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An annual accounting system set up in Source follows these principles.
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Enabling annual accounting
Firstly, create an annual accounting system as follows:
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Figure 1. Annual Accounting, Configuration
The next section explains all the tabs available in the annual accounting dialog.
Configuration
This tab provides an overview of the annual accounting system. The parameters that need definition are explained in Table 1.
| Item | Description |
|---|---|
| Owner | This lists all the owners that have been configured using the Ownership Setup dialog (refer to Ownership in Source) |
| Debit Type | Determines how water is deducted from all accounts associated with this continuous accounting system; based on either order or extractions. |
| Start of Water Year | Day-month that the water year starts. |
| Usage to date | Represents how much of the water allocated has been ordered or used by water users in the water year to date. There are two options available - Usage From Function and Usage From Account Host. When losses need to be considered, an expression may be required to account for this. |
| Storages | Lists all the water storages in the project. Tick any storage you want to use. |
| Inflows | Lists all the inflow in the project. Just like the storages, tick any inflow you want to run in this project. The recession factor of each inflow can be changed using the corresponding Function Editor. |
| Other Resources | A list of resources that can affect the annual accounting system. Once you enter a name, you can enter a function for it. |
| Commitments | A list of commitments that can affect the annual accounting system. Once you enter a name, you can enter a function for it. |
Accounts
This tab provides a summary of all the accounts in the annual accounting system. As shown in Figure Figure 2, you can add or delete accounts using the corresponding buttons below the Accounts table.
Figure 2. Annual Accounting, Accounts tab
Off-Allocation System
To add an off-allocation system, right click Annual Accounting and choose Add Off-Allocation System. Refer to the Off Allocation node for more information.
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| Item | Description |
|---|---|
| Debit Type | Determines how water is deducted from all accounts associated with this continuous accounting system; based on either order or extractions. |
| Priority | A higher priority translates to resources being allocated quickerprior to a lower priority user. |
| Minimum Balance | If a minimum balance is defined, then order or extractions will not be allowed if it will cause the balance to drop below the minimum specified. If choosing Unrestricted, also specify the Minimum Volume. |
| Maximum Balance | Defines the maximum volume of water which can be held in an account. If an allocation results in this limit being exceeded, then the excess amount is redistributed to other accounts. |
| Allocation Calculation | The default is Available Resource Allocation Table, which opens the ARA table. The options available for this are shown in Table 2. Choose Function to determine an account type's allocation using this method. This function may reference a wide range of variables available in the model, including allocations to other account types and resource assessment system. The Allow Decrease checkbox controls whether or not an account’s allocation can go down within the water year. |
The Method to apply for this account type in ARA table drop-down menu has several options available (as shown in Figure 2), each with a different set of input parameters. These are explained in Table 2.
| Method | Input parameters |
|---|---|
| Function | Enter a function using the Function Editor |
| Monthly varying | Choose the appropriate Calculation Method - either Interpolate or Threshold |
| Percent (with function) | |
| Percent (with linked volume) - default | Accounced Increment checkbox and corresponding field Maximum Announced Percent checkbox and corresponding field Use Shares checkbox Shares - Corresponds to the |
| Volumetric | Set the volume of the |
Once an account type has been created, right click to reveal the following items in the contextual menu.
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