Volume tracking allows users to compare the volumes of water that would be required to meet a set of flow recommendations with the corresponding volumes of water associated with an imported time series. Only one imported time series can be selected for use in volume tracking per system and volume tracking can be used only for systems with a “Flow” system type. Flows are summed day-by-day and state-by-state for the period of record specified in the “Define/Edit State” interface (Figure 7). Total flows for the state-based recommendations are then divided by the corresponding total flows of the imported time series and multiplied by 100 to compute a percent volume for each state, which is then reported in the state legend (Figure 26). Missing values in the imported time series are treated as zeros.
Those percent volumes are computed based on the trace of each flow recommendation. Additional percent volumes based on the upper and lower bands of each flow recommendation are tabulated in the volume report accessed through the “Reports – Volume” menu option and as described in the “Reporting” section of this manual.
Volume tracking can be activated by selecting the “Project – Volume Tracking – Active” menu option. A time series can be designated for use in volume tracking through the “Project – Volume Tracking – Settings” menu option or by right clicking on that time series in the Data List and selecting the “Use for Volume Tracking” menu option. Time series designated for use are identified with an asterisk in the Data List.
Figure 26. Volume tracking for Unified System. Percent volumes are reported in the State Legend. “Flow-Nat” selected as imported time series to be used in computations.
