follow load : logical or NULL
use heuristic : logical or NULL
use water : logical or NULL
hard bounds : logical or NULL
use leeway : logical or NULL
power to level : logical or NULL
reservoir : logical or NULL
inter-daily-breakdown : numeric, integer or NULL
intra-daily-modulation : numeric, integer or NULL
inter-monthly-breakdown : numeric, integer or NULL
leeway low : numeric, integer or NULL
leeway up : numeric, integer or NULL
pumping efficiency : numeric, integer or NULL
initialize reservoir date : numeric, integer or NULL
reservoir capacity : numeric, integer or NULL