Prepared by Northwest Hydraulic Consultants Ltd, The Lillooet River Flood Mitigation Program: Preliminary Sediment Management Plan says that sediment removal in the order of 210,000 to 260,000 cubic metres a year may be necessary over the next several decades.

It draws heavily from the Lillooet River Floodplain Mapping Report, which was released in December 2018 and found that peak discharge flows related to specific flood events are higher than previously understood and infrastructure does not offer as much protection as was previously thought.

The Meager landslide took place 66 kilometres upstream of Pemberton and caused some channel blockage of Meager Creek and the Lillooet River, but no major flood.