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Internally, Source partitions the link into ndiv divisions (where ndiv is the lag measured in number of model timesteps). Water moves progressively through the link, one division at a time, without attenuation and ignoring any loss and gain fluxes and any dead storage, as follows:
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Storage Routing links model the storage and movement of water through a length of river using a hydrologic routing method. Storage Routing links They can model represent the travel time of water through a reach, the attenuation of flow rates that can occur due to channel shape and roughness and reach processes (such as lateral fluxes). Reach processes include such things as . Examples of lateral fluxes include net evaporation from the water surface and exchanges between groundwater and surface water.
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Storage Routing links can be configured to represent lagged flow without attenuation (equivalent to a Lagged Flow link) but with the capacity to include lateral fluxes. See the /wiki/spaces/SD550/pages/521929601 Links user guide for how to configure the Storage Routing link to achieve this, and the Storage Routing Link SRG for information on the solution procedure.