Defines the flow statistics for a defined period of either a water year, calendar year, or period of record. Defines the type of period where: "WY" = the period from October 1st to September 30th, "CY" = the period from January 1st to December 31st, and "PR" = the period of record. The number of days of daily values used in the calculation. The sum of the daily mean values of discharge for the period. The arithmetic mean of the individual daily mean discharges for the period. The maximum instantaneous discharge that occured for the period. The date of the maximum instantaneous discharge that occured for the period. The minimum instantaneous discharge that occured for the period. The date of the minimum instantaneous discharge that occured for the period. The lowest mean discharge for 7 consecutive days during the period. The beginning date of the 7-day period for the value. Defines the depth, in inches, to which the drainage area would be covered if all of the runoff were uniformly distributed. Defines the volumn, in the acre-feet, of the runoff. Defines the volumn, in cubic feet per square mile of the runoff. The discharge that is exceeded by 10 percent of the flow for the period. The discharge that is exceeded by 50 percent of the flow for the period. The discharge that is exceeded by 90 percent of the flow for the period. The maximum instantaneous flow occurring for the period. The date of the minimum instantaneous discharge that occured for the period. The maximum instantaneous stage occurring for the period. The date of the maximum instantaneous stage that occured for the period. The minimum instantaneous flow occurring for the period. The date of the minimum instantaneous discharge that occured for the period.