Surface Ponding
Normally in flow routing, when the flow into a junction exceeds the capacity of the system to transport it further downstream, the excess volume overflows the system and is lost. An …
Surface Ponding in SWMM5
Robert Dickinson, Product Sector Leader with @Innovyze for InfoSWMM, and InfoSewer + SWMM5
Hydrology/Hydraulic Modeler && Co-Developer of [#SWMM 3,4,5,6, #XPSWMM] && @Innovyze [#InfoSWMM, ICM, #InfoSewer, #RDII, #Quality, #LID, #GA] - #SWMM5 Features]
Surface Runoff in InfoSWMM and InfoSWMM SA
Surface Runoff in InfoSWMM
InfoSWMM offers 12 choices for modeling surface runoff (click on link to see more information on each method):
…Refactoring the SWMM 5 Help File – Study Area Map in SWMM5
Study Area Map in SWMM5
| SWMM’s Main Window |
SWMM’s main window is pictured below. Click on a labeled element to learn more about it.
| Map Toolbar |
The Map Toolbar contains buttons for viewing …
SWMM4 Fortran Changes post September 28, 1999
This file documents changes made to swmm44gu by Wayne Huber or others
since its first release on September 28, 1999.
WCH = Wayne Huber
RED = Robert Dickinson
CIM = Chuck Moore
MCH …
Refactoring the SWMM 5 Help File – RDII in SWMM5
RDII in SWMM5
| Unit Hydrographs |
Unit Hydrographs (UHs) estimate rainfall-dependent inflow/infiltration (RDII) into a sewer system. A UH set contains up to three such hydrographs, one for a short-term response, one for an …
Refactoring the SWMM 5 Help File – SWMM5 Introduction
| Introducing EPA SWMM5 |
The EPA Storm Water Management Model (SWMM) is a dynamic rainfall-runoff simulation model used for single event or long-term (continuous) simulation of runoff quantity and quality from primarily urban areas. …
Refactoring the SWMM 5 Help File – Snowmelt in SWMM5
Snowmelt in SWMM5
| Snowmelt |
Snowmelt parameters are climatic variables that apply across the entire study area when simulating snowfall and snowmelt. They include:
| · | the air temperature at which precipitation falls as snow |
Refactoring the SWMM 5 Help File – Tools in SWMM5
Tools in SWMM5
| Using Add-In Tools |
SWMM 5 has the ability to launch external applications from its graphical user interface that can extend its capabilities. This section describes how such tools can be …
Refactoring the SWMM 5 Help File -Editing in SWMM5
Editing in SWMM5
| Working with Objects |
SWMM uses various types of objects to model a drainage area and its conveyance system. This section describes how these objects can be created, selected, edited, deleted, …
Refactoring the SWMM 5 Help File – Routing in SWMM5
Routing in SWMM5
| Flow Routing |
Flow routing within a conduit link in SWMM is governed by the conservation of mass and momentum equations for gradually varied, unsteady flow (i.e., the Saint Venant flow …
Refactoring the SWMM 5 Help File – Output in SWMM5
Output in SWMM5
| Viewing Simulation Results |
This section describes the different ways in which the results of a simulation can be viewed. These include a status report, a summary report, various map views, …
Refactoring the SWMM 5 Help File – Climate Data in SWMM5
Climate Data in SWMM5
| Climatology |
The Climatology object in EPA SWMM describes the following climate-related variables used for computing runoff and snowmelt:
| · | Temperature |
| · | Evaporation |
| · | Wind Speed |
| · | Snowmelt |
| · | Areal |
Refactoring the SWMM 5 Help File – Groundwater in SWMM5
Groundwater in SWMM5
| Aquifers |
Aquifers are sub-surface groundwater zones used to model the vertical movement of water infiltrating from the subcatchments that lie above them. They also permit the infiltration of groundwater into …
Refactoring the SWMM 5 Help File – Non Visual Objects in SWMM5
Non-Visual Objects in SWMM5
| Non-visual Objects |
In addition to physical objects that can be displayed visually on a map, SWMM utilizes several classes of non-visual data objects to describe additional characteristics and processes …
Refactoring the SWMM 5 Help File – Links in SWMM5
Links in SWMM5
| Links |
Links are the conveyance components of a drainage system and always lie between a pair of nodes. Types of links include:
| · | Conduits |
| · | Pumps |
| · | Regulators |
| Conduits |
Conduits…
Refactoring the SWMM 5 Help File – Nodes in SWMM5
Nodes in SWMM5
| Nodes |
Nodes are points of a conveyance system that connect conveyance links together. There are several different categories of nodes that can be employed:
| · | Junctions |
| · | Outfalls |
| · | Flow |
Refactoring the SWMM 5 Help File – Water Quality in SWMM5
Water Quality in SWMM5
| Water Quality Modeling Features |
In addition to modeling the generation and transport of runoff flows, SWMM can also estimate the production of pollutant loads associated with this runoff. The …
Refactoring the SWMM 5 Help File – Toolbars and Menus in SWMM5
Toolbars and Menus in SWMM5
| Main Menu |
The Main Menu located across the top of the SWMM main window contains a collection of menus used for working with the program. These include:
| · |
Refactoring the SWMM 5 Help File – Hydrology in SWMM5
Hydrology in SWMM5
| Hydrologic Modeling Features |
SWMM accounts for various hydrologic processes that produce runoff from urban areas. These include:
| · | time-varying rainfall |
| · | evaporation of standing surface water |
| · | snow accumulation and |
Refactoring the SWMM 5 Help File – Files in SWMM5
Files in SWMM5
| Files Used by SWMM |
This section describes the various files that SWMM can utilize. They include:
| · | Project File |
| · | Report and Output Files |
| · | Rainfall Files |
| · | Climate File |
Refactoring the SWMM 5 Help File – LID’s In SWMM5
LID’s in SWMM5
| LID Control Editor |
The LID Control Editor is used to define a low impact development control that can be deployed throughout a study area to store, infiltrate, and evaporate Subcatchment …
Refactoring the SWMM 5 Help File – Projects in SWMM5
Projects in SWMM5
| Project File |
A SWMM Project File is a plain text file that contains all of the data used to describe a study area and the options used to analyze it. …
Refactoring the SWMM Help File – Printing in SWMM5
Printing in SWMM5
| Printing and Copying |
This section describes how to print, copy to the Windows clipboard, or copy to file the contents of the currently active window in the SWMM workspace. This …
Refactoring the SWMM Help File – RTC or Control Rules in SWMM5
Controls in SWMM5
| Control Rules |
Control Rules determine how pumps and regulators in the conveyance system will be adjusted over the course of a simulation. The use of control rules is explained in …
Refactoring the SWMM Help File – Error and Warning Messages in SWMM5
Error and Warning Messages in SWMM5
| Troubleshooting Results |
When a run ends prematurely, the Run Status dialog will indicate that the run was unsuccessful and direct the user to the Status Report for …