Not sure if @RodneyS had noticed this, but for DCA, the 10.3" recorded from 1/12-14 this year would make #7 on the list of top 3-day snowfalls, per their criteria (i.e. snowfall must have occurred on all three days). This would be on the second chart, not the first one that lists top snowfalls overall.
https://www.weather.gov/lwx/winter_storm-pr#TopDaySnowfall