Line-sinks are used to model streams and lakes.
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Strings of line-sinks along the center of a stream or along the boundary of a wide river or lake model the inflow or outflow of water. Line-sink strings may be designated as stream features in which case the GFLOW Solver will organize them into one or more stream networks. When specifying a conjunctive groundwater-surface water solution, stream flow is calculated in the network based on groundwater inflows and outflows. Optionally overland flow may be specified to account from seepage out of overlying formations. A right-click on any of the line-sinks will give access to all model data for that line-sink. In the figure, the last line-sink representing City Ditch south of Vincennes, IN is highlighted and the Linesink Information panel lists all relevant data for that line-sink. Note that Cumulative Discharge is for a line-sink string, while Stream flow is for the entire up-gradient stream network. In this example the difference is nearly negligible, since the up-gradient sections (line-sink strings) of City Ditch fell dry.