Stronger El Ninos directly correlate to the biggest snowstorms in Denver's history, or at least most of them. This is a tweet highlights the seasonal totals instead of individual events. 2002-2003 isn't even on here, but that weak-moderate El Nino winter had an epic storm here-- the cutoff low pulled in southern stream moisture and it's highly related to El Nino. Now, as for the whole, northwest Colorado does less well with El Nino, southern Colorado does better with El Nino. So for the state in general, we are at sort of a dividing line with temps/precip.