Time series data of mean calendar day whisker plot versus water year from 2000 to 2020

Time series of mean calendar day (standard error represented by whiskers) when gages recorded the peak springtime discharge (red) and when snowpack melted to half its maximum recorded Snow Water Equivalent (half SWE; light blue). The considerable variability between timing of snowmelt and spring discharge suggests the timing of snowmelt may not be the primary determinant of when peak discharge occurs.