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Showing posts from November, 2012

### Grupo de Apoyo para usuarios de SWMM (SWMM in Spanish/ SWMM en Español)

There is a Google Group for Hispanic SWMM5 users around the world that has a lot of good discussions and more importantly help for your SWMM5 modeling.   You can easily join if you use GMAIL or Google+   The link is https://groups.google.com/forum/?fromgroups#!forum/swmm-espanol

### Siphon Modeling in InfoSewer and Arc Map

Siphon Modeling in InfoSewer and Arc Map

Siphon Modeling in InfoSewer and Arc Map Atrribute Displayby dickinsonreSiphon Modeling in InfoSewer and Arc Map
Here is a typical view of  a siphon in InfoSewer, the rising links have a d/D of 1 and the dropping links typically have a d/D value less than 1.  The q/Q for the rising links is based on the slope and the dropping links typically have a q/Q less than 1 as the full flow is high due to the steep slopes.  You can show both the d/D and q/Q values in an Arc Map Display by using the following code.  I find it easier to first plot one variable using the InfoSewer Map Display followed by editing the TOC Properties for Pipes to show more than one variable at a time in the Label properties.
Function FindLabel ([D_OVER_D],  [Q_OVER_Q] ) If IsNull([D_OVER_D]) then Exit Function FindLabel ="" &  FormatNumber([D_OVER_D],3) & "  d/D "  & "" &  FormatNumber([Q_OVER_Q],3) & " q/Q" End Function
vi…

### SWMM 4 and SWMM 5 St. Venant Solutions Contrasted

SWMM 4 and SWMM 5 St. Venant Solutions Contrasted
SWMM 4 and SWMM 5 St. Venant Solutions Contrastedby dickinsonreSWMM 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 maximum of 8 iterations are reached 3. Use the values of Q and H at time t+delta t for the new time step
The SWMM5 Solution for Flow and Depth at each time step.  The new depth and new flow is always based on the old depth and old flow and normally converges fast as the flow is gradually varied.   The solution is iterative and implicitly uses the new depth and flow at each iteration.
The SWMM4 Solution for Flow and Depth is solved Explicitly at each time step.  The new depth and new flow is always based on the old depth and old flow and and a half and full time step during the time step.
via Blogger http://www.swmm5.net/2013/08/swmm-4-and…

### The SWMM 4 Dynamic Wave Solution for ISOL=0

The SWMM 4 Dynamic Wave Solution for ISOL=0

The SWMM 4 Dynamic Wave Solution for ISOL=0by dickinsonreThe SWMM 4 Dynamic Wave Solution for ISOL=0
The attached PDF file is a copy of the Extran 3 solution in the  SWMM 4 manual explaining the ISOL=0 solution in SWMM 4 / Extran 4.  The current SWMM 5 solution in its dynamic wave solution is an adaptive time step iterative solution of the ISOL=0 solution in SWMM 4.
via Blogger http://www.swmm5.net/2013/08/the-swmm-4-dynamic-wave-solution-for.html

### The SWMM 4 Dynamic Wave Solution

The SWMM 4 Dynamic Wave Solution

The SWMM 4 Dynamic Wave Solutionby dickinsonreThe SWMM 4 Dynamic Wave Solution The attached PDF file is a copy of Appendix C of the SWMM 4 manual explaining the three St Venant solutions in SWMM 4 / Extran 4.  The current SWMM 5 solution in its dynamic wave solution is an adaptive time step iterative solution of the ISOL Zero solution in SWMM 4.
via Blogger http://www.swmm5.net/2013/08/the-swmm-4-dynamic-wave-solution.html

### Continuous Simulation using SWMM 5 LID and Groundwater Features in a Linked 1D/2D Network using InfoSWMM 2D for a 50 Year Period

Continuous Simulation using SWMM 5 LID and Groundwater Features in a Linked 1D/2D Network using InfoSWMM 2D for a 50 Year Period
Continuous Simulation using SWMM 5 LID and Groundwater Features in a Linked 1D/2D Network using InfoSWMM 2D for a 50 Year Periodby dickinsonreContinuous Simulation using SWMM 5 LID and Groundwater Features in a Linked 1D/2D Network using InfoSWMM 2D for a 50 Year Period A poster at the recent ECI conference on the Past, Present and Future of Watershed modeling. via Bloggerhttp://www.swmm5.net/2013/08/continuous-simulation-using-swmm-5-lid.html

### The Structure of InfoSWMM in Arc Map

The Structure of InfoSWMM in Arc Map
The Structure of InfoSWMM in Arc Mapby dickinsonreThe Structure of InfoSWMM in Arc Map
via Blogger http://www.swmm5.net/2013/08/the-structure-of-infoswmm-in-arc-map.html

### How to Create an InfoSWMM model from CSV Files, Alternate Method

How to Create an InfoSWMM model from CSV Files, Alternate Method

How to Create an InfoSWMM model from CSV Files, Alternate Methodby dickinsonreHow to Create an InfoSWMM model from CSV Files, Alternate Method
An InfoSWMM model can be newly created from a CSV file but it helps to have an idea of the maximum extents before you initialize the Arc Map project.  Use the ArcGIS default and Edit the extents of your future imported network (Figure 1).  Import the CSV files (Figure 2) and define the imported variables (Figure 3) followed by an Update Map from DB (Figure 4) which will draw your imported nodes and links on the Arc Map screen.  The updated Map should be within the extents of your defined spatial reference (Figure 5).  It is important to have the proper spatial reference for your imported data in Arc Map.  If you do not have the proper extents then when you update the Map from DB you will have a warning message "The coordinates or measures are out of bounds".
Figure 1.  Imp…

### How to Create an InfoSWMM model from CSV Files

How to Create an InfoSWMM model from CSV Files

How to Create an InfoSWMM model from CSV Filesby dickinsonreHow to Create an InfoSWMM model from CSV Files
An InfoSWMM model can be newly created from a CSV file but it helps to have a background map or shapefile to initialize the Arc Map project.  BEFORE initializing yourInfoSWMM map Add a data layer using the Arc Map command Add Data.   Create a new InfoSWMM project using the same spatial reference as your added shapefile (Figure 1).  Import the CSV files (Figure 2) and define the imported variables (Figure 3) followed by an Update Map from DB (Figure 4) which will draw your imported nodes and links on the Arc Map screen.  The updated Map will have the same coordinates as the background shapefile (Figure 5).  It is important to have the proper spatial reference for your imported data in Arc Map.
Figure 1.  Import a background shape file and initialize your InfoSWMM map to the coordinates of the shapefile.

Figure 2.  Import a CSV file for bo…

### How to Search My Blogs by concentrating on one blog for Information about SWMM5, InfoSWMM and InfoSewer

How to Search My Blogs by concentrating on one Blog:   I have spent a lot of time in the last week redoing all of my tags, names and websites.   You can search SWMM5.NET or SWMM5.ORG for information on infoswmm, infosewer and of course SWMM 5  Hopefully, this makes them a bit more organized – there are a total of 900 posts as of today, but each post now has labels and multiple tags

The site http://www.swmm5.net/  has a built in Google Custom Search Engine which as even more flexibility

### How to Save Node and Link Relates in H2OMAP SWMM to Shapefiles

How to Save Node and Link Summary Tables in H2OMAP SWMM to Shapefiles

How to Save Node and Link Summary Tables in H2OMAP SWMM to Shapefilesby dickinsonreHow to Save Node and Link Summary Tables in H2OMAP SWMM to Shapefiles The export manager of H2OMAP SWMM is very flexible, you can export shape, MIF and CSV files but you have to do some copy and pasting to allow the program to export ALL of the node and pipe summary tables.  The export manager will export any node or pipe information in the DB hydraulic and information tables.  If you copy and paste, for example, the output pipe summary table to the Pipe information tables (Figure 1) then you can use the Export Manager (Figure 2) to save the shape file with tables(Figure 4) and view the shape file in Arc Map (Figure 4).  The TOC properties in Arc Map can be used to show the maximum d over D or maximum Q over Qfull values in Arc Map using this VBScript. Function FindLabel ( [DOVEMAXD] )   FindLabel = "" & FormatNumber([DOVEMA…

