The FlowDat database is a relational MySQL database containing over 1500 mass flows, including PDCs, debris avalanches, and lahars. Here, you can download a snap-shot, flat view of the larger relational database as an Excel spreadsheet. 

NOTE: Currently undergoing an update!

Citation:

Ogburn, S.E. 2012. FlowDat: Mass flow database v2.2. On Vhub at https://vhub.org/groups/massflowdatabase