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Posts posted by aghamiri

  1. How can we verify the wms models? We couldn't model the parking lot and open book experimental model with WMS  for its verification.

    1)Anybody can help us to model these Geometries as watershed?

    2)How can we verify the software? Have you any idea about this?


  2. SWMM  manual say's that: An idealized sub catchment is conceptualized as a rectangular surface that has a uniform slope and a width W that drains to a single outlet channel.Each sub catchment can be further divided into three sub areas: an impervious area with depression (detention) storage, an impervious area without depression storage and a pervious area with depression storage. Only the latter area allows for rainfall losses due to infiltration into the soil.

    SWMM claims that visualize the sub-basin as v-shape basin but can't model an idealized sub-basin simply.

    I am searching a method to define an idealized sub-basin. I will find it ... I know.



  3. I should be using a lateral inflow in a channel routing in HEC-HMS. I applied two planes as my sub-basins and defined a sub-collector.The outflow from the planes is applied to the sub-collector as lateral inflow. 

    until now everything is ok .but  HEC-HMS has no routing method parameter for sub-collector.  manual says that the surface runoff on the two planes is ALWAYS routed using the kinematic wave method.however, we have the choice of using another method.still, I have no problem.my problem is beginning from this point that I have to fill the information about collector and channel. my model has not any channel or collector.


    Best Regards,

  4. we should add an option to adding and Editing the fields in coverages .until now we were very dependent to Arc GIS to create shape files and define any field to coverage.


    we should remove 'Add shape files' from WMS modeling processes. this is an unnecessary step in modeling.

    Any type of coverage has a specific field related to it .we should add fields related to coverage when a coverage has created.

  5. By Rational Method we can build hydrologic Basin and compute subbasin flow as well  SWMM  can run the flow through the Storm Drain and watch the routing in channels .

    1) can we route channel inside a Basin?


    2) can we use Rational Method without define outlet point(point)  ? can we identify the channel ( Arc ) as output of basin ?

  6. I looked on tutorials and have created my simple Experimental  Watershed as well as demonstrated in Attach file  moreover  I defined a TIN with XYZ survey point and triangulate it.

    But the message in the result shows that I need a DEM to generate max flow.


    Is this message a default Error ?Can I ignore this message and go on?


  7. Thanks Chris ,


    your answers was helpful

    In the"  WMS Tutorial> Storm Drain Modeling-SWMM modeling " assumed that  the TC values have already been  calculated  for this exercise  . Do you know TC calculated with which formula ? Kerpich or Kerby or any other formula !

    what TC computation formula is appropriate for Rational method ?

    Best Regards ,

  8. How Can we Install a Model Of Exprimental Watershed system in WMS  generally? 


    in Tutorials we must import a TIN Map in the  beginning . Can  I simulate without TIN MAP and import elevation manually?


    How can we Repeat  continuous The Run of Model and export the Results neat ?


    Can We Programming in WMS  enviroment  with C# and circulate model in a loop ?





  9. Hello everybody,

    I am a newcomer to the WMS family. These are my first questions:

     1) Why  HEC -1 & GSSHA  have weighting gauge rainfall, but other hydrological models do not have such an option

    2) when we add precipitation gauges to our model in order to create Thiessen polygons, we can only enter a single storm depth while we can have more than one gauge in our model with different storm depths. How can we add each relative storm depth for its gauge?

    Best Regards,

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