×
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

Detention Ponds and Time of Concentration Calculations

thread162-445430

Detention Ponds and Time of Concentration Calculations

Detention Ponds and Time of Concentration Calculations

(OP)
How are detention ponds treated in calculating a "proposed" drainage area's time of concentration? Does the calculation include the length of flow in a pond or are ponds ignored and the calculation ends at the upstream end of a pond?

RE: Detention Ponds and Time of Concentration Calculations

Normally the effects of the pond are assessed by a hydrograph routing calculation, rather than including the pond in the Tc, which cannot accurately simulate the behavior of most ponds.

This means that the Tc calculation will normally end at the inflow to the pond, and the pond routing calculation will take over at that point.

Peter Smart
HydroCAD Software
www.hydrocad.net

RE: Detention Ponds and Time of Concentration Calculations

agreed

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! Already a Member? Login

Resources
Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close