Weather Underground Temperature Data and SWMM 5

Subject:  Weather Underground Temperature Data and SWMM 5

Weather Underground is a site that provides excellent local weather information in the form of graphs, tables and csv files. You can use the data very easily in SWMM 5 by copying from Excel to a time series in SWMM 5 and then use either the wind speed, precipitation or temperature in a model. 

Figure 1. Weather Underground Temperature Data

Figure 2.  Save the Data to Excel by using the Comma Delimited File Command.

Figure 3. CSV File Exported to Excel

Figure 4:  Make a SWMM 5 Time Series to Copy and Paste the Temperature from the CSV File.

The data imported from the csv file to Excel and after the text to columns tool is used looks like this in Excel. The data is now ready to be imported into SWMM 5 as is by copying and pasting from Excel to a SWMM 5 time series file.  You need to perform the following steps:

1.     Make a new SWMM 5 Time Series,

2.     Copy and Paste the Temperature data from Excel to the SWMM 5 Time Series,

3.     Use the Climatelogy Data Tab and select the new Temperature Time Series as the source of the simulation temperature,

4.     You can see the simulated temperature by graphing the System Temperature.

Figure 5. SWMM 5 Climatology Tab and the resultant System Variable Graph of the Temperature.

SWMM 5 Controls in Matrix Form

Subject:  SWMM 5 Controls in Matrix Form

Conduit Types in SWMM 5.0.021

Subject:  Conduit Types in SWMM 5.0.021

Figure 1.  24 Conduit Shapes in SWMM 5.1.002

Types of SWMM 5 Curves

Subject:  Types of SWMM 5 Curves

There are ten types of curves in SWMM 5.0.021 in seven categories accessible through the Data Tab and the Attribute Browser – including four types of Pump Curves:

1. Storage
2. Diversion
3. Rating
4. Tidal
5. Control
6. Shape
7. Pump

1. Pump1
2. Pump2
3. Pump3
4. Pump4

Figure 1: Curve Types in SWMM 5

Diversion LInks in SWMM 5 and 5.0.021

Subject:  Diversion Links in SWMM 5 and 5.0.021

Diversion links in SWMM 5 are Pumps (5 types), Orifices (2 types), Weirs (4 types) and Outlets (3 types).
  

Figure 1.  Diversion Links in SWMM 5

Types of Nodes and Links in SWMM 5 - with Emojis

Subject: 📌 Types of Nodes and Links in SWMM 5

Introduction: 🚀 SWMM 5 is a powerful tool used for simulating the hydrology and hydraulics of urban drainage systems. Central to its modeling capabilities are the nodes and links that constitute the drainage network. Let's delve deeper into understanding these critical components.

Nodes in SWMM 5 📍: Nodes are pivotal points or junctions in the drainage system where water collects and gets distributed. They can be categorized as:

1. Junctions 🚇: These are points where multiple links come together. They represent the convergence or divergence of flow paths. In SWMM 5, there's only one type of junction, but it plays a crucial role in defining the flow dynamics.

2. Storages 🛢️: Storages are areas where water is temporarily held before it's released at a controlled rate. In SWMM 5, there are three types of storage:

   • Surface Storage: Represents flat areas like ponds.
   • Tank Storage: Denotes vertical cylindrical tanks.
   • General Storage: A more flexible form that can represent any shape.

3. Dividers 🚧: Dividers distribute incoming flow into multiple paths. While they can be used in the dynamic wave solution of SWMM 5, they only help divide the flow in the kinematic wave solution. There are four types of dividers in SWMM 5, each with its unique characteristics.

4. Outfalls 🌊: Outfalls represent points where water exits the system, either into a larger body of water or another system. SWMM 5 offers five types of outfalls, each designed to simulate different outflow conditions.

Links in SWMM 5 ⛓️: Links are the channels or pathways that connect nodes and facilitate the flow of water between them. They include:

1. Conduits 🚰: These are pipes or channels that transport water between nodes. They can vary in shape, size, and material.

2. Pumps 🔄: Pumps are devices that move water from one node to another, typically from a lower elevation to a higher one.

3. Orifices ⚙️: Orifices control the flow of water between nodes based on the opening size and elevation.

4. Weirs 🌁: Weirs are barriers that redirect or measure flow. They can be sharp-crested, broad-crested, or even compound.

5. Outlets 🚪: Outlets control the discharge of water from a node based on the depth or head of water.

Conclusion 🌟: Understanding nodes and links in SWMM 5 is paramount for effective modeling. These components are the building blocks of the drainage system, and their accurate representation ensures reliable and meaningful simulation results. 📊🛠️

Figure 1.  Node and Link Objects in SWMM 5

Figure 2:  Node Objects in SWMM 5

SWMM 5.0.021 has 16 Overall Modeling Objects

Subject:  SWMM 5.0.021 has 16 Overall Modeling Objects

SWMM 5.0.021 has 16 Overall Modeling Objects divided into 4 categories:

1.   General

2.   Subcatchments

3.   Nodes

4.   Links

The objects in the General category can be applied to more than one category. For example, you can simulate pollutants either at a node or at the subcatchment level.

The objects are:

1.           Gage

2.           Links

3.           Shape

4.           Transect

5.           Nodes

6.           Unit Hydrograph

7.           Time Pattern

8.           Subcatchments

9.           Snowmelt

10.                Aquifer

11.                LID

12.                Landuse

13.                Pollut

14.                Curves

15.                Time Series

16.                Controls

Figure 1.  Modeling Objects in SWMM 5.0.021

How to Import a File from SWMM5 toH20MAP SWMM

Subject:  How to Import a File from SWMM5 toH20MAP SWMM

Step 1:  Make a new H2oMAP SWMM Network

Figure 1.  New Network Dialog.

