Hi all!
I am using SWMM 5.0 in order to simulate TSS in stormwater.
I know that water quality routing within conduit assumes that the conduit behaves as a continuously stirred tank reactor (CSTR).
In reference to the substance involved in the reaction,
Read more…Hi all!
Is there the possibility to modify easily the default washoff formulations in SWMM?
I look forward to hearing from you soon.
Thank you,
Angela
Read more…This is a complete working example
[TITLE]
;;Project Title/Notes
BOD5 linked to Temperature
[OPTIONS]
;;Option Value
FLOW_UNITS CMS
INFILTRATION CURVE_NUMBER
FLOW_ROUTING DYNWAVE
LINK_OFFSETS DEPTH
MIN_SLOPE 0
ALLOW_PONDING YES
SKIP_STEADY_STATE NO
Hi evrybody,
Is it possible to introduce in SWMM a new was-off equation or I can only choose from the equation that there are inside?
Imagine any type of equation. Polynomial, or logarithmic, anything. Does SWMM allow the user to include any equation?
Read more…Is it possible to create a plot or a result table containing the current load of pollutants on the catchment for long series simulation?
Read more…Hi evrybody,
I'm working on Pyrethroids in Urban Stream Sediments and I'm using SWMM.
I would like to know if there are equations in SWMM to simulate Photodegradation and hydrolisis processes.
Thank you in advance.
Angela
Read more…Hi users!
Could you tell me what is the problem of this rainfall file?
When I try to run, the report shows me ERROR 318.
Below, there is an example of a rainfll file:
1 2004 01 01 00 00 0.000
1 2004 01 01 00 15 0.000
1
Read more…Hi, i hope someone can help me about this misunderstanding: considering a single precipitation event, i can not undestrand if i have to insert, as imput, the "initial build up" or the "antecedent dry days", or both of them. I guess i have to set onl
Read more…Hi! I would to run a continuous simulation. Could the time series have any lenght, or is there a maximum length that can not be go over?
I thank you in advance.
Read more…Hi! I got the hourly runoff results from model and the unit is CMS. Now I want to calculate the pollutant load in the runoff. Normally the unit of the load is kg/ha/yr, but I only have hourly runoff data and unit is cubic meters per second. I don't k
Read more…Hi! I used statistics tool in SWMM5 and got the results as following, but I'm not clear what "exceedance frequency" means here? In addition, why is start data not in order? I mean 211, 2012 and 2013. It appears randomly.
Hi! I have a question about runoff. Since this model can't model pollutant reduction benefits from LID, I want to calculate it using EMC by myself. I'll use equation L=EMC*Q, where EMC is mg/m3, Q is m3/day. But the runoff modeled from SWMM is m3/s a
Read more…SWMM 5 Water Quality Example Files
| File Name | Description |
|---|---|
| RUNOFF3_SW5.INP | STEVEN''S AVENUE DRAINAGE DISTRICT LANCASTER PA |
| RUNOFF20_SW5.INP | Runoff Example # 20 - PCSWMM 3.2 EXERCISE 5 |
| RUNOFF21_SW5.INP | SUSPENDED SOLIDS AND BOD POLLUTOGRAPH SIMU |
Objects Found In Google Satellite View Become Stunning Mosaics
Jenny Odell captures a truly unique bird's eye view by stitching together images of airplanes, pools and even nuclear cooling towers from Google Satellite View. The effect is both bizarr
Here are a few example files for SWMM 5 along with associated blogs:
USGS Report
Dual Drainage file link
https://app.box.com/s/jq8i1gzsinibc3cad8zu0b7vdltxk40r
Read more…
Hi,
I wondering to understand the equation of "Exponential Washoff".
W=C1*q^C2*B
where C 1 = washoff coefficient, C 2 = washoff exponent, q = runoff rate per unit area ( mm/hour), and B = pollutant buildup in mass units (User's Manual Version 5.0)
The
Read more…I am trying to set a baseline level of a pollutant. This only appears to work when the inflow type "MASS" is selected. Inputting a value when inflow type "CONCEN" is selected, nothing registers on the resulting time series plot, as shown in the ex
Read more…Hi!
I want to clarify something. I am running a long term simulation to know the charge of fecal coliform in the summer.
This is the report:
************************** CF
Runoff Quality Continuity LogN
**************************
Hi:
I am wodering how the HRT is being calculated in the treatment expression (e.g. C= NH4*exp(-0.004*HRT).
Thanks!
Read more…Lid Controls in SWMM 5.0.022
The ability to model Low Impact Development (LID) is a new feature created by the EPA in SWMM 5.0.022. This discussion will list various features in LID modeling.
Read more…