### How to Use the Output Relate in Excel using H2OMAP SWMM

How to Use the Output Relate in Excel using H2OMAP SWMM

How to Use the OutputRelate in ExcelusingH2OMAPSWMMby dickinsonreHow to Use the OutputRelate in Excel usingH2OMAPSWMM You have to perform the following steps: 1.       Make an OutputRelate (using the Operations Tab of the H2OMAPSWMM Browser) which will be the same as the Pipe Summary Table in the Output Report Manager
2.      Run the model to make the OutputRelate and then update the Relate (Figure 1)
3.      Using Windows Explorer navigate to the HSDB folder of your H2MAP SWMM project
4.      Continue to the Relate Subfolder and open up the Relate DBD file in Excel (Figure 2)
5.      You cannot SAVE this file but you can save is as a new Excel File Figure 1.OutputRelate in H2OMAP SWMM to use the Pipe Summary Table Figure 2.   How to Use the OutputRelate in Excel

### Annual International Conference on modeling urban water systems, Feb 21-22 2013 in Toronto - call for papers

Annual International Conference on modeling urban water systems, Feb 21-22 2013 in Toronto - call for papers
My note, this is a conference well worth attending, the Convenor is Dr Bill James and the venue is described at the CHIWater link shown below.

Once again it's the time to request one or more abstracts for the Annual International Conference on the Modeling of Urban Water Systems (formerly SWMM users meeting), to be held Feb 21-22 2013 in Toronto (note the venue). As you probably know, this is the 46th (!) meeting in this extraordinary series. This year our featured speakers include many well-known scientists, researchers and engineers (listed on our website).
The meeting is well attended: your audience exceeds 100 folks in your specialty. Also, the meeting is inexpensive, highly-regarded, professional, friendly and collaborative. Proceedings are produced as a peer-reviewed, integrated archival-quality book (you get the previous year's monograph at this conference, two-for-…

### Advanced Labeling in InfoSWMM or H2OMAP SWMM to show MM or IN on a HGL Plot

Advanced Labeling in InfoSWMM or H2OMAP SWMM to show MM or IN on a HGL Plot

Advanced Labeling in InfoSWMM or H2OMAP SWMM to show MM or IN on a HGL Plotby dickinsonreAdvanced Labeling in InfoSWMM or H2OMAP SWMM to show MM or IN on a HGL Plot
Here is how to get the maximum depth shown in millimeters or inches on a HGL Plot in InfoSWMM or H2OMAP SWMM– use the OTHER LINK Dimensions option.  You need to run the model again to have your new diameter shown on the HGL plot.  We use the output file to make the HGL plot and without a new model run the maximum depth will not be shown in either InfoSWMM or H2OMAP SWMM.   Keys: Use Other Units instead of feet or meters, and Use the Advanced Labeling in InfoSWMM or H2OMAP SWMM via Blogger http://www.swmm5.net/2013/08/advanced-labeling-in-infoswmm-or-h2omap.html

### How to Use Two Control Curves in SWMM 5 to Simulate a Head Difference Rule

Subject:  How to Use Two Control Curves in SWMM 5 to Simulate a Head Difference Rule

How to Use Two Control Curves in SWMM 5 to Simulate a Head Difference Ruleby dickinsonreSubject:  How to Use Two Control Curves in SWMM 5 to Simulate a Head Difference Rule The SWMM 5 control rules for Real Time Control (RTC) do not allow the rule to be governed by the head across the orifice but does allow rules based on the depth, head and inflow at any node.  If you have an Orifice in which you want the Orifice to be open when the head difference across the Orifice is either less than or greater than zero then and closed when the head difference is close to zero then you can use two Orifices (Figure 1) and two rules (Figure 2) to control the orifice setting for Orifice1 and Orifice2.  In attached file the two rules have the settings set to two control curves.  Orifice1 will start open and close gradually as the depth at Node UPNode increases, Orifice2 will start closed and gradually open when depth i…

