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Showing posts from October, 2013

Innovyze President Dr. Paul F. Boulos Assumes Presidency of American Academy of Water Resources Engineers

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Press Room | Products | News | Events | The Company Innovyze President Dr. Paul F. Boulos Assumes Presidency of American Academy of Water Resources Engineers Broomfield, Colorado, USA, October 29, 2013 — Innovyze, a leading global innovator of business analytics software and technologies for smart wet infrastructure, today announced that its President, COO and Chief Technical Officer, Paul F. Boulos, Ph.D., BCEEM, Hon.D.WRE, Dist.D.NE, F.ASCE, has assumed the position of President and Chairman of the Board of Trustees of the American Academy of Water Resources Engineers (AAWRE) of the American Society of Civil Engineers (ASCE). He succeeds Robert G. Traver, Ph.D., P.E., D.WRE, Director of the Villanova Center for the Advancement of Sustainability in Engineering and Professor, Department of Civil and Environmental Engineering at Villanova University (Villanova, PA), who will now serve as Past President. Dr. Boulos was first elected to the AAWRE Board of Trustees in 2009.
In his new role, …

How to Use the Compare Report Command in H2OMap SWMM and InfoSWMM

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How to Use the Compare Report Command in H2OMap SWMM and InfoSWMM
1.Run all of your scenario using Batch Simulation and Select Conduit Summary from the Report Manager
2.Select all of your scenarios using  the Compare Report Icon
3.You will have a lot of columns so Using the Format Report Icon select a few report variables to view
4.You will now have a table with the Peak flow or Peak Depth for all Scenarios
5.h/t MJ for the suggestion




ALCOSAN Wet Weather Plan Link

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A link to the ALCOSAN Wet Weather Plan for Allegheny Country, Pennsylvania

http://www.alcosan.org/Portals/0/Wet%20Weather%20Plan/Section%204.0%20thru%204.4.pdf


How InfoSWMM uses Calibration or monitored data during a Simulation

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How InfoSWMM uses Calibration or monitored data during a Simulation

The calibration data is used in the Calibrator Addon (which uses a Genetic Algorithm  to calibrate RDII, Subcatchment, Infiltration, Groundwater, Pipe, Node or Pump input data to calibration data) by running a model many times to optimize the fit (Figure A).  The fit between measured and simulated results can be viewed in the Output Report Manager with comparison statistics on the graph (Figure B).  The monitored data is linked to your model using the Calibration Tool (Figures C, D and E) and the GA Calibration process is controlled by many best fit options (Figure F).










How to Define Green Ampt Infiltration in ICM

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Here are the steps to make a Subcatchment with Green Ampt Infiltration in ICM:

1.You use the Subcatchment, Land Use and Runoff Surface Tabs in the Subcatchment Grid (Bullet 1)
2.The Subcatchment Tab has three Runoff Areas for Impervious with Depression Storage or Initial Loss, Impervious with no Initial Loss and Pervious Area (Bullet 2)
3.The Runoff Surface percentages on the Subcatchment are connected to the Land Use Tab by the Land Use ID, in this example we are using Runoff Surfaces 22, 23 and 24 (Bullet 3)
4.The Runoff Tab defines the Runoff Surfaces defined in the Subcatchment Tab and Land Use Tab (Bullet 4)
5.You can define the Routing Model per Runoff Surface or SWMM in this case (Bullet 5)
6.The type of Runoff Surface and Surface Type for each Runoff Surface or GreenAmpt for Runoff Surface ID of 24 (Bullet 6)
7.The Depression Storage or Initial Loss Value for each Runoff Surface in the Runoff Surface Tab (Bullet 7)
8.The Green Ampt Infiltration Parameters are defined to the rig…

Hazen Williams and Force Mains in SWMM 5

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A few tips for using Hazen Williams and Force Mains in SWMM 5.   A key fact is to remember ONLY one flow in the middle of the link is computed in SWMM 5 so you may have to add Break nodes, use a smaller time step and use a flap gate depending on how often your pumps turn on.  If you do not have numerical problems with the time step you should get exactly the same head loss as you do in steady state Hazen Williams calculators when you use InfoSWMM, H2OMap SWMM and SWMM 5.




