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Ordering priorities allow users in Source to specify how shortfalls are prioritised between different demands in Source. Without a priority system enabled, Source will shortfall all demands proportionally within the model. The priority ordering system addresses situations encountered in water resource models such as the following:

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Table 1 Supply Point configuration

Scenario

Allow Order

Extract Water

Result

1

True

True

Standard case

2

True

False

Priorities have no effect on the flow phase.

3

False

True

Water will be extracted independently of the priorities

4

False

False

No effect

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  1. Maintain downstream ratio
  2. Override ratios and assign to one priority level (re-prioritise orders - see user guide).


Note: Priority ordering will override ownership if they both turned on in a system. When there is not enough water in the system, borrow and payback will work to make sure higher priority demand get water prior to lower priority demand.  


Storage


Three options at a storage node that have an impact on the prioritisation of orders

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