Technical information

Working with Ponds | 137
There are six groups of commands on the Grading menu that you can use to
define ponds and shape them:
■ Pond Settings: Changes settings for contours, slope control lines, and
benches.
■ Pond Perimeter: Draws a pond perimeter, changes its elevation, adds
vertices to the perimeter, fillets the perimeter, and saves and imports
perimeter shapes.
■ Define Pond: Names or renames a pond, defines pond geometry by select-
ing existing polylines or contours, or deletes a pond from the drawing.
■ Pond Slopes: Grades the bank of the pond.
■ Shape Pond: Shapes the pond, by creating the contours, slope control
lines, and the bottom polyline, after you have created the pond slope
design.
■ List/Label Pond: Lists information about ponds and labels them in the
drawing.
To design a detention pond
Steps Use to locate
1 Determine the specific watershed characteristics and
design criteria, including the peak flow rate volume.
2 Draw the pond perimeter polyline. Drawing a Pond Perimeter
3 From the Grading menu, choose Define Pond
➤ By
Polyline to define the pond perimeter polyline.
Defining a Pond Perimeter
from a Polyline