Object flow output (Water Overlay)

Icon	Key	Unit	Range	Description	Default value
	OBJECT_FLOW_OUTPUT	m3	-3.4028235E38 to 3.4028235E38	An array of values, each value indicating the amount of water which has flowed through this Building during each timeframe.	None

This attribute is automatically created for all relevant hydraulic structures in a project when a water calculation is performed. When the calculation is complete, the attribute is updated automatically.

For point-based buildings, a positive value means a net amount of water was added to the surface. A negative value means a net amount of water was removed from the surface.
For line-based buildings, positive or negative indicates the net direction the water has flowed.

All hydraulic structures have an OBJECT_FLOW_OUTPUT attribute. Also a breach area and a Sewer area have this attribute.

Notes

This attribute does not need to be created when configuring the project. This attribute is created automatically by the Water Overlay when a calculation is performed.
To prevent conflicts between multiple Water Overlays, the Overlay ID is appended to the attribute name by default.
Invalid water objects have an Object flow output attribute value of NO_DATA: (~ -3.4+e38) for easy exporting/debugging.
The value is stored per timeframe and represents the amount of water transported in m³ for the period of that timeframe. Therefore the total object flow during the entire simulation can be computed as the sum of the individual values per timeframe.