the type of reservoir, "storage" and "hydropower". hydropower is not available in this version
name
a string representing the name of reservoir object
reservoirCode
an unique integer code
downstreamReservoirCode
the code of reservoir downstream
geometry
a list, include maximum and minimum volumes of reservoir and a data frame for volume-area rating curve whose first column includes area (square KM) and the second column is Volume (MCM)