"At the Summit of Olympus Mons
Credit: G. Neukum (FU Berlin) et al., DLR, ESA
From martian orbit, the Mars Express cameras looked down on the largest volcano in the solar system. The result was this stunningly detailed overhead view of the…"
SWMM5 - Stormwater Management Model
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Robert Dickinson replied to Robert Dickinson's discussion How is the St Venant Equation Solved for in the Dynamic Wave Solution of SWMM 5?"Subject: Link Iterations in the SWMM 5 Dynamic Wave Solution
Each of the links in the SWMM 5 network can use up to 8 iterations to reach convergence during a time step in the dynamic wave solution of SWMM 5. The rules…"
Robert Dickinson left a comment for wu ze jian"Hi, I added this discussion http://swmm2000.com/forum/topics/how-is-the-st-venant-equation-solved-for-in-the-dynamic-wave-solu"
Robert Dickinson posted a discussionHow is the St Venant Equation Solved for in the Dynamic Wave Solution of SWMM 5?
Subject: How is the St Venant Equation Solved for in the Dynamic Wave Solution of SWMM 5? An explanation of the four St. Venant Terms in SWMM 5 and how they change for Gravity Mains and Force Mains. The HGL is the water surface elevation in the upstream and downstream nodes of the link. The HGL for a full link goes from the pipe crown elevation up to the rim elevation of the node + the surcharge depth of the node. The four terms are: dq2 = Time Step * Awtd * (Head Downstream – Head Upstream)…See More
Robert Dickinson added a page to the group Hydraulics
Force Main Friction Loss in InfoSWMM and the Transition from Partial to Full Flow
Subject: Force Main Friction Loss in InfoSWMM and the Transition from Partial to Full Flow
You can model Force Main friction loss in InfoSWMM using either Darcy Weisbach or Hazen Williams as the full pipe friction loss method (see Figure 1 for the…
Robert Dickinson's blog post was featuredSWMM 5 Precipitation Options
Subject: SWMM 5 Precipitation Options You can have design storms, monitored storms of any length of the time from minutes to centuries, use intensity, volume or cumulative precipitation, use both rainfall and snowfall in the same rain gage depending on temperature, use both time series or external files for the rain gage and have unlimited rain gages with the limitation of one rain gage per subcatchment. …See More
Robert Dickinson posted a blog postSWMM 5 Precipitation Options
Subject: SWMM 5 Precipitation Options You can have design storms, monitored storms of any length of the time from minutes to centuries, use intensity, volume or cumulative precipitation, use both rainfall and snowfall in the same rain gage depending on temperature, use both time series or external files for the rain gage and have unlimited rain gages with the limitation of one rain gage per subcatchment. …See More
Robert Dickinson commented on Robert Dickinson's group Stream of Information"Pacheena Indian Reserve, British Columbia, Canada
May. 25, 2012
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Robert Dickinson commented on Robert Dickinson's group Stream of Information"All the Water on Europa Illustration Credit & Copyright: Kevin Hand (JPL/Caltech), Jack Cook (Woods Hole Oceanographic Institution), Howard Perlman (USGS)
Explanation: How much of Jupiter's moon…"
Robert Dickinson commented on Robert Dickinson's group Water Quality"URBAN STORMWATER QUANTITY/QUALITY MODELING USING THE SCS METHOD AND EMPIRICAL EQUATIONS†
http://onlinelibrary.wiley.com/doi/10.1111/j.1752-1688.1997.tb04093.x/abstract
May 24, 2012
Wiley Online Library will be disrupted on 26 May from…"
Robert Dickinson commented on Robert Dickinson's group Water Quality"Hi MeHa, Here is one good source of data, I also have the SWMM 5 models for the USGS areas.
http://www.1000friendsofflorida.org/pubs/stmarksgreen/apend4.asp
http://sofia.usgs.gov/publications/ofr/78-324/ofr-78-324.pdf
"
MeHa commented on Robert Dickinson's group Water Quality"I want to model WQ of sewers. Can any body provide me a network with real measured calibration files? "
MeHa posted a status"Hello, When designing a sewer system, we consider the Node Flooding and Conduit surcharge in the status report. Is there any guideline which"
Quah Soon Tong left a comment for Esther Bergareche Auricenea"Hi Esther, I am not sure you are the same Esther that was at the United World College in South Wales with me. I am Quah Soon Tong from Singapore. I noticed you are also an engineer. I did Civil Engineering at Cambridge University, but practised as…"
Robert Dickinson commented on Robert Dickinson's group Stream of Information"River Canyon
May. 23, 2012
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Robert Dickinson commented on Robert Dickinson's group Stream of Information"Litla Dimun, Faroe Islands
May. 23, 2012
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10,000+ subcatchments to be assigned with outlets
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Hi experts,
I am to assign outlet to some 10,000 sub catchments, manually doing it doesn't seem professional.
