To maintain a geographic reference, the user must specify a coordinate system for each HEC-FIA project. To establish the grid size and coordinate system:
- From the Maps menu, click Default Map Properties.
The Default Map Properties for dialog box opens.
- The information in the Map Default Properties for dialog box includes:
Coordinate System: this box identifies the established coordinate system for a watershed. To edit the coordinate system, click View.
Extents – Easting Min, Max, Northing Min, and Max. These values indicate the location of the left, top, right, and bottom borders of the grid in the display area.
Grow to Map Extents. When this checkbox is selected, HEC-FIA automatically sets the geographic extents to define the smallest rectangle that encompasses all the objects in the workspace.