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


Please help with this Pond Elevation Control Structure

Please help with this Pond Elevation Control Structure

Please help with this Pond Elevation Control Structure

Trying to design a control structure for the elevation of a pond.
Essentially, putting a box culvert at the bottom of the pond running inverted pipe 1,200 ft to the outfall structure. This design is simply to maintain a specific elevation of the water surface (4'). The tricky part is that the required surface elevation is the same as the natural ground elevation at the outfall structure that is 1,200 feet away. So we're not using gravity for flow or anything. Simply just to control surface elevation.

My concerns are, will this work?
Just because our outfall elevation is the same as the required water surface elevation of our pond, does that mean it will hold as a rain comes through?
Does pressure head not play a part in all of this? Is it as simple as saying that whatever elevation the water surface is in the pond, it will also be that same elevation in the culvert??
Also, How would you go about properly sizing a culvert in this application. Right now I'm just assuming 12" CPP. All of my experience is with gravity flow, so this is throwing me off a tad bit.

Has anyone designed a system like this? Thanks for the help!

RE: Please help with this Pond Elevation Control Structure

Yes, your design will maintain the desired 4' WSE in the pond, although you are going to get a bump in the pond every time it rains, with the recovery time largely dependent on the pipe size.

However, I would be concerned about sediment accumulation and blockage (unless you have periodic high flows sufficient to flush the system). Why not run the outlet pipe along your 4' elevation, preferably at a slight pitch?

Peter Smart
HydroCAD Software

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!


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