Use this dialog box to define a basin for stage storage analysis, by entering contour elevation and area data.
This dialog box enables you to enter data for contours that may not be available in digital format. If you have an Autodesk Civil 3D drawing with a surface or polylines, you may wish to use the Define Basin From Entities dialog box instead.
This dialog box is accessed from the Stage Storage dialog box.
Specifies the elevation for the contours that represent the basin elevations. You can enter the contours in any elevational order. When you click Add To Table, the data is sorted from lowest to highest elevations in the Stage Storage dialog box.
Specifies the area for the contour that exists at the specified elevation.
Adds the specified data to the table in the Stage Storage dialog box.