Month: August 2013

UK Environment Agency Study Confirms Leading Capabilities of InfoWorks ICM

Press Room | Products | News | Events | The Company   UK Environment Agency Study Confirms Leading Capabilities of InfoWorks ICM Innovyze Smart Integrated Catchment Solution Excels in Examination of Two-Dimensional Modeling Solutions Broomfield, Colorado, USA, August 20, 2013 — Innovyze, a […]

How to use the Report Feature of the HGL Plot in InfoSWMM

Subject:   How to use the Report Feature of the HGL Plot in InfoSWMM   The report feature of the HGL plot helps you understand in more detail the pump flows, forcemain flows and node heads.   Step 1. Load the Domain in the HGL Plot using Report Manager     Step 2. Click on the Report Command to Show […]

How to Set Up Hot Start Files in InfoSWMM for a Fixed Boundary Outfall

Subject:  How to Set Up Hot Start Files in InfoSWMM for a Fixed Boundary Outfall If you have a fixed boundary outfall condition in your model and want to prevent reverse flow when you run your simulation the best way is to use the Hot Start files to fill up the links and nodes […]

H2OMAP Sewer and InfoSewer DB Queries to find Loading Manholes

Subject:   H2OMAP Sewer and InfoSewer DB Queries to find Loading Manholes   This Database Query (DB) will find all loading Manholes with a Load1 and a Load2 greater than 0.  InfoSewer has up to ten possible loads in a Manhole.  You can use the DB Query (Figure 1) to create a Query […]

SWMM 5 QA and Application Manuals on the EPA Web Site

Subject:   SWMM 5 QA and Application Manuals on the EPA Web Site   The EPA Web Site has three manuals that you can download at   1.   SWMM Applications Manual 2.   SWMM 5 Quality Assurance Report 3.   SWMM 5 Users Manual   via Blogger

Aquifer and Groundwater Objects in SWMM 5

  Subject:   Aquifer and Groundwater Objects in SWMM 5 There are two types of data objects in SWMM 5 to describe the Groundwater flow component.  There is a Groundwater data object associated with a Subcatchment that describes flow equations, the interaction between the Subcatchment infiltration and the Groundwater component and an Aquifer data […]

Three Hidden Secrets to Speeding up your SWMM 5, H2OMAP SWMM or InfoSWMM Model

   Minimum Time Step               Average Time Step        Maximum Time Step   Minimum Time Step (sec)             0.984 Average Time Step (sec)              9.071 Maximum Time Step (sec)            30.000 Percent in Steady State (%)          0.000 Average Iterations per Time […]

Elevation Interpolation from a Contour in H2OMAP SWMM

Subject:  Elevation Interpolation from a Contour in H2OMAP SWMM   The node invert elevation or the node maximum depth can be interpolated if you use the Elevation Interpolation Tool inH2OMAP SWMM.   Steps Action 1.   Make a Contour Plot of the Node Invert Elevations. 2.   The Created Contours are […]

How to see what you have in the various scenarios of InfoSWMM

Subject:  How to see what you have in the various scenarios of InfoSWMM   How to see what you have in the various scenarios – a tool I use a lot is Scenario Explorer which shows you how to see thevarious datasets associated with a data set along with the relationship between the Base and Various Child Scenarios.     […]

SWMM 5 Inlet Control Culvert Equations

Subject:   SWMM 5 Inlet Control Culvert Equations   The newer option for SWMM 5 culverts uses three culvert classifications and associated equations to compute the inletcontrolled flow into a culvert using the FHWA (1985) equations.  The culvert code in the culvert.c code of SWMM 5 uses:   1.   Two Equations for Unsubmerged culvert flow, 2.   One Equation for the Transition flow, and 3.   One Equation […]

High and Low Estimates of ICM Subcatchment Dimension for SWMM Hydrology

High and Low Estimates of ICM Subcatchment Dimension for SWMM Hydrology   These are the estimates for both SWMM 5, InfoSWMM and ICM SWMM Hydrology, the low estimate is 0.2*SQRT(Area in Feet) and the High Estimate is 5*SQRT(Area in Feet), Figure 1.  You can use higher or lower numbers to calibrate to monitored […]

How are Flooded Time, Surcharged Time and Flooded Volume Calculated in InfoSWMM and H2OMAP SWMM?