### NASA computed Maps of Earth

NASA computed Maps of Earth Die NASA hat sich ‘nen neuen Supercomputer angeschafft und simuliert mit dem die Erde, heraus kommen zum Beispiel so schicke Karten wie das Ding oben, und das Teil ist keinFoto, sondern ‘ne berechnete Grafik. Whoa! This is not a photo of the Earth from some far-flung satellite. This is the output of a computer that has been programmed to take those laws of physics and apply them to the Earth. It has data about sunlight hitting the Earth (which includes variations for season); it knows about the composition of the Earth’s atmosphere and how the air’s temperature changes with latitude, longitude, and height; it can calculate how much water evaporates and where it rains or snows out; it accounts for fires, dust, the Earth’s rotation, the local geography, and even humanity’s effect on the environment. And when it’s done, it can show us what the Earth looks like under various conditions. In this case, the blue swirls over the oceans trace sea salt; green is smok…

### How to Use the Map Display for the Maximum Adjusted d/D or Maximum q/Q in an EPS InfoSewer Simulation

How to Use the Map Display for the Maximum Adjusted d/D  or Maximum q/Q in an EPS InfoSewer Simulation

How to Use the Map Display for the Maximum Adjusted d/D or Maximum q/Q in an EPS InfoSewer Simulationby dickinsonreHow to Use the Map Display for the Maximum Adjusted d/D  or Maximum q/Q in an EPS InfoSewer Simulation
You can do a Map Display of the adjusted d/D values (Figure 1)  from the Gravity Main Range Report (Figure 2) to show those pipes that are full thematically.  For example, the links in red in Figure 1 show the effect of the pump blockage and the links in green are those NOT full due to the pump blockage.  You will need to copy the adjusted d/D or the maximum q/Q values from the Range report to the Link Information Table to have some values to Map (Figure 3 and 4).   The maximum adjusted d/D or the Maximum q/Q can be mapped using the new link information (Figure 5).
Figure 1  Map Display of the Maximum Adjusted d/D from the Gravity Range Report.

### What are the LID Control Flow Source Options in SWMM 5?

What are the LID Control Flow Source Options in SWMM 5?

The SWMM 5 options for Low Impact Development (LID) controls on a Subcatchment are very flexible, exciting, possibly recursive and a completely integrated method to treat both the pervious and impervious flow.  You can send the Subcatchment runoff to either an outlet node, impervious area of the Subcatchment, the pervious area of the Subcatchment or another Subcatchment.   You can have the LID control receive a portion or all of the impervious flow OR as in the EPA SWMM 5 LID example have the LID cover the whole Subcatchment and receive both impervious and pervious flow from one or multiple upstream Subcsatchments.  For example,  Subcatchment Swale4 in Figure 1 is 100 pervious and has upstream runoff from the pervious and impervious areas of Subcatchments S1, S3 and S4 in Figure 1.  The LID can also have either an outlet node or the pervious area of the Subcatchment on which it resides.

### Inflow Time Series in InfoSewer

Inflow Time Series in InfoSewerby dickinsonreThis is how InfoSewer can use a time series of inflow at a specific node:
1.       Use a mean loading of 1 so that the values in the Inflow Time Series stay the same as your inflow units in InfoSewer (Figure 1)
Figure 1.   Load with a Pattern of Inflow will create a loading to the node based on your inflow time series.
2.      Create a PATTERN that is equal to your inflow time series 3.      The pattern has to have the same time steps as your default Run Manager Pattern option, normally this will  be one hour 4.      The factor column is your inflow in cfs, gpm, lps or mgd (Figure 2) Figure 2.  The Inflow Time Series Pattern is your Flow
5.      The Base Load should equal your Inflow Pattern (Figure 3)
Figure 3.  Base Flow from the Inflow Time Series Pattern via Blogger http://www.swmm5.net/2013/08/inflow-time-series-in-infosewer.html