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Borrow and Payback has been modelled in predecessors to Source, such as IQQM and MSM, for many years. The concepts in these models have been updated and enhanced to suit the needs of Source.
Version
Source version number 2number 4.191.1.
Dependencies
The model configuration in Source must include at least one Ownership System with at least two Owners for borrow and payback to be modelled.
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- Inflow and confluence nodes
- Wetland hydraulic connectors
- Loss nodes
- Supply point nodes
- Controlled splitter nodes
- Storage nodes (Weir upstream reach not included)
- Links
Borrow and Payback accounting occurs mainly during the flow distribution phase, although some aspects of Borrow and Payback are also considered in the order phase. For a weir node, Borrow and Payback only occurs in the weir storage component and not the upstream reach.
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For more details on payback at a storage see Ownership in Storages - SRGOwner Capacity Share Proportion Method.
Time step: Resource Assessment – Water Accounting Phase
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