We're all familiar with "the tail that wags the dog,"
But did you know a similar phrase also applies to south Florida hydrology, too?
It's called the tail that wags the water cycle.
As you can see from the frequency distribution graph above, the tail are our Big Rain Days (BRDs). Big Rain Days are from a time-wise perspective only a very minuscule portion of our total water year -- for instance this year we've had only four -- but their impact on the hydrograph can be quite pronounced for weeks and months to come.
They can also be conspicuous by their absence, too:
A term that pops up if for too long they they go missing is called drought.
South Florida's hydrograph both rises and falls by the presence and absence of the tail.