×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Multiple frequency storm meteorological models.

Multiple frequency storm meteorological models.

Multiple frequency storm meteorological models.

(OP)
Hello from Greece!
I am a first time user of HEC-HMS 5.3 and I have a basin model with several subbasins. Every subbasin has its own IDF curve and different precipitation measures. I would like to use the "frequency storm method" into the meteorological model. Apparently I need to have different meteorological frequency storm parameters for every subbasin.
Is there a way to use the frequency storm method and have different frequency storm parameters for every subbasin of the same basin model?
If I create different meteorological model for every subbasin, where in the program I set which model corresponds to which subbasin?
Thank you in advance for your time!
Best regards,
Jenny

RE: Multiple frequency storm meteorological models.

Just curious - how big are these basins to have their own IDF curves?

Hydrology, Drainage Analysis, Flood Studies, and Complex Stormwater Litigation for Atlanta and the South East - http://www.campbellcivil.com

RE: Multiple frequency storm meteorological models.

(OP)
Every basin extends for approximately 100 km2.

RE: Multiple frequency storm meteorological models.

And do you actually have accurate IDF data for each of these areas? It's rare for the IDF data to vary significantly on that scale. That's why beej67 was asking about the size.

Peter Smart
HydroCAD Software
www.hydrocad.net

RE: Multiple frequency storm meteorological models.

^this.

I would take a hard look at your IDF info and see if it truly varies that much between them. If it does, I'd ask myself why, and whether perhaps it was synthesized properly. Then I'd think about combining the data in some way to form one IDF relationship for your study area, that could be applied to both basins. Then your issue goes away.

Hydrology, Drainage Analysis, Flood Studies, and Complex Stormwater Litigation for Atlanta and the South East - http://www.campbellcivil.com

RE: Multiple frequency storm meteorological models.

(OP)
I asked Hec-Hms team and responded that I can not use more than one IDF curve with "frequency storm method". They are working on it on the new version of Hec-Hms. Instead I used Precipitation gages and gage weights for each basin. Each gage had its own IDF Curve. I calculated precipitation from my IDF Curves for every gage and for different return periods. Then I run simulations for every Return Period. By the way precipitation calculations were not so different but I was obligated by the project to use all of them. Thank you for your help and support!

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources