMAP SWMM it is hard to gauge the proper value of the conduit lengthening.  You want to use a value that does not increase the volume of the … Read the rest

Subject:  Siphon Simulation in SWMM 5 and InfoSWMM 

A Siphon is simulated in SWMM 5 and InfoSWMM using the basic node and link data and downstream boundary condition:

1.   Inflow can be time series, dry weather flow pattern, wet weather inflow or Subcatchment Runoff,

2.   The boundary condition can be … Read the rest

Subject:   Aquifers in SWMM 5

Groundwater in SWMM 5 is modeled as two zones: (1) Saturated and (2) Unstaturated.  The data for the Groundwater Simulation consists of physical data in an Aquifer and elevation and flow coefficient and exponent data in the GroundwaterData.  The Aquifer data object can … Read the rest

Subject:   InfoSWMM Pump Summary Table

The Pump Summary Table in Report Manager tells you how often the pumps turn on (Start-Up Count), the percent of the simulation time it was used (Percent Utilized) and the maximum, minimum and average flow for the pumps.

You can also see flows in … Read the rest

Subject:   How to Use Domain Manager in InfoSWMM to Reduce the Output File Size

If you want to save the output at a small report time step (2 seconds in this case) and you have a long simulation or large model then the reading of the graphicalo results may not … Read the rest

Subject:  InfoSWMM Report Manager and Field Statistics

You can also use the mixed graph feature to plot the pump flow and the downstream flows on the same graph.  If you click on the Report command then you can also use aField Statistics command to see the Statistics for each … Read the rest

Dry Weather Flow in InfoSWMM and H2OMap SWMM

Dry weather flow can be added to any node in H2OMAP SWMM.  The dry weather flow is computed as the average flow * the monthly pattern * the daily pattern * hourly pattern * the weekend daily pattern to give the … Read the rest

Subject:  How to Make a Small Model out of a Large Model in H2OMAP Sewer

The process is easy if you use Domain and Facilities.  

Step 1.  Use the Trace Upstream Network Command in Utilities to find the upstream network from your node of interest.  The upstream network is saved … Read the rest

Subject:   SWMM 5 QA and Application Manuals on the EPA Web Site

The EPA Web Site has three manuals that you can download at http://www.epa.gov/nrmrl/wswrd/wq/models/swmm/#Downloads

1.   SWMM Applications Manual

2.   SWMM 5 Quality Assurance Report

3.   SWMM 5 Users Manual

via Blogger http://www.swmm5.net/2013/08/swmm-5-qa-and-application-manuals-on.html… Read the rest

Subject:  SWMM 5 Culvert Data from FHWA, HDS No. 5, Hydraulic Design of Highway Culverts, 1985