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
Applications
Publications
History and Credits

Using WEAP
Download
Licensing
User Guide
Tutorial
Videos
Resources

User Forum
Discussions
Members List
Edit Profile

Additional Support
Training
University Courses
Collaboration

About Us
SEI-US Water Resources Program
Please Contact Us


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

User Forum

All Topics | Topic "Irrigaiton Fraction"
Log in to post new messages or reply to existing messages.
 
Author Message
Pham Quoc

Subject: Irrigaiton Fraction   
Posted: 12/22/2015 Viewed: 4515 times
Hellow WEAP users
I cited from WEAP user guide
Runoff = Max (0, Precipitation available for ET – potential ET)
+ Precipitation*[effective precipitation]
+ Supply*[1- Irrigation Fraction]
This function for Rainfall Runoff Method.
In WEAP interface, where I can modify "irrigation fraction"?
And what is definition of HU - hydro unit in WEAP?
Thank you !
Stephanie Galaitsi

Subject: Re: Irrigaiton Fraction   
Posted: 12/28/2015 Viewed: 4445 times
Dear Pham,

Irrigation fraction is the percentage of the supplied water available for ET consumption (i.e., irrigation efficiency). When using the Rainfall Runoff (soil moisture model), you can select whether to have irrigated areas in your catchment by right-clicking on the catchment in the schematic, going to "General Info" and checking "includes irrigated areas". Once that button has been clicked, you will see an additional tab for data entry in your catchment element called "Irrigation". The first sub-category is % of irrigated area ("Irrigated Area).

Where do you see mention of HU?
Pham Quoc

Subject: Re: Irrigaiton Fraction   
Posted: 12/30/2015 Viewed: 4432 times
Thank you so much for your meticulous instruction.
It's very useful to me.
I see "HU" in the WEAP manual, in the Runoff Algorithm Calculation part.(Along with notation "LC"-land Cover)
Stephanie Galaitsi

Subject: Re: Irrigaiton Fraction   
Posted: 12/30/2015 Viewed: 4428 times
Looks like it is "hydro-unit" (HU can sometimes also mean the Heat Unit).
Quoc Pham

Subject: Re: Irrigaiton Fraction   
Posted: 12/31/2015 Viewed: 4420 times
Yes, but in this case, what does "hydro - unit" mean in WEAP?
Jack Sieber

Subject: Re: Irrigaiton Fraction   
Posted: 12/31/2015 Viewed: 4419 times
Hydro unit, an abbreviation of hydrological unit, is a catchment.
Quoc Pham

Subject: Re: Irrigaiton Fraction   
Posted: 12/31/2015 Viewed: 4415 times
Thank you Jack !
It's clear
Topic "Irrigaiton Fraction"