e Minimum Flow Requirement node is used to ensure that there is a minimum flow rate at a point in a river system to meet various demands (stock, domestic or environmental needs). It is also used to generate transfers between an upstream and downstream storage. This node imposes a constraint which must be met at that point in the river model, even if additional water must be released from a storage. The requirement can be specified as:
- A single value;
- A time series using Data Sources;
- Via a function using the Function Editor;
- As monthly values in megalitres under Monthly Pattern; or
- Setting up a rule using Rule Curves (this is described in further detail below).
Figure 1. Minimum flow requirement node
You can enter the monthly pattern manually or load the data from a file.shows the format of a comma-separated (*.csv) file for importing monthly pattern data.