Menu:  Edit Global Variables
 
Values entered in this screen apply to all segments.

TITLE is used for labeling output.

NOTES are for user reference

AVERAGING PERIOD = duration of mass-balance calculations (as a fraction of one year) = period used in specifying tributary inflows (e.g., 1= annual, .5 = April-September, .42= May-September).  A value >0 must be specified.  The appropriate averaging period for mass balances depends upon water & nutrient residence times in the reservoir (see discussion). Tributary flow rates should be consistent with the specified averaing period.

PRECIPITATION & EVAPORATION are total values (meters) over the averaging period.

STORAGE INCREASE = increase in pool elevation between start and end of Averaging Period.  This value is used only for completeness in the water & nutrient budgets.  It does not influence predicted nutrient concentrations.