All Topics | Topic: “How to prevent WEAP from diverting more water than required?”
Author Message
Mr. Zhen Xiong Liu Lin
Subject: How to prevent WEAP from diverting more water than required?   
Posted: 10/24/2026 Viewed: 112 times

Hi everyone,

I'm modeling an irrigation district in WEAP–MABIA and noticed that WEAP sometimes diverts much more water than the demands actually require.

For example, the canal diverts 50 m³/s (its maximum capacity), but approximately 46 m³/s flows unused out of the end of the diversion (System-Wide).

My settings are:
- Maximum Diversion: 50 m³/s
- Diversion Fraction: 0%
- No minimum flow requirements

When I reduce the maximum diversion, the excess flow disappears.

What I need is for WEAP to divert only the water required to satisfy the demands, without unnecessarily reaching the canal's maximum capacity.

Is there a setting or allocation rule that can prevent these excessive diversions without imposing artificial flow limits?

Thanks!
Topic: “How to prevent WEAP from diverting more water than required?”