How are Flooded Time, Surcharged Time and Flooded Volume Calculated in InfoSWMM and H2OMAP SWMM?   The time, volume and flooded rate shown in the InfoSWMM and H2OMAP SWMM Report File Node Flooding Summary (Figure 2) are calculated as follows (Figure 1):   For […]

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   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 […]

InfoSWMM 2D Report Variables

InfoSWMM 2D Report Variables   The Junction Graph variables for 2D Depth, 2D Speed, 2D Froude Number, 2D Unit Flow, 2D Inflow, 2D Volume and 2D Angle for a InfoSWMM 2D simulation for up to 1000 years can be plotted in the Report Manager of InfoSWMM.  This is an image of the 2D inflow over a 10 year period […]

How Does Green Ampt Cumulative Event Infiltration work in SWMM 5?

Subject:   How Does Green Ampt Cumulative Event Infiltration work in SWMM 5?   This graph shows the values of the internal SWMM 5 parameters for Green Ampt Infiltration for the pervious area of a Subcatchment during a simulation.  The parameters are:   ·         F or FTOT which is the cumulative event infiltration at the […]

How is Capillary Suction Head Used in SWMM 5 Green-Ampt?

Subject:   How is Capillary Suction Head Used in SWMM 5 Green–Ampt?   How sensitive is the infiltration loss and rate to the capillary suction head parameter in the SWMM 5 Green–Ampt  infiltration method.   Figure         1 shows how the total infiltration loss and total loss rate vary as […]

How is the Soil Saturated Conductivity Used in SWMM 5 Green-Ampt?

Subject:   How is the Soil Saturated Conductivity Used in SWMM 5 Green–Ampt?   How sensitive is the infiltration loss and rate to the Soil Saturated Conductivity parameter in the SWMM 5 Green–Ampt  infiltration method.   Figure 2 shows how the total infiltration loss and total loss rate vary as […]

There are Four factors in Rainfall Dependent Infiltration and Inflow or RDII in SWMM 5

There are Four factors in Rainfall Dependent Infiltration and Inflow or RDII in SWMM 5: 1.   The fractional response to Rainfall or R from 0 to 1 2.   The Time Base of the Unit Hydrograph or T in hours * Dimensionless K Shape Factor 3.   The Sewershed Contributing Area in […]

Types of Stormwater Inlets from HEC12 and HEC22

Note:  Types of Stormwater Inlets from HEC12 and HEC22   Stormwater Inlets consist of four main types ( with most common shown in Figure 1.   1.   Curb opening inlets either at a sag or continuous on the street, 2.   Grate Inlets either at a sag or in combination with […]

How to Easily Make a Smaller Model in InfoSWMM Using Trace Upstream Network

Subject:   How to Easily Make a Smaller Model in InfoSWMM Using Trace Upstream Network   Step 1.  Use the Trace Upstream Network command to find all of the network above the node of interest (Figure 1).  Step 2.  Use the Trace Downstream Network Command to find all of the network below the node of interest […]

How is the Orifice Setting Used in SWMM 5 RTC Rules?

Subject:  How is the Orifice Setting Used in SWMM 5 RTC Rules?   The Real Time Control Rule for Orifice Setting can be a function of a Setting constant, Setting from a Curve, Setting from a PID controller and a Setting from a Time Series (Figure 1).    The Setting affects the Full Depth […]

Low Impact Development Options in H2OMAP SWMM and InfoSWMM

Subject:  Low Impact Development Options in H2OMAP SWMM and InfoSWMM   The five options are:   1.       Rain Barrel 2.      Bio Retention Cell 3.      Infiltration Trench 4.      Vegetative Swale 5.      Porous Pavement   and be entered as controls in the Hydrology Section of the Operations Browser of H2OMAP SWMM or InfoSWMM (Figure 1) […]

