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The four types of flow rules presented in the EDM have been designed to capture the most commonly defined environmental flow requirements specified in environmental flow studies and water regulations. These four types of environmental demand rules allow users to construct a collective environmental water requirement by using combinations of environmental demand rules. The four rule types are:
- Minimum - specifies a minimum flow, usually applied to maintain minimum habitat requirements;
- High Flow/Flood Flood/Fresh - specifies a flood fresh, usually associated with a recruitment event such as to trigger fish movement, water floodplain vegetation;
- Flow pattern - specifies a pattern of flow, used to define multi-peak events;
- Minimum - specifies a minimum flow, usually applied to maintain minimum habitat requirements; and
- Translucency - specifies the flow requirements in terms of some other time series, usually the release from a dam based on the inflow of the dam; andPattern - specifies a pattern of flow, used to define multi-peak events.
These rules are configured in the environmental demand node's feature editor. For details on what to configure for each of these rules, refer to Environmental Demand node.