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Boundary Flow

Overview:

Boundary Flows are boundary conditions at nodes where flow is known. This view defines these time series and assigns time series data to them.

Tables:

Example

# Description:
# Historical boundary flows to Delta
BOUNDARY_FLOW
NAME      NODE SIGN FILLIN   FILE          PATH                                                     
calaveras   21    1   last   ${BNDRYINPUT} /FILL+CHAN/RCAL009/FLOW//1DAY/${HISTFLOWVERSION}/         
cosumnes   446    1   last   ${BNDRYINPUT} /FILL+CHAN/RCSM075/FLOW//1DAY/${HISTFLOWVERSION}/         
moke       447    1   last   ${BNDRYINPUT} /FILL+CHAN/RMKL070/FLOW//1DAY/${HISTFLOWVERSION}/         
north_bay  273   -1   last   ${BNDRYINPUT} /FILL+CHAN/SLBAR002/FLOW-EXPORT//1DAY/${HISTFLOWVERSION}/ 
sac        330    1   last   ${BNDRYINPUT} /FILL+CHAN/RSAC155/FLOW//1DAY/${HISTFLOWVERSION}/         
vernalis    17    1   last   ${BNDRYINPUT} /FILL+CHAN/RSAN112/FLOW//1DAY/${HISTFLOWVERSION}/         
yolo       316    1   last   ${BNDRYINPUT} /FILL+CHAN/BYOLO040/FLOW//1DAY/${HISTFLOWVERSION}/        
END

BOUNDARY_FLOW

The Boundary Flow table defines flow boundary conditions by giving them names and associating them with a node. The table also assigns a time series to the boundary condition. Boundary Flow is a top-level layered table.

Field Descriptions

NAME

Name assigned to the source. This is the identifier of the boundary and is referred to elsewhere in the input system. If you assign water quality you will use the same name in order to match concentration to flow.

NODE

Node number at which the source is applied.

SIGN

Forces the time series to be a source or a sink. Positive values are normally associated with a source, but the data (especially sinks such as agricultural diversions) are sometimes measured in absolute flow. Use 1 to force the value to be a positive source or -1 to interpret values as a sink.

FILLIN

Method for filling in data if the time step of the assigned series is coarser than the time step of the model. See fillin types

FILE

DSS or text file in which data are stored. Use consistent case when referring to the same file. You may also enter the word constant if you would like to assign a constant value to the input (the value will be entered in the next column).

PATH

The path within the text or DSS file of the time series data. If you used the constant keyword in the Input File column, enter the value (e.g. 4.22) here.

Table Info

Identifier:

NAME

Include Block:

HYDRO_TIME_SERIES

  • Multiple sources and sinks can be assigned to a node. They are usually kept separate in order to assign different concentrations to them.
  • HYDRO is able to accept sources and sinks at boundary nodes, but this is not good modeling practice. Use them on the interior.