Water is diverted directly out of the river to meet demands. This operation does not require additional rules but does require additional model setup.

A reach object must be added for each demand point. The reach will be set up to have a diversion and will have a Min Diversion Bypass method selected. The minimum base flow requirement will be input on the Minimum Diversion Bypass slot. The reach will be linked to a water user with the appropriate methods selected. The water user object will always divert the computed Diversion Request as long as there is sufficient water available. If not, it will take the available water. The available water is computed as the total flow in the reach (Inflow) minus the Minimum Diversion Bypass.

Make sure to also add these reach objects to the subbasins created for other operations.

On the diversion reach, select the methods summarized in Table 3.4.

Either a water user or a diversion object can be used, but typically a water user is recommended. On the water user, the method selections summarized in Table 3.5 are recommended.