Notices
Results 1 to 4 of 4

Thread: Rainfall Modeling Software Question

  1. #1 Rainfall Modeling Software Question 
    Forum Freshman
    Join Date
    Oct 2009
    Posts
    9
    Hello,

    I am looking for some freeware that would allow me to take a scanned topography map and run a hydrology analysis. I would like to simulate a rainfall to see where the runoff accumulates. I have no budget for this which is why I am asking for freeware advice. I know the answer might be a complicated process involving several small programs. Any help would be appreciated.

    Thank you


    Reply With Quote  
     

  2.  
     

  3. #2  
    Forum Freshman Samuel P's Avatar
    Join Date
    Oct 2008
    Location
    England
    Posts
    78
    I'm really not aware of any free programs that can help you out.
    You should really search around Google to find what you want, I'm sure if there is one you'll be able to find it!


    Reply With Quote  
     

  4. #3  
    Moderator Moderator
    Join Date
    Apr 2007
    Location
    Washington State
    Posts
    8,416
    You might want to root through here. http://www.spatialhydrology.com/software_hydrostat.html

    Hydrology models are pretty complex and involve rain fall distributions, which are effected by the topology (e.g. ridges get more rain), soil types, amount of vegitation etc.

    On other other hand if you're just looking for crued approximations you might do it the old fashion way with a Planimeter (yes I'm old) to get the watershed area, assume steady state and figure the volume passing through well defined outflow areas (e.g. rivers).
    Reply With Quote  
     

  5. #4 Re: Rainfall Modeling Software Question 
    Suspended
    Join Date
    Sep 2009
    Location
    New Orleans
    Posts
    1,191
    Quote Originally Posted by engineerjoe
    Hello,

    I am looking for some freeware that would allow me to take a scanned topography map and run a hydrology analysis. I would like to simulate a rainfall to see where the runoff accumulates. I have no budget for this which is why I am asking for freeware advice. I know the answer might be a complicated process involving several small programs. Any help would be appreciated.

    Thank you
    There are a number of free programs for this. Nearly all of the complex hydrology models were federally funded and therefore available free. They have not been updated in some time so they don't run well on current versions of popular OS's. Several civil engineering software providers have taken the core code and packaged it in a better interface. One or two of them offer free (limited) versions to students and also low function demo copies. It has been about 5 years since I have used these but one was particularly good even the demo version, I was able to do nearly everything I needed to evaluate medium sized drainage areas. If you reply back I will go look for this software, I can't remember the name. The full version is about $7,000 so you will need to think about that.
    Reply With Quote  
     

Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •