Welcome to WEAP's Website WEAP
WEAP is an initiative of the Stockholm Environment Institute.


About WEAP

Home
Why WEAP?
Features
What's New?
Sample Screens
Demonstration
Publications
History and Credits

Using WEAP
Download
Licensing
User Guide
Tutorial
Videos (YouTube)

User Forum
Discussions
Members List
Edit Profile

Additional Support
Training
University Courses
Collaboration

About Us
SEI-US Water Resources Program
Please Contact Us

LEAP
Interested in Energy?
Read about LEAP: SEI's software for energy planning.

Link WEAP and LEAP for combined Water-Energy planning.
Watch a video demo!
   

User Forum

All Topics | Topic "Accounting for attenuation in routed flow in WEAP at a weekly time step"
Log in to post new messages or reply to existing messages.
 
Author Message
Dr. Andrew Slaughter

Subject: Accounting for attenuation in routed flow in WEAP at a weekly time step   
Posted: 2/23/2018 Viewed: 8828 times
We are implementing WEAP for water resources management and planning in a relatively large catchment. The natural flow is being imported to WEAP from another hydrological model. Previous setups for the catchment in a separate water resources management model at a weekly time step have accounted for attenuation by implementing a time lag in flow. We think that we will need to implement something similar in WEAP if that is possible? I know that WEAP does not provide the functionality for this automatically, but is there a way to build it in, even if it is relatively simplistic?
Ms. Stephanie Galaitsi

Subject: Re: Accounting for attenuation in routed flow in WEAP at a weekly time step   
Posted: 4/16/2018 Viewed: 8813 times
Hi Andrew,

WEAP makes all the calculations based on the length of the timestep that you have selected. So a river flowing through two demand sites (for example) provides water to both of their demands in a month, and the resulting flow at the end of the river is the flow for that month in that reach.

Usually we deal with the timing of the water flow by adjusting the size of the model. Basically, a monthly-time step model should be large enough that water travels through the entirety on the modeled area in roughly 1 month. A weekly time step would be considerably smaller in terms of area, or rather distance that water must travel in the time step.


Topic "Accounting for attenuation in routed flow in WEAP at a weekly time step"