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Modeling a waterbody requires the estimation of the mass balance of all the constituents that enter and exit the modeling domain. Mass balance is an essential aspect of weight-of-evidence based model calibration. Once you develop a model EE can be used to quickly estimate the mass balance. The Boundary Mass Loading can be selected from the Tool menu as shown in Figure 1.
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Figure 1. Boundary Mass Loading.
Once the option is selected, the Mass Loading the form will appear as shown in Figure 2. From this form, the user selects a constituent from the drop-down list and then clicks on the Compute button.
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Figure 2. Flow Boundary Mass Loading Form: Water.
The unit for some constituents such as sediment, salinity, and toxics can be selected from the drop-down list of the Unit Options , as shown in Figure 3. After clicking on the Compute button, a mass loading report will be shown as Figure 4.
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Figure 3. Flow Boundary Mass Loading Form: Sediment.
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Figure 4. Flow Boundary Mass Loading: Report.