Average:
The arithmetic mean. The sum of the values divided by the number of values.
Categories:
Much above Average = Greater than 130%
Above Average = 111 - 130%
Near Average = 90 - 110%
Below Average = 70 - 89%
Much below Average = Less than 70%
Forecast Period:
The period from April 1 to July 31.
Most Probable Forecast:
Given the current hydrometeorological conditions to date, this is the best estimate of what the runoff
volume will be this season.
Reasonable Maximum Forecast:
Given the current hydrometeorological conditions, the seasonal runoff that has a ten percent (10%)
chance of being exceeded.
Reasonable Minimum Forecast:
Given the current hydrometeorological conditions, the seasonal runoff that has a ninety percent (90%)
chance of being exceeded.
Water Year:
The period from October 1 through September 30.