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 All Topics | Topic "Irrigaiton Fraction"

Author Message
 Mr. Pham Quoc Subject: Irrigaiton Fraction   Posted: 12/22/2015 Viewed: 14323 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 !
 Ms. Stephanie Galaitsi Subject: Re: Irrigaiton Fraction   Posted: 12/28/2015 Viewed: 14248 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?
 Mr. Pham Quoc Subject: Re: Irrigaiton Fraction   Posted: 12/30/2015 Viewed: 14230 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)
 Ms. Stephanie Galaitsi Subject: Re: Irrigaiton Fraction   Posted: 12/30/2015 Viewed: 14218 times Looks like it is "hydro-unit" (HU can sometimes also mean the Heat Unit).
 Mr. Quoc Pham Subject: Re: Irrigaiton Fraction   Posted: 12/31/2015 Viewed: 14207 times Yes, but in this case, what does "hydro - unit" mean in WEAP?
 Mr. Jack Sieber Subject: Re: Irrigaiton Fraction   Posted: 12/31/2015 Viewed: 14202 times Hydro unit, an abbreviation of hydrological unit, is a catchment.
Mr. Quoc Pham

Subject: Re: Irrigaiton Fraction
Posted: 12/31/2015 Viewed: 14197 times
Thank you Jack !
It's clear
 Topic "Irrigaiton Fraction"