Ganesh ji and Modelling

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I have always thought that Ganesh ji is an ideal God or Symbol for modellers or even modelers.    Here are a few of his characteristics including a large stomach, which you can combat by exercise - I love walking but find what works best for you.




Knowing How to Change Your Mind: A Three Minute Guide to Bayesian Reasoning

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Knowing How to Change Your Mind: A Three Minute Guide to Bayesian Reasoning        NEW LESSON with Julia GalefSince you cannot really be 100 percent certain of a theory, a better way to put it to yourself is to say "I think this is very likely to be true."http://bigthink.com/big-think-mentor/knowing-how-to-change-your-mind-a-three-minute-guide-to-bayesian-reasoning

My History with Various Versions of SWMM: SWMM3, SWMM4, SWMM5, XP-SWMM and InfoSWMM

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Subject:   My History with Various Versions of SWMM: SWMM3, SWMM4, SWMM5, XP-SWMM and InfoSWMM

I first learned about SWMM in a brochure from the University of Florida when I was just a 17 year old senior in High School.  Water resources and the description of SWMM seemed to be worthy career goals at the time and I have been extremely lucky to have the opportunity to work and develop many SWMM related products in my working life.   I am especially proud that SWMM 3, SWMM 4 and SWMM 5 are both public domain and open source software.  You can open up and look at the code and add features and internal tests on your own.   You can customize the input and output of SWMM 5 if you want to but most importantly you have direct access to the source code so you can verify the computational algorithms.

InfoSWMM is an Arc GIS extension that works in Arc Map but we at Innovyze are proud that we have superb import and export features to SWMM 5 from Arc Map and use the SWMM 5 engine as our engine solu…

Edward Burtynsky's Water

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Edward Burtynsky's Water Photographer Edward Burtynsky's latest project is called Water. While trying to accommodate the growing needs of an expanding, and very thirsty civilization, we are reshaping the Earth in colossal ways. In this new and powerful role over the planet, we are also capable of engineering our own demise. We have to learn to think more long-term about the consequences of what we are doing, while we are doing it. My hope is that these pictures will stimulate a process of thinking about something essential to our survival; something we often take for granted -- until it's gone via Kottke

A Dark Day/Week/Month? in SWMM History

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How the Steady State option works in H2OMap SWMM and InfoSWMM

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Howthe Steady State option works in H2OMap SWMM:
1.Use Keep, a Time Step lengthening of 10 seconds, a time step of 60 seconds and iterations as shown in Bullet 1
2.Use the Steady State Option of Skip Steady State Period when the total inflow between time step is less than 0.05 cfs or the equivalent in lps or cms units
3.A time step of 10 seconds will be used during Wet Weather, a time step of 60 seconds will be used during the transition between dry and wet weather or Bullet 3
4.You should be able to speed up your by a factor of 10 to 2o to 1 depending on the frequency of rainfall  or Bullet 4
5.This was 10 year simulation using the dynamic wave option of SWMM 5






The Effect of the Wrong Raingage Interval in H2OMap SWMM and InfoSWMM

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Here is an example showing the Runoff, Rainfall and Infiltration losses when you use the wrong interval based on the hyetograph time series.
1.Figure 1 shows the Rainfall, Runoff and Infiltration for a time interval of 5 minutes which matches the hyetograph interval, the raingage has units of mm and is the total volume over the interval
a.The volume of rainfall is 20.03 mm as it the total rainfall over the interval b.The rainfall, runoff and infiltration graphs are smooth 2.Figure 2 shows the Rainfall, Runoff and Infiltration for a time interval of 1 minutes which does NOT match the hyetograph interval, the raingage has units of mm and is the total volume over the interval
a.The volume of rainfall is 20.03 mm as it the total rainfall over the interval b.The rainfall, runoff and infiltration graphs are not smooth as there is a gap of no rainfall between minute 1 and 5 for all of the hyetograph time intervals c.The peak rainfall is higher as the rainfall is over 1 minute instead of 5 min…