A volume frequency analysis can be started in two ways within the software, either by right clicking on the Volume Frequency Analysis folder in the study explorer and selecting New, or by going to the Analysis menu and selecting New and then Volume-Frequency Analysis. When a new Volume Frequency Analysis is selected, the user is required to first enter a Name for the analysis, enter an optional Description, and select a data set from the available data sets stored in the current study DSS file (see Using the HEC-SSP Data Importer for importing data into the study). The Volume Frequency Analysis editor will not allow further edits by the user until the name is defined and the data set is selected. The list of data that can be selected for a Volume Frequency Analysis will only include those data that have a regular interval, like 1HOUR and 1DAY (E-part pathname). Once a Name is entered and a data set is selected, the DSS File Name and Report File will automatically be entered. The DSS filename is by default a DSS file with the same name as the analysis. The report file is given the same name as the analysis with the extension ".rpt". The Volume Frequency Analysis editor is shown in the figure below.

Volume Frequency Analysis Editor.