Subject: Deffinition of Reliability Posted: 8/1/2005 Viewed: 39995 times
Deffinition of Reliability Mehdi Mirzaee MMirzaee <a href="mailto:M.Mirzaee@wri.ac.ir">M.Mirzaee@wri.ac.ir</a>I run a complex model for water consumption and uses for different sectors as a part of an IWRM project. As you know in IWRM reliability of water allocation is different. e.g. for potable water I want to get 96% reliability and for irrigation purpose I want to get 85%. How could I define them for WEAP? I could not get any place for this data....
Thank you for your help in advanced...
Mr. Jack Sieber
Subject: Deffinition of Reliability Posted: 8/2/2005 Viewed: 39991 times
Deffinition of Reliability Jack Sieber jsieber <a href="mailto:jsieber@tellus.org">jsieber@tellus.org</a>Reliability is not an input to WEAP, but it IS an output. WEAP tries to achieve 100% reliability for all demand sites. If there is a shortage of water, then the demand sites with the highest priorities get their demand satisfied first. In your example, you would give priority 1 for potable water demand, and priority 2 for irrigation.
To see the reliability, go to the Results View, choose Demand Coverage for the graph, then check "Percent of Time Exceeded" at the bottom. The point at which the lines go below 100% is the reliability, or the percent of time that all a demand site's demand is met. In the attached example (from Weaping River Basin), Industry East's reliability is 87%, while South City has 95% reliability.
Jack
Mr. SIMBARASHE DZIREKWA
Subject: Re: Deffinition of Reliability Posted: 8/1/2019 Viewed: 11478 times
So Jack does it mean that you get reliability, not for a particular catchment but instead for a demand site only.
Mr. Jack Sieber
Subject: Re: Deffinition of Reliability Posted: 8/1/2019 Viewed: 11476 times
The Demand Coverage result includes Demand Sites and Catchments. There is now also a separate result for Reliability.
