Download 3. Watershed delineation using BASINS 4.0

4. Click on the Select button within the Air Chemistry File box (Fig. 5.19).
Choose the sample.air file and click Open. This links this file to this
catchment.
5. In the lower left corner, check the box for “Apply Changes to Selected”. Note
that you could have also skipped selecting all and just checked the box for
“Apply Changes to All”. Also check the box “Write Output to File” if you want
to see the flow and chemistry output for all these catchments (Fig. 5.20). This
increases the output file size, but allows for better understanding during
calibration.
Fig. 5.20 Loading the sample meteorology and air chemistry files.
6. Click OK. This links the met and air files to all the catchments in this
watershed. You could have also selected just a few catchments by clicking on
them while holding the Shift key and then opening one of the selected
catchment still holding the Shift key. To verify that you linked these files to a
different catchment, click on other catchments and review the Meteorology
tab.
7. To view the sample air and met data, select Module > Data. Then in the “Type
of data” box, select the Meteorology files from the menu (Fig. 5.21).
Fig. 5.21 Selecting the meteorology file for viewing the data.
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