×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

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!

*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

HEC-HMS modeling Reservoir with both spillways and pumps

HEC-HMS modeling Reservoir with both spillways and pumps

HEC-HMS modeling Reservoir with both spillways and pumps

(OP)
I am looking to model a watershed with a reservoir. In addition to the direct precipitation runoff, the reservoir is also receiving pumped inflow from nearby wastewater facility.
The reservoir has an emergency spillway weir and also a pump discharging at a constant flow rate (apprx. 15cfs).
Anyway to include the pump discharge and the spillway weir at same time in the model?
I don't have any details on the pump other than its activated once the normal pool is exceeded by 1-ft and its constant cfs.
Can I add the constant discharge from the pump to the rating curve for the spillway weir?

RE: HEC-HMS modeling Reservoir with both spillways and pumps

Try setting up a outlet rating curve that combines the pumped outflow and the spillway flow.

RE: HEC-HMS modeling Reservoir with both spillways and pumps

(OP)
gbam, the only info i have on the pump is the pumping rate of 15 cfs and is activated once the water level in the reservoir starts rising ~1ft above normal water level. I have the rating curve for the spillway weir (stage-discharge table). My question is can I add the constant pumping rate of 15cfs to each stage of the spillway rating curve for a combined outflow rating?

RE: HEC-HMS modeling Reservoir with both spillways and pumps

You can use the pump information to establish a rating curve for the pump then you need a rating for the spillway and combine them into a single curve to enter into HMS. Should be fine.

Like this, example
WSE Pump Spill Comb
(ft) (cfs) (cfs) (cfs)
1000 0 0 0
1001 15 0 15
1002 15 0 15
1003 15 0 15
1004 15 20 35
1005 15 500 515
1006 15 1000 1015
1007 15 10000 10015

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

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

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