Step 2:  Use the Exchange Tool / Import EPA SWMM 5

Figure 2. Exchange Tool in H20MAP SWMM

Step 3:  Import your EPA SWMM data file after locating it using the browser.  Click on Import.

Figure 3.  Import Dialog in H2OMAP SWMM.

Step 4:  Use the Attribute Browser,  DB Editor and Run Manager to see your data and network after import.

Figure 4.  The imported network in H2oMAP SWMM.

Tributary Area to a Node in InfoSWMM

Note:  Tributary Area to a Node in InfoSWMM

Here are the steps you neeed to take to calculate the tributary area of a node in InfoSWMM:

Step 1:  Use the DB Editor to get the total area in your model using the Data Statistics Tool.




Step 2:  Use the Process options in InfoSWMM to ONLY simulate surface runoff and flow routing.



Step 3. Copy the Node name and Total Inflow Volume from the Juntion Summary Output Table to Excel



Step 4:  Find the Total Wet Weather Flow during the simulation from the Wet Weather Inflow Row in the Flow Continuity Table.

Dry Weather Inflow   0.000  0.000
Wet Weather Inflow  0.782   0.255

Step 5. Make a new column in Excel to calculate the tributary area.

The Tributary Area of a Node = Total Inflow Volume / Total Wet Weather Flow * Total Subcatchment Area from Step 1.

You will now have the tributary area for each node.  You can verify this number = the total tributary area at the outfalls should equal the Total Subcatchment Area from Step 1.

		Maximum	Maximum
		Lateral	Total	Time	of	Lateral	Total	Tributary
		Inflow	Inflow	Occurrence	Volume	Inflow	Inflow	Area
Node	Type	CFS	CFS	days	hr:min	10^6 gal	10^6 gal	acres
P001	JUNCTION	5.54	10.86	0	2:27	0.1	0.255	14.74
P005	JUNCTION	2.14	7.42	0	2:26	0.039	0.155	8.96
P009	JUNCTION	5.78	5.78	0	2:25	0.106	0.106	6.13
P011	JUNCTION	0.7	0.7	0	2:34	0.01	0.01	0.58
OUTLET	OUTFALL	0	10.84	0	2:28	0	0.255	14.74

How to add a volume variable to SWMM 5

Subject:  How to add a volume variable to SWMM 5


The purpose of this email is to explain how to add another print variable to the DOS version of SWMM 5 so that it can saved in a table in the text output file (after you recompile the modified C code).  The changes have no impact on the SWMM 5 GUI or the SWMM 5 DLL engine.

It is relatively simple five step procedure:

Step 1:  Add a new variable LINK_VOLUME at the end of the link variables in enums.h This is much easier if you just add a report variable that already is part of the link or node structure in objects.h  Your only restriction is that is should be added before the water quality variables.
 // increase by 1 the value of Max  Results in enums.h 
#define MAX_LINK_RESULTS 7    

enum LinkResultType {
      LINK_FLOW,              // flow rate
      LINK_DEPTH,             // flow depth
      LINK_VELOCITY,          // flow velocity
      LINK_FROUDE,            // Froude number
      LINK_CAPACITY,          // ratio of depth to full depth
      LINK_VOLUME, // current volume of the conduit - august 2007
      LINK_QUAL};             // concentration of each pollutant 

Step 2:  Add the report index for LINK_VOLUME to procedure output_open in ouput.c

k = LINK_VOLUME; 
fwrite(&k, sizeof(int), 1, Fout.file);
for (j=0; j<nPolluts; j++)

Step 3: Save the link new volume to the binary output file in procedure link_get_results in link.c.  The new volume of the link has already been saved in the already existing variable newVolume in the Link Structure.

x[LINK_CAPACITY] = (float)c;
x[LINK_VOLUME]   = (float)Link[j].newVolume;

Step 4. Modify report.c to include the new report variable in procedure report_links

fprintf(Frpt.file, "\n  %11s %8s  %9.3f %9.3f %9.3f %9.1f %9.1f",                          theDate, theTime, LinkResults[LINK_FLOW], LinkResults[LINK_VELOCITY], LinkResults[LINK_DEPTH]  LinkResults[LINK_CAPACITY]* 100.0,LinkResults[LINK_VOLUME]);

Step 5.  Modify procedure report_LinkHeader in report.c to show the new variable volume:

fprintf(Frpt.file,
"\n                             Flow  Velocity     Depth   Percent      Volume");
"); 

Rain Barrel LID Summary

Subject:  Rain Barrel LID Summary

Rain Barrel LID Summary

Rain Barrel LID Fluxes in SWMM 5.0.021

Subject:  Rain Barrel LID Fluxes in SWMM 5.0.021

The fluxes are limited in a Rain Barrel Low Impact Development (LID) control in SWMM 5.  The fluxes only include (Figure 1 and Figure 2):

1.      Total Inflow,
2.      Surface Outflow,
3.      Drain Outflow and
4.      Final Storage

The fluxes are also listed in the LID Performance Summary Table in the output text file.

  ***********************
  LID Performance Summary
  ***********************


  ----------------------------------------------------------------------------------------------------------
                                   Total      Evap     Infil   Surface    Drain      Init.     Final     Pcnt.
                                  Inflow      Loss      Loss   Outflow   Outflow   Storage   Storage     Error
  Subcatchment      LID Control       in        in        in        in        in        in        in
  -----------------------------------------------------------------------------------------------------------
  S1                RainBarrels    110.95      0.00      0.00     62.95     28.15      0.00     23.11    -2.94

Figure 1. Flux Pathways for a Rain Barrel LID

Figure 2. Rain Barrel LID Fluxes