Loss from System (%) and Loss to Groundwater (%) refer to the evaporative and leakage losses as water is carried by canals and/or conduits to demand sites and catchments. These loss rates are specified as a percentage of the flow passing through the link. Loss from System indicates water that disappears from WEAP's accounts, whereas Loss to Groundwater will flow into the groundwater node specified. You may include fractions for both, if, for example, there are both evaporative losses (Loss from System) as well as leakage losses that go to a groundwater node (Loss to Groundwater). NB: Do not include losses that are already accounted for as demand site losses.
Entered on: Data View, Branch: Supply and Resources \ Transmission Links, Category: Losses, Tabs: Loss from System, Loss to Groundwater