The Properties Tab contains information relevant to the model as a whole and is divided into two frames: Model Information and Flow Regimes (Figure 3).
Figure 3. The Properties Tab of HEC-EFM is used to document information about the project and to define the flow regimes to be analyzed. Two flow regimes (Natural and Gaged) are shown.
Model Information – Model information documents metadata (Title, Author, Location, and Description) about the project.
Flow Regimes – An HEC-EFM "flow regime" is defined as two concurrent daily time series that reflect conditions at a single location in the study area. Typically, a flow regime is composed of time series of daily mean flow and daily mean stage data. HEC-EFM accepts input data from several text formats (i.e., comma, space, and tab delimited), from HEC Data Storage System
(HEC-DSS), which is the database used by HEC models for storage of time series and other data, and from the Hierarchical Data Format (HDF), which is a database used by a few HEC models for storing two dimensional outputs. The start and end dates for flow regimes are controlled by the user, which can be a handy feature when analyzing only part of the period of record.