Rules for NRSCS Unit Hydrographs in InfoSWMM and H2OMap SWMM

Subject:  Rules for NRSCS Unit Hydrographs in InfoSWMM and H2OMap SWMM   Rules or Guidelines for NRSCS Unit Hydrographs if used as the Hydrology Option in InfoSWMM and H2OMAP SWMM: 1.       The Unit Hydrograph CN comes from the Subcatchment Table and the NRCS_CN Column 2.      Time of Concentration is from the TC column in […]

How to Use the Output Relate in Excel using H2OMAP SWMM

How to Use the Output Relate in Excel using H2OMAP SWMM You have to perform the following steps: 1.       Make an Output Relate (using the Operations Tab of the H2OMAP SWMM Browser) which will be the same as the Pipe Summary Table in the Output Report Manager2.      Run the model to make […]

InfoSewer Minimum Travel Time Sensitivity

InfoSewer Minimum Travel Time Sensitivity   The three Run manager parameters, Maximum Number of Segments, Minimum Travel Distance and the Minimum Travel Time in InfoSewer and H2OMAP Sewer affect the shape and flow attenuation of the flow in a link.  The effect of decreasing the Minimum Travel Time is […]

InfoSewer By Discharge Control for a PUMP

InfoSewer By Discharge Control for a PUMP You can control the pumps in InfoSewer and H2OMap Sewer by using a Pump Control which will control the pump based on: 1.       Volume2.      Level3.      Discharge4.      Inflow5.      Time If you use a By Discharge control the pump speed of the pump is increased or decreased to pump the incoming Wet Well flow based on the pump rules […]

InfoSewer Inflow Control for a PUMP

InfoSewer Inflow Control for a PUMP   You can control the pumps in InfoSewer and H2OMap Sewer by using a Pump Control which will control the pump based on:   1.       Volume 2.      Level 3.      Discharge 4.      Inflow 5.      Time   If you use a By Inflow control the pump speed of the pump is increased or decreased […]

Maximum HGL Head Class in InfoSWMM AND H2OMAP SWMM

Maximum HGL Head Class in InfoSWMM AND H2OMAP SWMM You can find the node flood or surcharge maximum occurrence during a simulation in the Junction Summary Report table in InfoSWMM and H2OMAP SWMM (Figure 1) Empty                                   if the Node Head is below or equal to the Lowest Link Connecting  […]

The Non Linear Term in the Saint Venant Equation of SWMM 5

Subject: Non Linear Term in the Saint Venant Equation of SWMM 5 The flow equation has six components that have to be in balance at each time step: 1. The unsteady flow term or dQ/dt 2. The friction loss term (normally based on Manning's equation except for full force mains), 3. The bed slope term or dz/dx […]

How to Have both Depth and Elevation for the Node Rim Elevation in InfoSWMM

Subject:  How to Have both Depth and Elevation for the Node Rim Elevation in InfoSWMM   If you turn on  store Absolute Junction Rim option  then the Rim Elevation = Invert Elevation + Maximum Node Depth will be shown in the DB Table Junction Hydraulic Modeling Data and the Attribute Browser of InfoSWMM and H2OMAP SWMM   […]

Connecting to Others Using Twitter, LinkedIn and Blogs for SWMM5, InfoSWMM and InfoSewer

Twitter besides being 140 characters of greatness has many third party tools such as Tweet Topic Exploreer which allows you to see visually your Tweets by subject, I found it handy to see the interrelationships of […]

How to Use Trace Upstream, Domain Manager and Facility Manager in InfoSewer to Find the CE

Subject:   How to Use Trace Upstream, Domain Manager and Facility Manager in InfoSewer to Find the CE   InfoSewer does not have table of node continuity errors only an overall continuity error balance.  If you have a continuity error then you can use the process of divide and conquer […]

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 Residence Time b.      DT or Time Step c.       FLOW or The Current Inflow d.      DEPTH or […]