A rise in Pipe Inverts Across a SWMM 5 Node, What Node and Link Invert Elevations Does SWMM 5 Use?

A rise in Pipe Inverts Across a SWMM 5 Node

Subject:  This is how SWMM 5 handles  jumps in pipe invert across a node. 

 The water surface in the node determines the flow in the link, as the depth increases due to upstream inflow eventually the downstream link will start flowing.

What Node and Link Invert Elevations Does SWMM 5 Use?

Note:  What Node and  Link Invert Elevations Does SWMM 5 Use?

SWMM 5 uses the following Node information from the user:

·         Node Invert Elevation,

·         The Node Rim Elevation which is the Node Invert Elevation + the Maximum node depth

·         The Ponded Area when the Ponded  Area option is used

·         The Surcharge Depth above the Node Rim Elevation

SWMM 5 uses the following link information from the user:

·         The Link Upstream Offset Depth or Offset Elevation and

·         The Link Downstream Offset Depth or Offset Elevation

·         The Link Maximum Depth or Diameter

SWMM 5 calculates the following information internally:

·         The Pipe Crown Elevation at the upstream and downstream link nodes.  The Pipe Crown is the Pipe Diameter + Link Offsets

·         The Node Highest Pipe Crown Elevation,

·         The Surcharge Depth above the Rim Elevation if the Node has a Surcharge Pressure Depth at the Node during the simulation,

o   If the Surcharge Depth is 0 then the program will either lose the flooded water or store the flooded water during the simulation

·         The Flooded Depth above the  Rim Elevation if the Node uses the Ponded Area Option

o   You have to enter a Ponded Area for the node AND use the Global Allow Ponding Option

SWMM 5 Rules for Pipes

·         The Pipe Invert Cannot be below either upstream or downstream node invert – the program will print a warning in the rpt file and set the offset to 0 internally,

·         The Pipe Crown Cannot be above the Rim Elevation of the Node – the program will raise the Rim Elevation when this happens and print a warning in the rpt file.

The use of Offset Depth or Offset Elevation for the Link Offsets is based on the user choice at the bottom of the SWMM 5 GUI Map.

Or in the Tools/Preference/Operation dialog of InfoSWMM/H20MAP SWMM 

Why Prolonged #Sitting And Standing Is Unproductive

@RDICKINSON for @Innovyze on @Medium or my Modeling Posts on Medium

This is a 2014 blogging experiment - a new set of posts on Medium.  I got the idea from @boonsri  The blogs describe @Innovyze software and SWMM5

https://medium.com/@rdickinson

Robert E Dickinson

Showing Multiple Link Attributes in InfoSewer

This blog shows how to display multiple link parameters.

The 1st method would be to use Arc Map Layer properties and label multiple parameters for each gravity main or force main.  The image below shows and example and here is the code inside of Arc Map to do this

Function FindLabel ( [DIAMETER], [Pipe.SHAPE_Length], [COEFF] )
  FindLabel = [DIAMETER] & " m / "  & " " & [Pipe.SHAPE_Length]  &  " m / n "   & [COEFF] 
End Function

Arc Map Label Annotation

Or 

Function FindLabel ( [DIAMETER], [Pipe.SHAPE_Length], [COEFF] )
  FindLabel = " D= " & [DIAMETER] & " m / L="  & " " & [Pipe.SHAPE_Length]  &  " m / n "   & [COEFF] 
End Function
 

Label Properties in Arc Map or Arc GIS

The 2nd method is to use Annotation and Map Display in InfoSewer

If you want to show both pipe diameter and slope on the map of InfoSewer you will have to workaround the limitation of having only one map variable:
1. You can map the diameter using Map Display and then
2. Use the Annotation tool to show the 2nd variable such as Length or slope.
3. Here is an example with different colors for diameter and length

Map Display and Annotation in InfoSewer

InfoSWMM 2D Version 13 Brings Significant 1D and 2D Simulation Advancements To Power Users

Latest Release Confirms Product as Leading GIS-centric Urban Drainage Modeling and Management Solution

Broomfield, Colorado, USA, November 18, 2014

Innovyze, a leading global innovator of business analytics software and technologies for smart wet infrastructure, today announced the worldwide availability of the V13 Generation of its industry-leading InfoSWMM 2D for ArcGIS (Esri, Redlands, CA). InfoSWMM 2D delivers new ways to quickly and accurately build and analyze very large and comprehensive two-dimensional (2D) models that reliably simulate complex urban stormwater, sanitary sewers, river flooding and pollutant transport. It allows users to accurately predict the extent and duration of urban and rural flooding for comprehensive stormwater management directly within the powerful ArcGIS environment.

A fully hydrodynamic geospatial stormwater modeling and management software application, InfoSWMM 2D can be used to model the entire land phase of the hydrologic cycle as applied to urban stormwater systems. Built atop ArcGIS and using exceptionally robust and efficient numerical simulation capabilities, the model can perform single-event or long-term (continuous) rainfall/runoff simulations accounting for climate, soil, land use, and topographic conditions of the watershed. In addition to simulating runoff quantity, InfoSWMM 2D can reliably predict runoff quality, including buildup and washoff of pollutants from primarily urban watersheds. It also features very sophisticated Real-Time Control (RTC) schemes for the operational control and management of hydraulic structures.

