Infinitii I&I: Auto I&I Storm Events

Infinitii Auto I&I provides tools for detailed analysis of particular storm events, letting you see how the storm event proceeded over time, and how this relates to your RDII flow during the storm event.

Viewing Storm Events

To view a specific storm event, you must first access the Infinitii Auto I&I Envelope for the affected site. On the graph, click the View Storm Events button.


The storm events are numbered, matching the numbering in the Auto I&I Envelope graph, and are also identified by their start and end date and time. Select the storm event you want to investigate from the list, and it will be shown in a detailed RDII chart.


Storm Event RDII Chart Details

The graph has several sections that provide different details about how the storm event and the related RDII data of your site's collection system change over time.


The Storm Event RDII chart has the following section:

  1. Identifying Information: The chart title shows the storm event number, and the start and end date and time.
  2. Legend: The legend indicates visually what the RDII chart is measuring, including the colors of the rainfall bar chart and the lines for the Final Raw Flow, Dry Weather Flow, and 1 Hour Average RDII Flow.
  3. Rainfall Bar Chart (blue bars): The top section of the chart proper shows the weighted rainfall, using an hourly bar chart, with the time on the x-axis matching the lower part of the chart. This provides a way to visually correlate the amount of rainfall with the flow in the collection system.
  4. Flow Lines Chart: The bottom section of the chart shows three separate lines representing flow in the collection system. There is also a specific point identified representing maximum RDII flow during the storm event.
    • Final Raw Flow (red line): This line is a measurement of the total flow through the collection system over the duration of the storm event. It is granular, demonstrating the rapid changes in total flow measured by the sensors in the collection system. The Final Raw Flow volume represents the sum of the other two lines, in that its volume the Dry Weather flow combined with the RDII flow.
    • Dry Weather Flow (yellow line): This line is the dry weather flow based on the DWP created automatically by the Infinitii I&I system. It represents the expected flow through the system based on standard collection system usage when a storm event is not present.
    • 1 Hour Average RDII Flow (black line): This line represents the hourly average of the RDII flow into the site's collection system. It always strongly correlated with the rainfall bar chart, as it is the rainfall that becomes the RDII flow. In addition, there is a black circle indicating the point of maximum RDII flow during the storm event.

Taken together, the data in a Storm Event RDII Chart lets you identify the precise periods of maximum rainfall and RDII flow during a storm event. Overall, the RDII chart of any storm event will have similar patterns. The Final Raw Flow line will match closely with the Dry Weather Flow line until the storm event shows significant rainfall, after which the Final Raw Flow line will rise, matching the addition of the flow volume represented by the 1 Hour Average RDII Flow line.


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