Showing posts from August, 2015

How to use the Flow Splitter in InfoSewer for Dendritic Networks

Subject: How to use the Flow Splitter in InfoSewer for Dendritic NetworksInfoSewer, which is an extension in Arc Map, does need to have slit split defined where gravity mains merge together to determine the amount of flow in each of the downstream conduits (Figure 1).   The options for the flow splitter in each of the downstream links are:
1. Automatic Allocation
2. Fixed Flow Percentage
3. Variable Flow Percentage and
4. Inflow-Outflow Curve
At an outfall where the invert of the outfall pipe is raised compared to the inverts of the incoming and outgoing pipes a flow split of Variable Flow Percentage or Inflow/Outflow curve may work better (Figure 2). Figure 1. Options for Performing a Flow Split in InfoSewer
Figure 2.  The Effect of the flow split can be used to model complex situations in a dendritic model with outfalls.

Advanced Force Network Support in InfoSewer for Steady State and EPS

Advanced Force Network Support in InfoSewer for Steady State and EPS EPS and Steady State FM Options Simulation Options for the Advanced ForceMain Network Support The Advanced Force Network Support allows the simulation of multiple upstream and downstream force mains entering and leaving one chamber junction during an Extended Period Dynamic Simulation or EPS solution in Sewer. All of the force mains, pumps, wet wells and force main chamber junctions that are connected are considered as one force main network in the EPS and steady state solution. You can have more than one force main network in a large Sewer model separated by gravity pipes and loading manholes. The individual force main networks are solved iteratively with different upstream head and downstream tail manholes which connect the force main network(s) to the rest of the network. A force main network consists of the following elements: · Wet well · Pump · Junction Chamber · Head Manhole where flow from other parts of the sewer sy…

InfoSewer - Minimum Travel Distance

InfoSewer - Minimum Travel Distance
Note:   The minimum travel distance in an InfoSewer or H2OMap Sewer model can be related to the mean link length in the Pipe DB Table.  Here is a table of the Mass balance check for one network versus the minimum travel distance in feet for the default values of network accuracy, minimum time length and maximum number of segments at a report time step of 1 hour.   As you can see making the Minimum Travel equal to the mode of the length histogram yields the best results even for the default model parameters. Minimum Travel DistanceMass Balance Check:Label110.50(%)53.25(%)106.25(%)2017.34(%)257.05(%)301.38(%)401.07(%)501.07(%)551.05(%)583.87(%)603.34(%)750.55(%)803.09

How to Make a SWMM 5 Calibration File from InfoSWMM

How to Make a SWMM 5 Calibration File from InfoSWMM Subject:  How to Make a SWMM 5 Calibration File from InfoSWMM 1st Step:  Graph a Link  in InfoSWMM using the Date /Time Format 2nd Step:  Click on the Report Button and copy the 1st two columns of data 3rd Step:  Save the  copied columns to a data file, replace the semi colon and add the name of the link  to the top of the data file as shown below 4th Step:  Connect the created calibration data file t o the SWMM 5 Calibration Data Link Flow Rate 5th Step:  Run the  Simulation and you should see two  graphs on the screen for the designated link EPA SWMM 5 Calibration Files The EPA SWMM 5 calibration file is only for comparing the following 12 internal variables graphically to either SWMM 4 results, monitored data or some other model results: Subcatchment RunoffSubcatchment WashoffNode Water DepthLink Flow RateNode Water QualityNode Lateral InflowNode FloodingGroundwater FlowGroundwater Elevation

How to Use the Arc Map Editor in InfoSWMM

How to Use the Arc Map Editor in InfoSWMM
Note:  How to Use the Arc Map Editor in InfoSWMM
Step 1 is to use the Edit Feature for example the Subcatchment layer to bring up the Arc Map Editor Tool.
Step 2 is to use the Reshape Feature tool or Vertex tools to bring together mis matched Subcatchment Boundaries
Step 3 is to use save the edits and then Update the DB from the Map to recalculate the area of the Subcatchments
Subject: InfoSWMM and Arc GIS for Create Graphs Using Network Data and Model Results An important advantage of using InfoSWMM is the ability to use all of the Arc GIS layer and programming tools.  For example, you can graph the model results in Bar,  Pie, Scatter, Bubble or other types of Graphs once the model data and model result layers are Joined together.  The image below shows a thematic mapping for Node Flooding, Conduit Force Main Type and a Pie and Bar Chart of Node Flooding Time and the Q Full in the links, respectively.
The Structure of InfoSWMM in Arc Map

You can see on your iPhone as well as

You can see on your iPhone as well as — Robert E Dickinson (@RDickinson) August 22, 2015

EPA SWMM 5.1.010 Build 5.1.010 Update with Images

------------------------ Build 5.1.010 (08/05/15) ------------------------- SourceEngine Updates: 1. A modified version of Green-Ampt infiltration (MODIFIED GREEN AMPT) was added that no longer redistributes upper zone moisture deficit during low rainfall events. The original authors of SWMM's Green-Ampt model have endorsed this modified version. It will produce more infiltration for storm events that begin with low rainfall intensities, such as the SCS design storm distributions. 2. A new type of weir, a ROADWAY weir, has been added. It models roadway overtopping using the FHWA HDS-5 method and would typically be used in parallel with a culvert conduit. 3. Rule premises can now test whether a link has been open (or closed) for a specific period of time. See the Help file for more details. 4. Unsaturated hydraulic conductivity ("K") was added to the list of variables that can be used in a user-supplied groundwater flow equation…

SWMM5 or the Storm Water Management Model from Wikipedia - for Translation Purposes

Storm Water Management Model From Wikipedia, the free encyclopedia

The United States Environmental Protection Agency (EPA) Storm Water Management Model (SWMM)[1][2][3][4][5][6][7] is a dynamic rainfall–runoff