Triggers are used to initiate or cancel certain actions for an account, account host, account type or system in a resource assessment system. This page provides details of the different types of triggers available in Resource Assessment systems, along with types of actions that can be initiated.
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| Condition | Description |
|---|---|
| End of water year | Triggers an action at the end of the water year. |
| Function | Triggers an action using a defined function. The format of a function should be as follows: if( A > B,1,0), where “1” indicates the action will occur and “0” means the action will not happen. |
| Monthly trigger | Tiggers an action for a particular month. You must specify whether to offset from the start or end of the month, along with the number of days. |
| Per-timestep | Triggers an action per a specified number of time-steps. You can choose to reset the repeat interval at the start of each water year. |
| Season | Triggers an action for a specified season. You must define and start and end dates. |
| Specified date | Triggers an action on a specified date. |
| Start of water year | Triggers an action at the start of the water year. You can choose to repeat the action at a specified number of timesteps, and whether to reset the repeat interval at the start of each water year. |
| Storage level | Trigger based on a specified storage level. You must specify the storage, the level and whether the level is rising or falling. |
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| Parameter | |
|---|---|
| Account Balance | The remaining volume/proportion of water available to an account (not including carryover). |
Carryover | The remaining volume/proportion of water available to an account that was carried over from the previous water year, ie. carryover balance. |
| Carryover Start of Water Year | At the start of the water year, the volume of water carried over from the previous water year. |
| Entitlement | Annual volumetric entitlement for an account. |
| Total Water | Account Balance + Carryover Balance. |
Available Water in Account Balance, or Available Account Balance | For Annual Accounting systems with access to spillable water*: Max(0, Account Balance - Minimum Balance) For Annual Accounting systems without access to spillable water: Max(0, Account Balance - Max(0, Spillable Water - Carryover Balance) - Minimum Balance) For all other resource assessment systems, this parameter is equivalent to Account Balance. |
| Available Carryover | For Annual Accounting systems without access to spillable water*: Max (0, Carryover Balance - Spillable water) For Annual Accounting systems with access to spillable water and for all other resource assessment systems, this parameter is equivalent to Carryover. |
| Available Water | For Annual Accounting systems with access to spillable water*: Max(0, Account Balance + Carryover Balance - Minimum Balance) For Annual Accounting systems without access to spillable water*: Max(0, Account Balance + Carryover Balance - Spillable Water - Minimum Balance) For all other resource assessment systems, this parameter is equivalent to Total Water. |
| Order / Use Debit | Water debited from an account . ???that time step |
| Total Usage Water Year | Water debited from an account since the start of the water year. |
*Access to spillable water is set at the Account Type level on the Carryover tab by enabling Water Available While Spillable, see Annual Accounting - Account Type - Carryover..
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A specified proportion or a certain amount of water can be carried over from an account type, account host or account to another account type, account host or account within the same or another accounting system (Figure AA, Figure 4). This is in addition to the water in the carryover account balance, which is automatically carried over.
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Figure 4. Carryover trigger
Mapping
For Carryover, Transfer and Transfer Use you can choose between Independent or One-to-One Mapping. This affects how the Source and Destination accounts, account hosts or account types are selected.
In Figure X...AA, a carryover trigger has been configured with independent mapping.
In Figure Y...4, a carryover trigger has been configured with
Transfer
Transfers a specified proportion or volume of account balance, available water or carryover between different account types, account hosts or accounts. For a positive transfer, water moves from source to destination; in a negative transfer, it moves in the reverse direction. For transfer from available water, the operation is similar of an adjustment trigger (uses the Priority set at the water user).
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Figure 5. Per unit share allocation trigger
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Re-assessment
This trigger is only available at the accounting system level. It reassesses the available resources based on the specified time-step. After available resources reassessment, the system will assign new allocation to water user based on this new re-assessed available resources.
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