2.0

Chapter 2 Working with Ponds
106
To apply slope to a pond by specifying the required pond volume and the pond
slope
1 Draw a pond perimeter and calculate the required storage volume for the pond.
2 From the Grading menu, choose Pond Slopes ä By Volume.
The following prompt is displayed:
Select polyline:
3 Select the pond perimeter from your drawing.
The Pond Name dialog box is displayed. If the pond is named (defined), then
the pond name appears in the Pond Name box. If the pond is not named, then
the name field is blank. Type a name for the pond.
4 Click OK.
NOTE
If you selected an existing pond that has already been shaped, then a
message is displayed asking if you want to overwrite the existing pond rim
information. You must click Yes to continue the command.
Next, you are prompted to select an offset side.
5 Pick a point inside or outside the pond.
The following prompt is displayed:
Volume <0.0000 ft3>:
6 Type a volume for the pond.
The following prompt is displayed:
Slope-Grade/Slope/<1:1>:
7 Do one of the following to define the slope:
n
Type G for Grade and enter a grade value (e.g., 5.00%).
n
Type S for Slope and enter a ratio (e.g., 20:1).
After you define the slope, the depth tolerance is calculated and displayed as
follows:
Depth tolerance <0.0833 m>:
The depth tolerance is the accuracy that is used for calculating the bottom
contour elevation. The lower the depth tolerance, the closer the calculation of
the final volume will be to the entered volume.
8 Accept the default Depth tolerance value or type a new value.
The final bottom elevation is displayed at the command line, and the following
prompt is displayed:
Shape pond - All? <Yes>/No:
9 Type Yes to import the contours, bottom polyline, and slope control lines
automatically, or type No to end the command.
If you choose to shape the pond, then the following prompt is displayed:
Close contour lines? Yes/No: <Yes>:
10 Type Yes to create closed contour lines, or type No to draw contours that skip
the last segment of the perimeter.