I'm working on a rainfall-runoff analysis of 7 years of observed 30 minute precipitation and streamflow time series data. I have delineated individual storms appropriately using time series algorithms in Excel, however, estimating the center of mass of precipitation and the base time of stream flow response for each storm is complicated.

I wanted to check with the community before I manually calculate those variables from around 700 events x 5 monitoring sites (~3,500 events) one-by-one.

Anyone know of a time series filter algorithm, or software to filter out those hydrograph analysis variables for thousands of storms at once?

I have sound estimates of interstorm duration, rainfall duration, rainfall total, time of rise, time of peak flow, flow at time of rise, and peak flow for each storm if that helps.