Does the 'area of each unit' when modelling rain barrels in SWMM represent the area of the impervious area contributing run-off into the rain barrel (for example the roof area) or the cross sectional area of the rain barrel itself? SWMM user manual a
I have 8 subcatchments in a watershed and all these 8 subcatchments have 8 different curve number values(infiltration model).I want to vary the curve number values and look at the change in the associated hydrograph. Can you kindly suggest me in whic
I want to vary the curve number values for my subcatchment for which I will write a code in matlab....I want the output hydrograph for all sets of Curve numbers...there will be around 100 such values....how can I link the the matlab code to SWMM....T
I am new to the site and hoping to get a few questions answered about the newest version of SWMM. I am currently a student working on a design project and we have choosen SWMM to model stormwater mangement in a cluster resdential development.
Hi, I am trying to model an infiltration pond in SWMM and get excessive (90%+) continuity errors for the pond node. The overall flow routing continuity error is zero for the site. The pond is set up to have a high flow bypass for a continuous model
Can anyone help me providing a sample SWMM model calibration tutorial set that uses PEST. I have a storm network model and I need to calibrate the model using PEST.
Any relevant suggestion, tutorial or reference is appreciated in advance.
I am new member to this forum as well new to EPA SWMM.
As per city of Calgary need to model storm detention in EPA SWMM 5.1 for the project area 3.3 ha and need to know how much volume of storage required, permissible release rate is 80 l/s/ha.
I am using Autodesk SSA version of SWMM. I am getting unreasonable results that are too high when the inlet is completely submerged by a flow that is say 5 times the inlet capacity. The program appears to calculate the flow in the upstream link bas
I am working on a SWMM 5 continuous model. I have a sanitary DWF that varies every three days due to an industrial discharge, so none of the pre-set flow variation patterns (hourly, daily, monthly) will vary the flow appropriately. Is there
Since yesterday my the "edit object" button won't open anymore. Also right click and chosing properties won't give information about the object. I have been working with SWMM for a few months now. I already tried to uninstall and install SWMM a few t
I am trying to set a constant outflow concentration as the result for a treatment-equation, i.e. BOD: C=50. Unfortunately, setting a constant value for the concentration does not work, the result of the effluent concentration would be just
I'm having issues with an attenuation feature. I've simulated the rainfall event (24 hours) and now I'm looking to see how long it will take to drain down using outlets with Head/flow relationships (simulated vortex controls e.g hydrobrake). Prob
For my job during the summer, I've been assigned to model a storm water pond using SWMM 5.1. My goal is to estimate the distribution of the ponds total storm water inflow at each of the pond's inlets (The
I am new to trying to model VFD Pumps. I have a single pump running on a single type 3 curve without controls besides on-off levels. Looking at the pump operation curve, the purple diamond indicates that the pump is operating on the curve most of the
i have been using SWMM 5.1 for stormwater catchment modelling. i am wondering whether f L/D should be inputted to include head loss in pipe length as a average head loss.where f is the friction factor depending on pipe relative roughness and Reynold