Luckily, name of subcatchment is same name of junction (outlet)
i.e.
Subcatcment Junction
177119 177119
177123 177123
177126 177126
263803 263803
263806 263806
These are not in particular sequence but name of subcatchment is always same as of junction.
Any clue
Thanks in advance
Tags: large, nodes, number, outlet, subcatchment
Replies to This Discussion
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Permalink Reply by Robert Dickinson on -
You can save the SWMM 5 input file to Excel using this tool and then use Excel to populate the OUTLET column
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Permalink Reply by Rui Daniel Pina on -
Please try inp.PINS and select inpTools --> Subcatchments connection
(https://sites.google.com/site/inppins/)
You can also edit inp text file, or even use GIS functions.
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Permalink Reply by Kashif Ali on -
Thanks Robert,
It really what I needed - without reading the manual, I was trying each option in the swmm to see if there is way to export the data in excel format.
However, data being too large, excel simply says sorry with this message (This message can appear if:
You are trying to open a file that contains more than 65,536 rows or 256 columns. To fix this problem, open the source file in a text editor such as Microsoft Word. Save the source file as several smaller files that conform to this row and column limit, and then open the smaller files in Excel. If the source data cannot be opened in a text editor, try importing the data into Microsoft Access, and then exporting subsets of the data from Access to Excel.
You are trying to paste tab-delimited data into an area that is too small. To fix this problem, select an area in the worksheet large enough to accommodate every delimited item.
Notes
You can not configure Excel to exceed the limit of 65,536 rows and 256 columns.
By default, Excel places three worksheets in a workbook file. Each worksheet can contain 65,536 rows and 256 columns of data, and workbooks can contain more than three worksheets if your computer has enough memory to support the additional data.)I tried one more add-on by replacing excel with access. But it says unrecognized data format. phewww
Entering the data in SWMM is made pretty easy with Dr. Rui's inp.PINS (straight from ArcGIS), but adjusting missing data would be simpler in MS Excel directly from SWMM environment.
Thanks again, and look forward if you have got idea about editing large data
Can send you the .INP file which is now 10MB.
Robert Dickinson said:You can save the SWMM 5 input file to Excel using this tool and then use Excel to populate the OUTLET column
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Permalink Reply by Kashif Ali on
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Thanks Rui for your time and efforts to go through this project,
By using GIS functions and adding fields in attribute files, the sub catchments are now linked with their appropriate outlets.
Also, rather than, loading all hydrologic and hydraulic parameters (from shp files), I tried one by one and kept running Make.inp and overwriting the same .inp file - it did the job.
Now, fixing the missing data is becoming difficult - as discussed above.
And, exploring GIS to fix the missing data (upstream/downstream elevation of pipes) by interpolation as you advised.
I would discuss in the next meeting if this project could be completed with your collaboration and by taking advantage of your research and accomplishments.
here is the file created
http://www.mediafire.com/?a5u64plrksd3tec
regards,
Rui Daniel Pina said:Please try inp.PINS and select inpTools --> Subcatchments connection
(https://sites.google.com/site/inppins/)
You can also edit inp text file, or even use GIS functions.
-
Permalink Reply by Kashif Ali on
-
Robert Dickinson said:You can save the SWMM 5 input file to Excel using this tool and then use Excel to populate the OUTLET column
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Permalink Reply by Kashif Ali on
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Hello Robert,
Here is the .inp file for your review, if you can see how large data can be handled by excel add-on
http://www.mediafire.com/?a5u64plrksd3tec
Robert Dickinson said:You can save the SWMM 5 input file to Excel using this tool and then use Excel to populate the OUTLET column
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Permalink Reply by Robert Dickinson on
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You also use a text editor - strip out the Subcatchment Section and then use use Excel just on the Subcatchment Section - of course you will then have to use a text editor to paste the altered Subcatchment section back into you SWMM 5 input file.
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Permalink Reply by Kashif Ali on
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Thanks Robert it works,
A bit time consuming but still ok
regards
Robert Dickinson said:You also use a text editor - strip out the Subcatchment Section and then use use Excel just on the Subcatchment Section - of course you will then have to use a text editor to paste the altered Subcatchment section back into you SWMM 5 input file.
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