StormCAD 2024 Help

Physical Characteristics of Ponds

There are categories of storage elements that can be modeled in StormCAD 2024:

  • Outdoor ponds with a free surface
  • Large underground pipes built solely to store water during storms
  • Wet wells at pumping stations

The first two are modeled as “ponds” in StormCAD 2024. Any of these elements may be used as the suction side of a pump.

The following pond volume options are available:

  • Depth vs. Area
  • Elevation vs. Area
  • Elevation vs. Volume
  • Underground Pipe Volume
  • Functional
  • Elliptical or Circular Cylinder
  • Elliptical Paraboloid
  • Rectangular Pyramid
  • Truncated Elliptical Cone

Not all of the physical properties are needed for each method of describing pond (storage element) dimensions.

The type of attribute needed for each type of data entry is summarized in the table below:

Required Pond Attributes

Attribute Elevation-Volume Curve Elevation-Area Curve Volume Function Pipe Volume Cylindrical Parabolic Pyramidal Conical
Volume Type Required Required Required Required Required Required Required Required
Elevation (Invert) Required Required Required Required Required Required
Depth (Maximum) Required Required Required Required Required Required Required
Major Axis Length Required Required Required Required
Minor Axis Length Required Required Required Required
Side Slope (Pond) Required Required
Elevation-Area Curve Required
Elevation-Volume Curve Required
Percent Void Space (%) Required Required
Number of Barrels Required
Length Required
Invert (Start) Required
Invert (Stop) Required
Pipe Diameter Required
Pond Coefficient A Required
Pond Exponent B Required
Pond Constant C Required
Height of Axis Surface Required

For more information on the physical characteristics of ponds, see the following help topics:

Outdoor Ponds
Elevation vs. Area
Elevation vs. Volume
Percent Void Space (%)
Pipe Volumes
Functional (Equation)
Parent topic: Ponds