An outfall is a component that can be the last node of the drainage system of a subcatchment.

Parameter Name Description Default Value
NHYD Hydrograph number.
NAME Name of the component.
COMMENT 1, 2, and 3 Comment for the command.
Tag Optional category or classification.
System Type Specifies the junction’s system type, whether it belongs in the overland, storm, or sanitary system. Blank
X The X coordinate of the outfall. 0
Y The Y coordinate of the outfall. 0
Ground Elevation The elevation for the ground level. 0
#Of inlets The number of inlets (catchbasin) assigned to the outfall. 0
Sag If the junction is laid upon a sag area.
Delineate Whether to delineate this junction or not.
Invert El. (m) Elevation of outfall’s invert. 0
Inflows External inflows received at the junction. No
Treatment Pollutant removal supplied at the junction.
Tide Gate Select Yes if the outfall contains a tide gate to prevent backflow. No
Type Type of outfall boundary condition. *Free

*Outfall types are: