"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
SWMM 5, InfoSWMM, H20MAP SWMM, InfoSewer for Water Quality,Hydrology, Hydraulics
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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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Bo Hansson's Discussions
Elevation info into subcatchments from backdrop file
Started this discussion. Last reply by Bo Hansson Dec 20, 2011. 2 Replies 0 Likes
Hi i have read the SMWW apps…Continue
Metafile from autocad use in SWMM, 2 important questions plz answer
Started this discussion. Last reply by Robert Dickinson Dec 19, 2011. 3 Replies 0 Likes
Hi I have made a 3D map in autocad civil 3D. I saved it as a metafile so SWMM can read it. In SWMM i want to simulate rain and calculate the stormwater flow.My question is when i open the metafile in…Continue
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Bo Hansson replied to Bo Hansson's discussion Elevation info into subcatchments from backdrop file
"Ok thank you, So the only way if i understand this now is that I get the avarage slope variabel for a certain area ( I know how to get it in cad so thats no problem). When I know the slope variabel I then put…"
Robert Dickinson replied to Bo Hansson's discussion Elevation info into subcatchments from backdrop file
"Hi Bo,
The Graphical User interface of SWMM 5 is written in Delphi and does not have a GIS, CAD or DEM, TIN or DTM component. It can only calculate the area of a subcatchment or the length of a link and NOT extract an elevation from a…"
Bo Hansson posted a discussion
Elevation info into subcatchments from backdrop file
Hi i have read the SMWW apps manual. This is a picture from that. Im using a map from autocad as a backdrop image. I have drawn my subcatchments on the area and everything looks fine except that I want the elevation info from the area like the picture above. My backdrop image is a elevationcurve map, can i get the elevation info…See More
Robert Dickinson replied to Bo Hansson's discussion Metafile from autocad use in SWMM, 2 important questions plz answer
Bo Hansson replied to Bo Hansson's discussion Metafile from autocad use in SWMM, 2 important questions plz answer
"Im not really sure what u meant with that. Exporting SWMM data from civil 3D. Do you mean that i should have my map from civil 3D and use it as a backdrop and draw a new map on top of it. Whats the point with taking your map from autocad then,…"
Robert Dickinson replied to Bo Hansson's discussion Metafile from autocad use in SWMM, 2 important questions plz answer
"Hi, You can only use the drawing as a backdrop. I would suggest that should export the actual SWMM 5 data from Civil 3D so you can use in the SWMM 5 Graphical Users Interface."
Bo Hansson posted a discussion
Metafile from autocad use in SWMM, 2 important questions plz answer
Hi I have made a 3D map in autocad civil 3D. I saved it as a metafile so SWMM can read it. In SWMM i want to simulate rain and calculate the stormwater flow.My question is when i open the metafile in SWMM i cant see if its still 3D or just 2D. does the program have the information about the map in X, Y, Z direction or can it just read 2D. If its not 3D i cant see how the program can calculate stormwater runoff. Another question, my map i have done in autocad have all the information about…See More
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