This flow calculator is independent of the other functions of NetSTORM, but is included in the same package due to its usefulness in performing hydraulic calculations for collection systems and water/wastewater treatment plants. Output is presented in tabular form, but may be easily graphed by clicking the "Export to Excel" button and graphing the data in Excel.

The GVF calculator can compute head losses for gradually varied flow in a channel such as a manifold or collector pipe. Specify a non-zero lateral inflow to use this option.

Note that the GVF calculator may be left open after the main NetSTORM program is closed.