The Groundwater Storage Object models a simple fill-and-spill underground body of water. The Inflow to the object is provided either through user input or by a link from a slot on another object. Storage and Outflow are then calculated based on a mass balance performed on the object and the selected user methods.

For the object to solve successfully, you must input a value for Storage at the initial timestep of the run.

You must select a Groundwater Outflow method for this object; otherwise, a RiverWare error is posted during initialization.

User method categories are as follows.