SWMM4 Fortran Repository
A collection of various versions of SWMM 3 and 4. WCH_2004 is the last version developed by Wayne Huber at OSU in 2004 before the 1st SWMM5 release
and code for SWMM4.99 by CDM Pittsburgh (as of 2004)
#SWMM3 and #SWMM4 Acknowledgments, includes mention of #PCSWMM
A note from the past, the SWMM3 and SWMM4 Acknowledgments from their respective manuals for the sake of posterity and in thanks for all of their past efforts.
SWMM4 Acknowledgments
Maintenance and updating of the EPA SWMM has been continuous since its
inception in 1969-70.
Over the many intervening years … Read the rest
Extran Hydraulics Master from #Extran3 and #SWMM4 converted to #SWMM5
This is part of the #Inside_#SWMM5 series of blogs and is intended as a visual aid and code developer for the Storm Water Management Model Reference Manuals on https://www.epa.gov/water-research/storm-water-management-model-swmm I always think images (and some words) are best at explaining the internal working of code. I do encourage you to … Read the rest
Graphical View of the Runoff process in #SWMM5 and #INFOSWMM

Here is a graphical view of the nonlinear runoff processes in InfoSWMM and SWMM5:
1. Three runoff surfaces
a. Impervious with Depression Storage
b. Pervious
c. Impervious without Depression Storage
2. Slope (same for all runoff surfaces)
3. Width or the Dimension of the Subcatchment (same for all runoff surfaces)… Read the rest
Huber Nato Water Quality Paper about Water Quality in SWMM4
Huber Nato Water Quality Paper about Water Quality in SWMM4
SWMM 3 Manual and PDF File

This is just so I can find this using Google Search in the Future
SWMM 3 Manual and PDF File
World-Renowned Urban Drainage Modeling Authority Robert Dickinson Joined Innovyze in January, 2008
World-Renowned Urban Drainage Modeling Authority Robert Dickinson Joined Innovyze in January, 2008
Broomfield, Colorado USA, January 16, 2008/altered 2014
SWMM 4 and SWMM 5 St. Venant Solutions Contrasted

SWMM 4 and SWMM 5 St. Venant Solutions Contrasted
1. Compute at time t+delta t the values of dQ/dt for the Links and dH/dt for the Nodes from the properties at time t
2 Iterate at least 2 times until either all nodes and links are converged or a … Read the rest