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| 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 annual accounting system; based on either order or extractions. |
| Start of Water Year | Day-month that the water year starts. |
| Usage to date | Determines 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 upstream of the water user need to be considered, a function may be required to account for this. |
| Storages | Lists all the water storages in the project. Tick any storage you want to usewhose resources are used for the annual accounting system. |
| Inflows | Lists all the inflow in the project. Select any inflow whose resources are used for the annual accounting system. The recession factor of each inflow can be changed set using the corresponding Function Editor. The recession factor It provides the total volume of recession between the curretn current time-step and end of the current water year. |
| Other Resources | Represents other resources such as inter-valley transfers. |
| Commitments | These are used to represent other commitments such as special reserves or provision for minimum flows. |
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| Item | Description |
|---|---|
| Name | Name of the account. |
| Account host | Node that the account is associated with (Water User, Bulk Licensing or Environmental Demand). |
| Account type | Type of account (named by you). This is configured under the hierarchical item Account Type. |
| Unit shares | Number of unit shares assigned to the account. For convenience, this should be the volume (in ML) in an annual accounting system. |
| Initial balance | The initial account balance. If you are going to use the initial account function, you need to ensure that there is sufficient water in storages to cover the total initial balances as well as the required reserves. If the initial balances are set too high a warning message will be generated and the results may not follow the required logic. |
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| Menu option in ARA table | Resulting variation in Allocation tab (Annual Accounting) | |||||
|---|---|---|---|---|---|---|
| Percent (with linked volume) | The Account Type column can be edited directly on the table. The Resource column is calculated automatically based on the percentage allocation of the Account Type share volume. | |||||
| Function | The Resource column is calculated based on the function specified for the Account Type.
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| Monthly-varying | In the Account Type column, click the hyperlink to open the table showing the allocations for each month in the water year (shown in Figure 5). Depending on which option in chosen Values in the ARA table (Interpolate or Threshold) under Account Type, the value in the Resource column gets populated automatically.You can set the resource of each monthly manually or by import or export data using the corresponding buttonstable will be calculated depending on the option chosen for the calculation method in the Account type tab. If interpolate is chosen for the calculation method, the Resource of the first column is calculated based on the current and next month values. If Threshold is chosen, the value in the Resource column corresponds to the value in the current month. You can set the resource for each monthly manually or by importing it. This data can also be exported. | |||||
| Percent (with function) | In the Account Type column, click Function... to specify what proportion of Shares (in the Account Type) will be assigned to the Resource column. For example, consider Shares = 50000ML, and the function specifies 10% in the Account Type column, the value in the Resource column will be 5000 (10%*50000) ML. | |||||
| Volumetric | The value is directly editable in the table. The Resource column is then based on the value in the Account Type column. |
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An annual accounting system may contain several account types (as defined by you). Each account type can also include many accounts. To add an account type, as shown in Figure 1, right click on the annual accounting system and choose Add Account Type.
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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 prior to a lower priority userNot used. |
| 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. |
| 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 available to other account types. Choose Per Unit Share to define the maximum balance as a volume per share. |
| Allocation Calculation | The default is Available Resource Allocation Table, which opens the Available Resource Allocation (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 reduce within the water year. |
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To add an account to an account type, you must configure Number of Shares, the Initial Account Balance and Previous Usage parameters (as shown on the left side of Figure 7). To link the account to a host, choose the water user, Bulk licensing or Environmental demand node under Associated Account Host. The associated account host column lists all the available nodes in the project. Once these have been configured, you will notice that the value configured for the Number of Shares relates to the Demand distribution item of the water user node (shown on the right side of Figure 7). Refer to Demand distribution for details on configuring the water user node. Notice also that the Account Distribution table (in the node's feature editor) shows details of the resource assessment system.
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