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Leaping Weir Example in SWMM 5 and InfoSWMM, Alternative
This is an example SWMM 5 model that can be imported into InfoSWMM or H2OMap SWMM using the Exchange/Import Command. The low flow falls over the berm of the leaping weir into a rectangular o
SWMM5 and Python
Here a a few links to connecting SWMM 5 using Python code
http://assela.pathirana.net/SWMM5-Python
http://pypi.python.org/pypi/SWMM5/
http://code.google.com/p/swmm5-ea/
http://code.activestate.com/lists/python-tutor/81516/
Read more…Stopping Tolerance in InfoSWMM, H2OMAP SWMM and SWMM5 Internal Units
Stopping Tolerance in InfoSWMM, H2OMAP SWMM and SWMM5 Internal Units
InfoSWMM, H2OMAP SWMM and SWMM 5 share the same underlying dynamic engine code but one small difference is that InfoSWMM and H2OMAP SWMM allows the user to select the node stop
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
InfoSewer and H20MAP Sewer Run Manager 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. Th
Global Dry Weather Flow Reduction in InfoSWMM and H2OMAP SWMM
Global Dry Weather Flow Reduction in InfoSWMM and H2OMAP SWMM
A cool tip to reduce the overall dry weather flow in InfoSWMM and H2OMAP SWMM without changing the mean dry weather flow is to do the following:
1. Make a Reduction or Increase
Various Images from Starts with a Bang re Math and the Environment
Various Images from Starts with a Bangre Math and the Environment
ght now, on Earth, the difference between high and low-tides affects the ocean height by a substantial amount. The Moon (and to a lesser, about 30% effect, the Sun) gravitationally pu
Read more…Siphon Modeling in InfoSewer and Arc Map
Here is at typical view of a siphon in InfoSewer, the rising links have a d/D of 1 and the dropping links typically have a d/D value less than 1. The q/Q for the rising links is based on the slope and the
Sensitivity Analysis in InfoSWMM and H2OMAP SWMM
It is easy to perform sensitivity analysis in InfoSWMM and H2oMAP SWMM using the Scenario Manager, Dataset manager, Block Edit in the Database Editor, Batch Simulation and the Report Manag
Read more…Example FM SWMM 5 model with and without Surcharge Depth
Subject: Example FM SWMM 5 model with and without Surcharge Depth
You need to use the surcharge depth for a Force Main in SWMM 5 to allow the engine to find the right point on the pump curve and pump up the rising main. If you do not use a surc
SWMM 5 Subcatchment Runoff and Depth Relationship
Note: The surface runoff is a non linear function of the independent depth in both the pervious and impervious areas of the subcatchments. No surface runoff occurs until the depth over either the impervious or pervious area is greater than the resp
InfoSewer Hydraulic and Hydrology Tips
Subject: How to use the Flow Splitter in InfoSewer for Dendritic Networks
InfoSewer, 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 downstre
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 can be entered as control
How to Easily Make a Smaller Model in InfoSWMM Using Trace Upstream and Downstream Network
Subject: How to Easily Make a Smaller Model in InfoSWMM Using Trace Upstream and Downstream 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 Downstre
Read more…Types of Stormwater Inlets from HEC-12 and HEC-22
Note: Types of Stormwater Inlets from HEC-12 and HEC-22
Stormwater Inlets consist of four main types (http://onlinemanuals.txdot.gov/txdotmanuals/hyd/storm_drain_inlets.htm) with most common shown in Figure 1.
1. Curb opening inlets either at a
FEMA, SWMM 5, 2D and LID in InfoSWMM
This circular time line graph shows there has been 11 versions of InfoSWMM with Low Impact Development (LID) modeling features and 2D mesh simulation added for InfoSWMM v10. The LID modeling features were added to EPA SWMM 5.0.019. EPA SWMM 5 has
Rainfall Articles from Scientific American
A few good copies of articles from Scientific American on Rainfall
From Bountiful to Barren: Rainfall Decrease Left the Sahara Out to Dry
How a once-wet landscape became one of the world's great deserts
By Adam Hadhazy