Subject: Use the SWMM 5 Scatter Graph to show the Pump Curve used during the Simulation
You can use a scatter graph to show the relationship between the pump during the simulation and the Storage Depth. If the pump is on the curve based on the pump summary table then the scatter graph should look like the pump curve. The pump summary table in the SWMM 5 RPT also shows you the time off the pump curve low and high.
Earth's flora is responsible for the glaciers and rivers that have created this planet's distinctive landscape
Perhaps even more surprisingly, vascular plants formed the kinds of rivers we see around us today, according to another article by Martin Gibling of Dalhousie University in Nova Scotia and Neil Davies of the University of Ghent in Belgium, who analyzed sediment deposition going back hundreds of millions of years. Before the era of plants, water ran over Earth's landmasses in broad sheets, with no defined courses. Only when enough vegetation grew to break down rock into minerals and mud, and then hold that mud in place, did river banks form and begin to channel the water. The channeling led to periodic flooding that deposited sediment over broad areas, building up rich soil. The soil allowed trees to take root. Their woody debris fell into the rivers, creating logjams that rapidly created new channels and caused even more flooding, setting up a feedback loop that eventually supported forests and fertile plains.
"Sedimentary rocks, before plants, contained almost no mud," explains Gibling, a professor of Earth science at Dalhousie. "But after plants developed, the mud content increased dramatically. Muddy landscapes expanded greatly. A new kind of eco-space was created that wasn't there before."
Subject: How to Import the SWMM 5 Report File as a Layer in infoSWMM
The idea of this blog of note is to show how one may extract information from the SWMM 5 or InfoSWMM RPT file and import the Excel File as a feature in InfoSWMM. This blog has an example Excel file to illustrate the linkage. The steps are:
Step 1: Copy the whole row from Conduit Summary from the InfoSWMM Browser
Step 2: Add the two columns length and slope from the Link Summary Table and the InfoSWMM Browser
Step 3: You need a few calculations based on the table values from SWMM 5 to estimate the CFL time steps in the .
Step 4: Add the Excel Spreadsheet as a layer in InfoSWMM – the Named Range should be added to insure valid numbers and not Nulls after the join
Step 5: You can now plot the CFL Time Step for the Links using the Layer Properties command in Arc Map
Step 1: Copy the whole row from Conduit Summary
Step 2: Add the two columns length and slope from the Link Summary Table
Step 3: You need a few calculations based on the table values from SWMM 5 to estimate the CFL time steps.
The CFL Step = Length / (Full Velocity + (Gravity * Full Depth)^0.5)
Full Velocity = Full Flow / Full Area
You also need to create a Name A Range for you data so that the data does not show up as Nulls
Step 4: Add the Excel Spreadsheet as a layer in InfoSWMM – the Named Range should be added
Step 4: Join the Excel Table to the InfoSWMM Conduit Feature Layer
Step 5: You can now plot the CFL Time Step for the Links using the Layer Properties command in Arc Map
Subject: How to Approximate a Timer in the RTC Rules of SWMM 5
SWMM 5 does not have a explicit timer in its Real Time Control (RTC) rules but you can approximate it by using a Control Curve as in the attached example model. The Control Curve will modify the setting of the Weir by the Inflow to the Storage node. You can have normal weir flow settings based on the invert elevation of the weir and the Surface node water surface elevation but in addition you can control the weir setting by:
1. Closing the weir when the inflow is low,
2. Closing the weir by staggered Storage node depth,
3. Opening the weir gradually when the inflow increases
4. Closing the weir by a combination of Node Depth IF statements and Control Curve rules
For example, you can have the Weir Setting controlled the Node Depth, Link Inflow and Node Inflow simultaneously approximately with the depth and the inflow parameters closing the weir by proxy instead of by time since the closing.
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