A hallmark of InfoSWMM 2D is its dynamic integration of one-dimensional (1D) hydrodynamic simulation of flows in open channels, HEC-22 inlets and closed pipe networks with two-dimensional (2D) hydrodynamic simulation of surface runoff, evaporation, infiltration and flooding in the urban environment. The dynamic integration, achieved through an explicit coupling of 1D and 2D flow equations, provides a powerful solution for simultaneously modeling belowground and aboveground elements of watersheds to accurately represent all flow paths and improve understanding of holistic processes. InfoSWMM 2D also directly simulates the rainfall and infiltration on both the watershed and the 2D surface to better simulate 1D flooding, 2D surface flooding, 2D shallow groundwater recharge and complex 1D and 2D surface interactions.

The full 2D free-surface shallow water equations are solved using a highly advanced finite volume method, which is particularly suitable for rapidly varying flood flows such as those moving through steep streets and road junctions and those associated with bank overtopping or breaching. The unparalleled 1D/2D dynamic linking capabilities of InfoSWMM 2D give engineers the unprecedented power to analyze and predict potential flood extents, depth and velocity and accurately model the interaction of surface and underground systems in an integrated 1D/2D environment. The software can be used to simulate point sources, 2D boundaries, multiple 2D mesh and simulation polygons in a sewer or stormwater network. The combined water level and velocity results throughout the flooded areas can be viewed as various comprehensive graphs; tables; or animated, thematic flood maps.

Among its many new enhancements, Version 13 uses a significantly improved 2D simulation engine, the flexible InfoSWMM ArcMap polygon tools, a 1D InfoSWMM engine based on the latest EPA SWMM 5.1, a new 1D and 2D graphics engine and a comprehensive Output Report Manager and Statistical Event Manager for both 1D and 2D output. In addition, the new release allows users to instantly visualize the maximum extent of flooding in vivid 2D and 3D maps.

“We’re deeply committed to providing a geospatial modeling experience that is both intuitive and powerful, and InfoSWMM 2D V13 embodies that commitment,” said Paul F. Boulos, Ph.D., BCEEM, NAE, Hon.D.WRE, Dist.D.NE, F.ASCE, President, COO and Chief Technical Officer of Innovyze. “This release delivers major geotechnological and computational enhancements in short release cycles to make sure our customers are always equipped with the ultimate ArcGIS-centric decision support tool for stormwater and urban drainage systems. It greatly extends the core features of InfoSWMM, providing the most powerful and comprehensive ArcGIS-centric tool kit ever for managing the risks of urban and rural flooding. This is a must have for effectively controlling and managing sanitary sewer and combined sewer overflows.”

Arc Map Backwards Compatibility for InfoSWMM

Arc Map Backwards Compatibility for InfoSWMM:

1. Use windows explorer to, make a zero byte mxd file with the same name as your isdb folder, 
2. click on the blank mxd file and initialize InfoSWMM or InfoWater, 
3. Use the Table of contents to zoom to an InfoSWMM layer, 
4. fix the extents of the map in arc gis by using Data Frame, 
5. save the Arc Map to make a model in your version of Arc Map

Three Key Parameters in InfoSWMM/SWMM5 for Time Steps, Iterations Tolerance

Three Key Parameters in InfoSWMM/SWMM5 for Time Steps, Iterations, Tolerance pic.twitter.com/YbqWmCksu6
— Robert E Dickinson (@RDickinson) November 16, 2014

Three Key Parameters in InfoSWMM/SWMM5 for Time Steps, Iterations, Tolerance pic.twitter.com/YbqWmCksu6
— Robert E Dickinson (@RDickinson) November 16, 2014

InfoSWMM/SWMM5 Variable Time Step used with the 3 Key Parameters pic.twitter.com/lsXgQgRbPD
— Robert E Dickinson (@RDickinson) November 16, 2014

The 10 year Anniversary of the release of EPA SWMM 5

A colleague mentioned that this is the 10th year anniversary of EPA SWMM 5. I thought this important or noteworthy anniversary was worthy of a short blog.

The release dates for SWMM 5 are from

http://www2.epa.gov/sites/production/files/2014-10/epaswmm5_updates_0.txt

which is in the download section of the EPA SWMM site 

-----------------------

Build 5.0.002 (11/1/04)

-----------------------

Engine Updates

1. Modifications made to the Picard method used for dynamic wave

   flow routing routine.

------------------------

Build 5.0.001 (10/29/04)

------------------------

First official release of SWMM 5.

since there were 4 releases during a 4 week period, it might be better to consider the whole month the release date for SWMM 5.0.001 to SWMM

5.0.004

Wikipedia has the whole timeline of SWMM 1/2/3/4/5

http://en.wikipedia.org/wiki/Storm_Water_Management_Model

More about the ten year anniversary and the 25 year anniversary of EPA SWMM in 1996 here

https://www.openswmm.org/Home/Search/?Year=-1&Query=anniversary&UnansweredQuestions=false&Source=

Legacy SWMM 5 and SWMM 5.1 Installs

I have a somewhat hidden website on Ning with this URL

http://swmm5code.ning.com/

that has legacy SWMM 5 and SWMM 5.1 installs for the interested

Here is what the site looks like - the text box or blog feature you will want is on the right at the top

Legacy SWMM 5 and SWMM 5.1 Installs