# Day: August 6, 2013

## Modeling H2S in InfoSWMM, ICM and InfoSewer

Subject:   Modeling H2S in InfoSWMM, ICM and InfoSewer
You can model Sulfide in InfoSWMM/ICM and InfoSewer using the H2S water quality modeling option which uses BOD5 loading at nodes to

## Mass Balance for Water Quality in SWMM 5

Subject:   Mass Balance for Water Quality in SWMM 5

The rainfall concentration is listed in the wet deposition row of the Runoff Quality Continuity Table, the washoff such as EMC washoff is listed

If you have a time series of flow and water quality at a node in SWMM 5 you have the option of using

## Convolution of the RDII UH from R, T and K in SWMM 5

Subject:  Convolution of the RDII UH from R, T and K in SWMM 5

The convolution uses the value of R and the Time Base to estimate the amount of Infiltration and Inflow

## What are the Equations for Weirs in SWMM 5, Part 2?

Subject:   What are the Equations for Weirs in SWMM 5Part 2?

There are four types of Weirs in SWMM 5:  Transverse, Sideflow, V Notch and Trapezoidal.   The trapezoidal weir

## Water Quality Treatment Removal Variables in SWMM5

Subject:    Water Quality Treatment Removal Variables in SWMM5

The treatment variables for Water Quality in a SWMM 5 storage unit (Figure 1) can be either:

1.       A Process Variable

a.       HRT or Hydraulic

## How does the Infiltration Maximum Time to Drain the Upper Soil Zone Work in SWMM 5 Green Ampt?

Subject:  How does the Infiltration Maximum Time to Drain the Upper Soil Zone Work in SWMM 5 Green Ampt?

You can use the monthly soil recovery factor (Figure 1) in SWMM 5

## Dry Weather Flow in InfoSWMM and H2OMap SWMM

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

## Example DUPUIT-FORCHHEIMER APPROXIMATION FOR SUBSURFACE FLOW Model in SWMM 5

Subject:   Example  DUPUIT-FORCHHEIMER APPROXIMATION FOR SUBSURFACE FLOW Model in SWMM 5

This example was created from an older SWMM 4 model from 1988 using the SWMM 4 to SWMM 5 converter.  The values

## Saving an Output Relate in InfoSWMM directly to Excel using Arc Tool Box

Subject:  Saving an Output Relate in InfoSWMM directly to Excel using Arc Tool Box

The following shows how to make an Excel file directly from a feature table in InfoSWMM